A strong motorcycle helmet lock gives you a practical way to deter casual theft while your helmet is off, and the right choice depends on how you want to secure it. The Urban UR140 leads this group with a four-digit combination carabiner, steel cable, and T-bar adapter in one kit. Other options range from handlebar-mounted locks to retractable cable designs and keyed cable pairs, so there is no single format that suits every rider.
Check what the lock attaches to, whether its cable or adapter suits your helmet, and whether the listed mounting dimensions match your motorcycle. These products are deterrents, not guarantees against theft; choose a format that lets you secure the helmet conveniently without assuming that any listed construction is theft-proof.
The Urban UR140 Combination Lock is the best overall choice in this group because its kit includes a four-digit carabiner lock, a steel security cable, and a T-bar helmet adapter. That combination gives riders more than one way to attach a helmet without carrying keys. For a fixed handlebar installation, the Kewig Aluminum Helmet Lock is a more targeted alternative, with support for 0.875-, 1-, and 1.125-inch round handlebars.
For a portable cable, consider the MEETLOCKS Retractable Helmet Lock, whose cable stretches up to 1000mm.
Our Top Picks

Its kit combines a four-digit carabiner, steel cable, and T-bar adapter, giving riders three listed locking components without requiring a key.
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Best Handlebar FitThis dedicated motorcycle helmet lock fits listed 0.875-, 1-, and 1.125-inch round handlebars and includes two replaceable rubber inserts.
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Best Keyed MountThe aluminum lock is supplied with two keys, and the package can include a cable, making it a direct-use option for motorcycle helmets.
View on Amazon- Longest Listed Cable MEETLOCKS Retractable Helmet Lock
Compare Motorcycle Helmet Locks by Type and Use
| # | Product | Material | dimensions | Weight | Buy |
|---|---|---|---|---|---|
| 1 | 1. Urban UR140 Combination LockBest Overall | Alloy Steel, Rubber | 4.33 x 2.76 x 0.79 in | 0.22 kg | View on Amazon |
| 2 | 2. Kewig Aluminum Helmet LockBest Handlebar Fit | — | — | 6.1 oz | View on Amazon |
| 3 | 3. KVAEY Motorcycle Helmet LockBest Keyed Mount | Aluminum | 2.16 x 0.94 x 2.51 in | 0.13 kg | View on Amazon |
| 4 | 4. MEETLOCKS Retractable Helmet LockLongest Listed Cable | Alloy Steel, Polyvinyl Chloride, Zinc | 5 x 3.5 x 0.5 in | 7.04 oz | View on Amazon |
| 5 | 5. SKYJDM Grip Lock ComboGrip-lock and helmet-lock combo | Aluminum | 8.23 x 3.74 x 1.73 in | — | View on Amazon |
| 6 | 6. TOKCKYBL Motorcycle Lock ComboCombined bike and helmet security | CNC Auminum Alloy | 5.9 x 4.8 x 1.4 in | 0.55 kg | View on Amazon |
| 7 | 7. TOKCKYBL Upgrade Lock ComboCombined lock for larger bars | Aluminium Alloy | — | 1.28 lb | View on Amazon |
| 8 | 8. ROCKBROS T512-T609 LocksTwo lightweight cable locks | Zinc Alloy, Wirerope, PVC Coating | — | 124 g | View on Amazon |
| 9 | 9. ROCKBROS Retractable Cable LocksRetractable cable for quick stops | Zinc Alloy, Wirerope, PVC Coating | — | — | View on Amazon |
| 10 | 10. Master Lock 99KA Cable LocksTwo keyed cable locks | Plastic | 4 x 6 x 2 in | — | View on Amazon |
Detailed Reviews: Best Helmet Locks For Motorcycles

#1 · Best Overall
1. Urban UR140 Combination Lock
- Material: Alloy Steel, Rubber
- dimensions: 4.33 x 2.76 x 0.79 in
- Weight: 0.22 kg
Best for: Keyless cable-and-adapter kit.
Why it ranks #1: Its kit combines a four-digit carabiner, steel cable, and T-bar adapter, giving riders three listed locking components without requiring a key.
A three-part locking kit combines a four-digit carabiner, flexible steel cable, and T-bar helmet adapter, giving riders several ways to secure a helmet without carrying a key. The rubber-protected carabiner helps prevent scratches, while the compact kit is intended to travel with the bike.
Use the T-bar extension for a helmet connection, or route the included steel cable when a different attachment point is more practical. The carabiner’s customizable four-digit combination avoids key handling, and its rubber protection helps reduce scuffs on contact. The maker lists placements including a handlebar, grip, or handle, so riders can choose an available point. The kit weighs 0.22 kg and measures 4.33 x 2.76 x 0.79 inches for carrying between rides.
- Includes a carabiner lock, steel cable, and T-bar extension
- Four-digit combination is keyless and customizable
- Rubber carabiner protection helps prevent scratches
- Compact dimensions and 0.22 kg listed weight
- Combination setup requires aligning the code with the guide arrows and resetting it correctly.
Skip it if you want a single rigid handlebar-mounted lock; Kewig CKB-4 lists a clamp for round bars and included installation wrench.
Choose the UR140 if you want a portable, keyless helmet setup with both cable and T-bar options for motorcycle or bicycle use. Its combination mechanism and choice of attachment points suit varied parking stops, but require setting and remembering a code.
Full product details
| Brand | urban |
|---|---|
| Color | Black |
| Included Components | T Bar Extension, Carabiner Lock, Steel Cable |
| Item Dimensions | 4.33 x 2.76 x 0.79 inches |
| Item Weight | 0.22 kg |
| Dimensions | 4.33 x 2.76 x 0.79 inches |
| Manufacturer | Artago Secure |
| Part Number | UR140 |
| Material | Alloy Steel, Rubber |
| Model | UR140 |
| Model Number | UR140 |
| Recommended Uses | ['Security'] |
| Special Feature | Anti-theft,Compact,Heavy Duty |
| Style Name | Highest Security Helmet Lock |

#2 · Best Handlebar Fit
2. Kewig Aluminum Helmet Lock
- Weight: 6.1 oz
Best for: Handlebar-mounted combination lock.
Why it ranks #2: This dedicated motorcycle helmet lock fits listed 0.875-, 1-, and 1.125-inch round handlebars and includes two replaceable rubber inserts.
A CNC-machined 6061 aluminum body clamps to round handlebars, making the Kewig a fixed-location helmet lock rather than a loose cable accessory. Its customizable three-digit combination avoids keys, while included TPU inserts accommodate listed 22 mm and 25 mm bars.
The clamp supports 0.875-, 1-, and 1.125-inch round handlebars, and the two replaceable TPU inserts adapt the fit to 22 mm and 25 mm bars. An included Allen wrench supports installation without a separate tool purchase. The hard-anodized aluminum finish is described as corrosion-resistant, and the zinc-alloy cylinder uses a double anti-theft structure. Once installed, the three-digit combination provides keyless access at the chosen parking position.
- 6061 aluminum body with hard-anodized finish
- Fits listed 0.875-, 1-, and 1.125-inch round bars
- Two replaceable TPU inserts included
- Allen wrench included for installation
- Requires a compatible round handlebar and installation rather than offering a portable cable-only setup.
Skip it if you need a cable that attaches at varied points; MEETLOCKS MTP0001 has a telescopic cable extending up to 1000 mm.
The Kewig is a fit for riders who want a permanently positioned, keyless helmet lock on a supported round handlebar. Check that the bar diameter matches its listed range and expect to install the clamp before relying on it.
Full product details
| Brand | Kewig |
|---|---|
| Item Weight | 6.1 ounces |
| Item model number | CKB-4 |
| Manufacturer | Kewig |
| Part Number | CKB-4 |
| Model | Motorcycle Helmet Lock |
| Package Dimensions | 4.84 x 3.62 x 1.73 inches |
Listed on Amazon as: Kewig Aluminum Alloy Anti-Theft Motorcycle Bike Helmet Lock
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#3 · Best Keyed Mount
3. KVAEY Motorcycle Helmet Lock
- Material: Aluminum
- dimensions: 2.16 x 0.94 x 2.51 in
- Weight: 0.13 kg
Best for: Compact keyed alloy helmet lock.
Why it ranks #3: The aluminum lock is supplied with two keys, and the package can include a cable, making it a direct-use option for motorcycle helmets.
A reinforced aluminum-alloy body gives the KVAEY a small, solid lock for riders who prefer a keyed mechanism over a combination. It includes two keys and a cable, and its stated uses extend beyond helmets to handbags, umbrellas, and other items that do not fit in a trunk.
At 2.16 x 0.94 x 2.51 inches and 0.13 kg, the lock is compact enough to carry for routine stops. Its aluminum construction supplies the listed sturdy build, while the included two keys offer a straightforward keyed workflow. The product also includes a cable, providing another attachment option, and its multipurpose description covers hanging small belongings such as handbags or umbrellas when helmet storage is not the only concern.
- Reinforced aluminum-alloy construction
- Includes two keys and a cable
- Compact 2.16 x 0.94 x 2.51-inch dimensions
- Can also secure or hang handbags and umbrellas
- Uses keys rather than a keyless combination.
Skip it if you want a keyless four-digit setup; Urban UR140 combines a code-operated carabiner with a cable and T-bar adapter.
The KVAEY suits riders who want a compact keyed lock with a cable and occasional use for small belongings. Its dimensions make carrying manageable, but choose it only if keeping track of keys fits your parking routine.
Full product details
| Brand | KVAEY |
|---|---|
| Color | Helmet Lock |
| Included Components | 1 Lock with 2 Keys/ 1 Lock with 2 Keys, 1 Cable |
| Item Dimensions | 2.16 x 0.94 x 2.51 inches |
| Item Weight | 0.13 kg |
| Dimensions | 2.16 x 0.94 x 2.51 inches |
| Manufacturer | KVAEY |
| Part Number | KVAEY-3290MH |
| Material | Aluminum |
| Model | Motorcycle Helmet Lock |
| Model Number | Motorcycle Helmet Lock |
| Recommended Uses | Vehicles, Outdoor Equipment |
| Special Feature | Waterproof, Sturdy, Versatile |
| Style Name | Modern |
Listed on Amazon as: KVAEY Motorcycle Helmet Lock, Aluminum Alloy Anti Theft Helmet Security Locks, Universal Tamper-Proof Helmet Locks for Motorbike Scooter Bike, Motorcycle Accessories (1Helmet Lock)
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#4 · Longest Listed Cable
4. MEETLOCKS Retractable Helmet Lock
- Material: Alloy Steel, Polyvinyl Chloride, Zinc
- dimensions: 5 x 3.5 x 0.5 in
- Weight: 7.04 oz
Best for: Long-reach retractable cable.
Why it ranks #4: Its resettable four-digit lock has a PVC-wrapped cable that stretches up to 1000mm, offering more reach than the listed 14-inch cable.
A telescopic cable extending up to 1000 mm gives the MEETLOCKS combination lock extra reach for looping a helmet around a suitable attachment point. The resettable four-digit mechanism is keyless, and the PVC-wrapped cable helps prevent scratches to a helmet or vehicle body.
The long cable can reach around a helmet and a more distant anchor than a short loop, while retracting to a compact form for carrying. A resettable four-digit combination avoids key handling and offers 10,000 combinations according to the product information. Its zinc-alloy hook and PVC cable covering support repeated contact without scratching, and the 144 g listed weight keeps the lock suitable for a pocket or backpack.
- Cable stretches up to 1000 mm
- Resettable four-digit combination is keyless
- PVC covering helps prevent scratches
- 144 g weight for pocket or backpack carry
- The flexible cable is a deterrent rather than a rigid lock.
Skip it if you prefer a fixed helmet lock attached to a handlebar; Kewig CKB-4 clamps to supported round bars and includes installation hardware.
The MEETLOCKS is suited to riders who need cable reach and compact carrying for a helmet or other portable gear. Its resettable code streamlines keyless use, while the flexible cable remains a deterrent rather than rigid security.
Full product details
| Brand | MEETLOCKS |
|---|---|
| Item Dimensions | 5 x 3.5 x 0.5 inches |
| Item Weight | 7.04 ounces |
| Dimensions | 5 x 3.5 x 0.5 inches |
| Manufacturer | MEETLOCKS |
| Part Number | MTP0001-01 |
| Material | Alloy Steel, Polyvinyl Chloride, Zinc |
| Model | MTP0001 |
| Model Number | MTP0001-01 |
| Recommended Uses | securing motorcycle helmets |
| Special Feature | Resettable |
| Style Name | Modern |
Listed on Amazon as: MEETLOCKS Motorcycle Helmet Lock Resettable Combination with Cableloop
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#5
5. SKYJDM Grip Lock Combo
- Material: Aluminum
- dimensions: 8.23 x 3.74 x 1.73 in
Best for: Grip-lock and helmet-lock combo.
Why it ranks #5: This combo pairs a motorcycle grip lock with a helmet lock and stainless-steel cable, suiting riders who want both functions in one product.
SKYJDM combines a motorcycle grip lock with a helmet lock, letting riders secure the bike and attach the helmet without carrying it around. The grip lock uses CNC aluminum alloy with an anti-oxidation surface, while the helmet cable is stainless steel and described as rust-proof.
The grip-lock function addresses the motorcycle, while the included helmet cable gives riders a way to secure their helmet as part of the same setup. CNC aluminum alloy and an anti-oxidation surface are specified for the grip lock, and the stainless-steel cable is described as rust-proof. This combination can reduce the need to carry a helmet during a stop, though the listing does not provide a handlebar diameter range.
- Combines grip lock and helmet lock functions
- CNC aluminum-alloy grip lock
- Anti-oxidation surface
- Stainless-steel helmet cable described as rust-proof
- No handlebar diameter range is provided in the supplied specifications.
Skip it if you need a stated handlebar-diameter range before choosing a combined lock; TOKCKYBL TKB-MTCS-BLACK lists a 1.4-1.6-inch fit.
This SKYJDM combo suits riders who want a grip lock and helmet cable in one security setup for motorcycle stops. Its materials and dual function are specified, but the supplied details do not state a handlebar fit range.
Full product details
| Brand | SKYJDM |
|---|---|
| Color | Black |
| Included Components | Key |
| Item Dimensions | 8.23 x 3.74 x 1.73 inches |
| Dimensions | 8.23 x 3.74 x 1.73 inches |
| Manufacturer | SKYJDM |
| Part Number | CS-01913 |
| Material | Aluminum |
| Model Number | CS-01913 |
| Recommended Uses | securing motorcycles and helmets |
| Special Feature | Anti theft |
| Style Name | Compact |
Listed on Amazon as: Motorcycle & Helmet Anti-Theft Grip Lock Combo, Black
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#6
6. TOKCKYBL Motorcycle Lock Combo
- Material: CNC Auminum Alloy
- dimensions: 5.9 x 4.8 x 1.4 in
- Weight: 0.55 kg
Best for: Combined bike and helmet security.
Why it ranks #6: The two-in-one lock includes a detachable helmet lock and fits listed handlebar diameters of 1.4 to 1.6 inches, but is a broader security system.
A two-in-one setup pairs a heavy-duty motorcycle lock with a detachable helmet lock, so riders can address the bike and helmet with one system. The adjustable handlebar lock fits listed diameters of 1.4 to 1.6 inches, and the construction uses hardened aluminum alloy.
The adjustable handlebar component secures the motorcycle, while the detachable helmet lock adds a separate place to secure riding gear. A tamper-proof key cylinder and weather-resistant coating are specified, with the construction described as resistant to cutting and drilling. The 5.9 x 4.8 x 1.4-inch system weighs 0.55 kg, so it offers combined functions but is more substantial to carry than a small cable lock.
- Combines motorcycle and detachable helmet locks
- Adjustable handlebar fit listed for 1.4-1.6-inch diameters
- Hardened aluminum-alloy construction
- Weather-resistant coating and tamper-proof key cylinder
- The 0.55 kg combined system is heavier to carry than a small cable lock.
Skip it if you need a compact retractable cable for pocket or bag carry; MEETLOCKS MTP0001 weighs 144 g and extends up to 1000 mm.
Choose this TOKCKYBL system if you want bike and helmet security together and your handlebar falls within the stated diameter range. Its combined hardware suits a dedicated setup, but the 0.55 kg weight matters for carrying.
Full product details
| Brand | TOKCKYBL |
|---|---|
| Color | Black |
| Included Components | Helmet Lock, Motorcycle Lock |
| Item Dimensions | 5.9 x 4.8 x 1.4 inches |
| Item Weight | 0.55 kg |
| Dimensions | 5.9 x 4.8 x 1.4 inches |
| Manufacturer | TOKCKYBL |
| Part Number | TKB-MTCS-BLACK |
| Material | CNC Auminum Alloy |
| Model | TKB-MTCS-BLACK |
| Model Number | Motorcycle Lock & Helmet Lock Combo |
| Recommended Uses | Dirt Bike, Motorycle, Snowmobile |
| Special Feature | Anti-Drill, Cut Resistant, Weather Resistant |
| Style Name | Modern |
Listed on Amazon as: Motorcycle Lock, Heavy Duty Anti Theft Helmet Brake Handlebar Lock
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#7
7. TOKCKYBL Upgrade Lock Combo
- Material: Aluminium Alloy
- Weight: 1.28 lb
Best for: Combined lock for larger bars.
Why it ranks #7: This version also combines a motorcycle lock and detachable helmet lock, with a stated 1.4-to-1.6-inch handlebar fit and a 1.28-pound package weight.
A two-part motorcycle and detachable helmet lock gives this TOKCKYBL system a broader role than a helmet-only cable. Its adjustable handlebar lock fits listed diameters of 1.4 to 1.6 inches, and the hardened aluminum-alloy construction has a weather-resistant coating.
The handlebar lock secures the motorcycle while the detachable helmet lock provides a separate way to secure gear, combining two functions in one system. A tamper-proof key cylinder and coating intended for harsh outdoor conditions are specified, with the construction described as resistant to cutting and drilling. At 1.28 pounds and 11.1 x 4.02 x 1.65 inches in package dimensions, this set favors combined use over minimal carry size.
- Combines motorcycle lock and detachable helmet lock
- Adjustable handlebar fit listed for 1.4-1.6-inch diameters
- Hardened aluminum-alloy construction
- Weather-resistant coating and tamper-proof key cylinder
- At 1.28 pounds, the combined system is not a minimal-weight carry option.
Skip it if you want a lighter combined system; TOKCKYBL TKB-MTCS-BLACK is listed at 0.55 kg and includes motorcycle and helmet locks.
This TOKCKYBL model fits riders seeking one system for motorcycle and helmet security, provided the handlebar measures within the listed 1.4-1.6-inch range. Its combined design adds functionality, but its 1.28-pound listed weight affects portability.
Full product details
| Brand | TOKCKYBL |
|---|---|
| Color | Black |
| Included Components | Helmet Lock, Motorcycle Lock |
| Item Weight | 1.28 pounds |
| Item model number | Upgrade Motorcycle Lock |
| Manufacturer | TOKCKYBL |
| Material | Aluminium Alloy |
| Package Dimensions | 11.1 x 4.02 x 1.65 inches |
| Style | Modern |
Listed on Amazon as: Upgrade Motorcycle Lock with 2 Heavy Duty Anti Theft Helmet
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#8
8. ROCKBROS T512-T609 Locks
- Material: Zinc Alloy, Wirerope, PVC Coating
- Weight: 124 g
Best for: Two lightweight cable locks.
Why it ranks #8: The two-piece set uses four-digit codes and PVC-coated wire rope measuring 0.182 inch in diameter, though the listing emphasizes cycling equipment.
This two-piece ROCKBROS set pairs retractable cables with four-digit combinations, letting riders secure helmets without keys and keep a spare lock available. Each cable has a 4.6 mm metal diameter with PVC coating, which helps avoid scratching while providing a simple anti-theft deterrent.
The retractable format keeps each lock small for carrying, then extends to loop around a helmet and an attachment point. A four-digit code is set by turning the lock collar, making the locking routine keyless; photographing the code is suggested in the product information to avoid forgetting it. The PVC-coated 4.6 mm cable is intended to prevent scratches, and the listed set includes two locks for separate uses or gear.
- Two locks included
- Four-digit code is customizable and keyless
- Retractable cable is convenient to carry
- PVC coating helps prevent scratches
- The listed cable is 4.6 mm thick and serves as a simple deterrent, not a rigid lock.
Skip it if you want a mounted helmet lock rather than a cable; Kewig CKB-4 clamps to listed round handlebars and includes an Allen wrench.
This set suits riders wanting two compact, keyless cable locks for helmets or other gear. Its retractable format supports portable use, while the cable’s deterrent role makes it a different choice from a fixed handlebar lock.
Full product details
| Brand | ROCKBROS |
|---|---|
| Color | Black |
| Included Components | Bike Helmet*2 |
| Item Weight | 124 g |
| Manufacturer | ROCK BROS |
| Part Number | T512+T609/CA |
| Material | Zinc Alloy, Wirerope, PVC Coating |
| Model Number | T512-T609 |
| Recommended Uses | Security |
| Special Feature | Lightweight,Anti-theft |
| Style Name | Modern |
Listed on Amazon as: ROCKBROS Motorcycle Helmet Lock 4 Digit Lightweight Retractable 2Pcs
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#9
9. ROCKBROS Retractable Cable Locks
- Material: Zinc Alloy, Wirerope, PVC Coating
Best for: Retractable cable for quick stops.
Why it ranks #9: This keyless four-digit cable lock is listed for motorcycle helmets and other gear, but the supplied specifications give no cable length.
A retractable cable and four-digit combination make this ROCKBROS lock a compact option for securing a helmet without a key. The cable extends for attachment and retracts for storage, while its 0.18-inch metal diameter provides a simple deterrent for brief stops.
The retracting cable can extend around a helmet and a fixed point, then pull back to keep the lock compact when not in use. A four-digit code supports keyless locking and unlocking, and the listed zinc-alloy, wire-rope, and PVC-coated construction combines a metal cable with a coating. ROCKBROS lists motorcycle helmets, bike wheels, strollers, suitcases, and snowboards as uses, making this a small multi-item lock rather than a helmet-only fixture.
- Retractable cable stores compactly after use
- Four-digit combination provides keyless operation
- 0.18-inch metal diameter is specified
- Listed for helmets, bike wheels, strollers, suitcases, and snowboards
- The cable is a simple deterrent, not a rigid helmet-to-handlebar lock.
Skip it if you need a rigid lock mounted directly to a round handlebar; Kewig CKB-4 includes a bar clamp and TPU inserts.
Pick this ROCKBROS model if you want a retractable, keyless cable for a helmet and other portable gear. It suits flexible attachment needs, while riders seeking a fixed handlebar-mounted lock should look at a clamp-style option instead.
Full product details
| Brand | ROCKBROS |
|---|---|
| Color | Black |
| Included Components | Bike Helmet*2 |
| Manufacturer | ROCKBROS |
| Part Number | T512/ZSUS |
| Material | Zinc Alloy, Wirerope, PVC Coating |
| Model | ROCKBROS Retractable Luggage Helmet Lock 4 Digit Little Black, 2Pcs |
| Model Number | 5a0de0e0-ecc6-4e19-92b0-88946e74e6ae |
| Recommended Uses | Motorcycle helmets, bike wheels, strollers, suitcases, snowboards |
| Special Feature | Keyless |
| Style Name | Bend |
Listed on Amazon as: ROCKBROS Helmet Lock, Retractable 4 Digit Cable Lock for Bikes
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#10
10. Master Lock 99KA Cable Locks
- Material: Plastic
- dimensions: 4 x 6 x 2 in
Best for: Two keyed cable locks.
Why it ranks #10: The package includes two keyed-alike locks and four keys, but each vinyl-covered cable is only 14 inches long and is described as a casual-theft deterrent.
Two keyed-alike 14-inch cable locks and four shared keys make this Master Lock set useful when riders need separate helmet locks with one key arrangement. The vinyl-covered cable is 5 mm in diameter, offering a flexible way to deter casual theft or pranks while parked.
Each 14-inch cable can be threaded through a helmet and around a suitable fixed point, so the flexible format works where a rigid mounting lock is impractical. Vinyl covering helps prevent scratching, and the 4-pin tumbler operates with a physical key. Because the two locks are keyed alike and the set includes four keys, riders can keep a common key for both locks while distributing spare keys for access.
- Two keyed-alike cable locks included
- Four keys supplied for the pair
- 14-inch vinyl-covered cable
- 4-pin tumbler security mechanism
- Requires a key and does not provide a combination-based way to unlock.
Skip it if you want to avoid carrying keys; ROCKBROS T512 retractable lock uses a four-digit combination and cable.
Choose the Master Lock set if you need two flexible helmet cables that share a keyed-alike arrangement. It is suited to casual deterrence at parking stops, with the practical boundary that operation depends on having a key available.
Full product details
| Brand | Master Lock |
|---|---|
| Color | Clear |
| Included Components | 2 Motorcycle Helmet Locks and 4 Keys |
| Item Dimensions | 4 x 6 x 2 inches |
| Dimensions | 4 x 6 x 2 inches |
| Manufacturer | Master Lock |
| Part Number | 99KA-2 |
| Material | Plastic |
| Model | Helmet Lock |
| Model Number | 99KA-2 |
| Recommended Uses | Securing motorcycle helmets |
| Special Feature | Key Lock |
| Style Name | Modern |
Listed on Amazon as: Motorcycle Helmet Lock-Master Lock 99KA – 2 Keyed Alike Cable Locks with 4 Keys
View on AmazonAvoiding Cable and Attachment Mismatches
A lock only helps if its cable or attachment can pass through the helmet and reach a secure point on the motorcycle. The MEETLOCKS Retractable Helmet Lock lists a cable that extends up to 1000mm, while the Master Lock 99KA Cable Locks specify a 14-inch cable; those lengths serve different attachment situations. The Urban UR140 Combination Lock includes a T-bar adapter as well as a cable, so check which method suits your helmet before relying on the kit.
A fixed lock introduces a different compatibility trap: the Kewig Aluminum Helmet Lock lists support for round handlebars of 0.875, 1, and 1.125 inches, while both TOKCKYBL combos state a fit for 1.4-to-1.6-inch handlebars. Do not treat those dimensions as interchangeable.
Measure the intended mounting point and check whether a cable can reach the attachment point without forcing or sharply bending it.
What These Locks Can and Cannot Deter
These products can provide a convenient deterrent, but the listings do not establish that any one will defeat a determined thief. The Master Lock 99KA Cable Locks are explicitly described as a solution for deterring a casual thief or prankster, and their 14-inch cable is vinyl-covered with a 5mm diameter. The ROCKBROS T512-T609 Locks list a 0.182-inch PVC-coated wire rope, while the MEETLOCKS Retractable Helmet Lock uses a zinc-alloy hook and a PVC-wrapped cable.
Those are useful details for comparing construction and handling, not evidence of tested resistance to cutting or tampering. The TOKCKYBL Motorcycle Lock Combo and TOKCKYBL Upgrade Lock Combo add a motorcycle lock alongside a detachable helmet lock, but that does not establish a security rating for the helmet attachment.
For unattended parking, consider the lock a way to make casual removal less convenient, and take the helmet with you when the situation calls for greater protection.
How to Choose a Motorcycle Helmet Lock
Locking format and access
Choose a locking format that fits how you park and whether you want to carry a key. The Urban UR140 Combination Lock uses a four-digit code and includes a carabiner, cable, and T-bar adapter; the MEETLOCKS Retractable Helmet Lock also uses a resettable four-digit combination. The KVAEY Motorcycle Helmet Lock instead comes with two keys, while the Master Lock 99KA Cable Locks include four keys for two keyed-alike locks.
A mounted design may suit riders who want a dedicated attachment point, while a portable cable or carabiner can be carried between vehicles or used for other items. Choose a combination model if keyless access matters, and a keyed product if that is your preferred routine.
Check whether the listing includes the components needed for your intended method before buying.
Cable reach and construction
Look for enough cable reach to loop through the helmet and around the attachment point you plan to use. The MEETLOCKS Retractable Helmet Lock extends up to 1000mm, while the Master Lock 99KA Cable Locks list a 14-inch cable with a 5mm diameter. The ROCKBROS T512-T609 Locks specify PVC-coated wire rope at 0.182 inch, but the supplied facts do not state its length.
A longer listed reach may help when the helmet and anchor point are farther apart; a shorter cable can be easier to manage when the connection is close. The Urban UR140 Combination Lock offers a different approach by including a steel cable alongside a carabiner and T-bar adapter.
Match the stated length and cable style to your setup rather than assuming all cables can reach the same locations.
Mounting compatibility and added functions
Check the dimensions of a mounting point before choosing a handlebar lock, and distinguish a helmet-only lock from a motorcycle-and-helmet combo. The Kewig Aluminum Helmet Lock lists round-bar fit for 0.875-, 1-, and 1.125-inch handlebars and includes replaceable inserts for 22mm and 25mm bars. The TOKCKYBL Motorcycle Lock Combo and TOKCKYBL Upgrade Lock Combo list 1.4-to-1.6-inch handlebar diameters, so they are not direct substitutes for the Kewig fit range.
The SKYJDM Grip Lock Combo also combines motorcycle and helmet locking functions, though the supplied details do not specify a handlebar diameter. Choose a dedicated helmet lock if helmet security is your priority; consider a combo only when its extra motorcycle-lock function and stated fit suit your bike.
Verify dimensions where the listing leaves compatibility unclear.
Which Motorcycle Helmet Lock Should You Choose?
Choose the Urban UR140 Combination Lock if you want a portable, keyless kit with a carabiner, steel cable, and T-bar adapter. For a fixed lock on a round handlebar, pick the Kewig Aluminum Helmet Lock if your bar matches its stated 0.875-, 1-, or 1.125-inch fit; choose the KVAEY Motorcycle Helmet Lock if you prefer a keyed lock supplied with two keys. If cable reach is your priority, the MEETLOCKS Retractable Helmet Lock has the longest stated extension at up to 1000mm.
Riders wanting a motorcycle lock and helmet lock together can compare the SKYJDM Grip Lock Combo with the TOKCKYBL Motorcycle Lock Combo, checking fit before choosing. The ROCKBROS T512-T609 Locks suit buyers looking for a two-piece combination set, while the Master Lock 99KA Cable Locks offer two short, keyed-alike cable locks.
Frequently Asked Questions
How can I secure a helmet without scratching its shell or visor?
Keep the lock and cable away from the shell and visor, and avoid letting metal parts rub against them. Use a helmet attachment point or adapter where available, and position the helmet so it does not swing against the motorcycle. Check the contact points before leaving it secured.
Will a handlebar-mounted helmet lock fit my motorcycle?
Fit depends on the handlebar and the lock’s mounting range. The Kewig is stated to fit round handlebars measuring 0.875, 1, or 1.125 inches; check your bar against those sizes before choosing it. For other handlebar locks, confirm compatibility with your motorcycle before purchase.
Can a motorcycle helmet lock protect a helmet from determined theft?
No portable helmet lock should be treated as theft-proof. It can deter opportunistic removal and make a helmet harder to take quickly, but a determined thief may defeat a lock or damage the helmet. Secure it in a visible place and take it with you when practical.
Should I choose a keyed or combination helmet lock?
Choose a combination lock if you want keyless access, and a keyed lock if you prefer using a physical key. The Urban UR140 is a combination kit, while the KVAEY lock is supplied with two keys. Consider how you prefer to manage access and carry the lock.
How much cable reach do I need for securing a helmet?
Choose cable reach based on where your motorcycle lets you attach the helmet and how far the lock must span. The MEETLOCKS retractable cable is stated to extend up to 1000mm. Check your intended routing and attachment points before relying on any cable’s reach.
Final Words
For a versatile keyless setup, choose the Urban UR140 kit with its carabiner, steel cable, and T-bar adapter. If you want a fixed round-handlebar lock, compare your bar size with the Kewig’s stated fit; choose the keyed KVAEY if two supplied keys suit you better. For reach, consider the MEETLOCKS cable.
Whichever style you select, verify fit and treat the lock as a deterrent, not a guarantee against theft.

