Best Square Taper Single Speed Crankset for Different Builds

#1 · Best Overall

1. Cyclon Single Speed Crankset

• Material: Aluminum
• Weight: 0.77 kg
• Package Weight: 0.77 kg

Best for: Narrow-wide 104BCD conversion.

Why it ranks #1: Explicit square taper fit, 170mm arms, 104BCD mounting, and 32T–42T narrow-wide ring choices make it the most adaptable match.

A narrow-wide chainring paired with a 104BCD mounting pattern gives this Cyclon a practical route to a single-ring setup, with tooth sizes offered from 32T through 42T. Its 170mm square-taper arms suit riders replacing a crankset who want to choose gearing while retaining a familiar pedal-thread standard.

The 104mm BCD connects the ring to a common four-bolt pattern, while the available 32T–42T options let riders select a different chainring size for their intended terrain. Narrow-wide tooth shaping is specified to help retain the chain during single-speed riding. The 170mm arms use a square-taper interface and accept 9/16-inch pedals, and the product listing specifies compatibility with 8-, 9-, 10- and 11-speed setups. Frosted, anodized surfaces add a treated finish.

Skip it if you need multiple front chainrings; this Cyclon is specified as a single-speed crankset with one chainring.

A useful choice for riders replacing a 170mm square-taper crank and selecting among several 104BCD ring sizes. Check that the chosen tooth count suits your gearing; this is a single-ring setup, not a multi-chainring crankset.

Listed on Amazon as: Cyclon Single Speed Square Taper Crankset, 170mm Mountain Bike Crankset with 104BCD 32T/34T/36T/38T/40T/42T Narrow Wide Tooth Round Black Chainring, Replacement for Bicycle Crank Arm Set MTB Crankset

#2 · Best 46T Option

2. DONSP1986 Single Speed Crankset

• Material: Aluminum
• Package Weight: 0.77 kg

Best for: 46T ring for square-taper bikes.

Why it ranks #2: This square taper 46T crankset specifies 170mm arms, 130BCD, and bottom-bracket fit between 103mm and 107mm.

A stated square-taper bottom-bracket fit range of 103mm to 107mm gives this DONSP1986 46T crankset a specific compatibility reference. Its 130mm BCD and 170mm arms suit single-speed mountain, road and fixed-gear riders who can match those dimensions to their bicycle.

The 103–107mm bottom-bracket fit range helps narrow compatibility checks before installation, while the 130mm BCD identifies the chainring bolt-circle pattern. Its 46T ring provides the gearing configuration, and the 170mm crankarms give a clear length specification. The crankset uses 6061-T6 aluminum alloy with an anodized surface, combining a stated material and finish. The listing also identifies it for single-speed mountain, road and fixed-gear bicycles, rather than presenting it as a multi-ring setup.

Skip it if you need a bottom-bracket fit outside 103–107mm; the ZZRSDAN crankset lists 68×118mm, 68×120mm and 68×122mm sizes.

A practical option for single-speed mountain, road and fixed-gear riders whose square-taper bottom bracket measures within the stated range. Its 46T ring and 130mm BCD should also match the intended gearing and mounting setup.

Listed on Amazon as: Crankset Set Single Speed 46T 170mm Crankarms 130 BCD for Mountain Road Bike Fixed Gear Bicycle (Square Taper, Black) (46T, Sprocket)

#3 · Best Chain Flexibility

3. MAMBAS 46T Crankset

• Material: Aluminum, Steel
• Weight: 1.5 lb
• Package Weight: 1.6 lb

Best for: 46T urban single-speed gearing.

Why it ranks #3: The 46T steel ring supports both 1/2 × 1/8-inch and 1/2 × 3/32-inch chains, with 170mm arms and square taper compatibility.

A 46-tooth steel chainring gives the MAMBAS crankset a larger fixed ring choice for city riding, track cycling and cruisers. Forged aluminum arms keep the crankarm material distinct from the steel chainring, while 170mm length and square-taper compatibility make it a replacement option for standard interfaces.

The 46T ring accepts both 1/2 × 1/8-inch and 1/2 × 3/32-inch chains, giving riders a choice across those stated chain formats. Its 170mm arms offer a consistent crank length for commuting or fitness use, and the square-taper interface fits standard square-taper bottom brackets. The 9/16-inch pedal threads match a common pedal size. Included components are the chainring, both crank arms and a crank bolt, covering the listed crankset parts for replacement.

Skip it if you need a smaller chainring choice; the Cyclon Single Speed Square Taper Crankset lists several sizes from 32T to 42T.

A fit for urban commuters, cruisers and track riders wanting a 46T single-speed crank with 170mm arms. Its fixed tooth count and square-taper interface are the key boundaries to weigh against your gearing and bottom bracket.

Listed on Amazon as: Single Speed Crankset 46T, Forged Aluminum Arm, Square Taper

#4 · Best BB Fit Detail

4. ZZRSDAN 40T Crankset

• Material: Aluminum
• Weight: 0.89 kg
• Package Weight: 0.89 kg

Best for: Broad bottom-bracket length range.

Why it ranks #4: It directly identifies a square taper interface and lists compatibility with 68mm bottom brackets in 118mm, 120mm, or 122mm lengths.

Compatibility with 68×118mm, 68×120mm and 68×122mm bottom-bracket sizes is the defining detail of this ZZRSDAN crankset. Its 170mm arms, square-taper interface and 40T single-speed ring make it a replacement candidate for several listed road, mountain, folding and fixed-gear bicycle types.

The stated bottom-bracket dimensions give buyers three specific size combinations to compare with their existing setup before installation. A 170mm crankarm length and 9/16-inch pedal compatibility provide clear interface details for assembling the crank. The 40T single-speed ring uses a 1/8-inch chain specification, so that chain format is a practical compatibility check. The listing identifies forged alloy crankarms and a solid carbon-steel chainring; the bottom bracket is excluded, so it must be sourced separately if needed.

Skip it if you need a crankset supplied with its bottom bracket; this ZZRSDAN listing explicitly excludes that component.

Consider it for a road, mountain, folding or fixed-gear bike matching one of its listed bottom-bracket sizes and 1/8-inch chain specification. The bottom bracket is not included, so account for that separate installation requirement.

Listed on Amazon as: 170mm Crankarm Single Speed Crankset for Mountain Road Bike Fixed Gear Bicycle Folding Bicycle(Square Taper, Black, Sprocket) (40T Single Speed Crankset-Black)

#5 · Best 38T Option

5. GANOPPER 38T Crankset

• Material: 6061 Alloy, Alu 7075
• Package Weight: 0.81 kg

Best for: 38T narrow-wide MTB conversion.

Why it ranks #5: The removable 104BCD 38T narrow-wide ring and 170mm arm suit a single-speed conversion, though the listing also emphasizes multi-speed use.

A 38T narrow-wide ring with 4mm tooth-width design is the key chain-retention feature of this GANOPPER crankset. The removable 104BCD chainring and 170mm arms give mountain-bike riders a single-speed conversion option with a stated path to changing ring size.

The 104BCD removable-ring design lets riders modify the chainring rather than treating the installed 38T ring as permanent. Its narrow-wide teeth are specified to improve chain retention, while the listing states compatibility with 9-, 10- and 11-speed mountain-bike crankset setups. Alloy 6061 crank construction and an Alu 7075 chainring provide the named materials, and the 170mm size identifies crank length. The product also lists 152mm and 165mm options in its title, alongside 170mm.

Skip it if you want a larger ring already supplied; the WEEROCK Mountain Bike Crankset comes with a 42T chainring.

A fit for mountain-bike riders seeking a removable 104BCD ring and a 38T narrow-wide starting point. Its multiple listed crank lengths and stated speed compatibility merit checking against the exact setup before choosing.

Listed on Amazon as: MTB Crank Arm Set 104 BCD Square Taper Mountain Bike Crankset 152mm 165mm 170mm

#6

6. BOLANY 104BCD Crankset

• Material: Aluminum
• Weight: 1.1 kg
• Package Weight: 1.1 kg

Best for: 7075 alloy 104BCD setup.

Why it ranks #6: Its 170mm, 104BCD square taper 1x design is offered with 32T, 34T, or 36T rings, but chain and BB dimensions are not detailed.

High-strength 7075 aluminum alloy is the key material feature of this BOLANY 1x crankset, paired with a 104BCD ring and 170mm arms. That combination suits riders seeking a square-taper single-ring replacement, with 32T, 34T and 36T sizes identified in the product title.

The 104BCD mounting pattern gives the single chainring a defined bolt-circle interface, while the listed 32T, 34T and 36T options let riders choose among three gearing sizes. A 170mm arm length provides a clear crank dimension to compare with the current setup. The uncoated-arm description emphasizes a surface without an external coating, and the 7075 alloy is presented as high-strength and weight reducing. Its square-taper format identifies the bottom-bracket interface for installation planning.

Skip it if you want a chainring larger than 36T; the WEEROCK 42T crankset offers a larger listed ring size.

A candidate for riders seeking a 170mm square-taper 1x crank with 104BCD mounting and a 32T–36T range. Choose it when those listed sizes suit your gearing; its specified options do not extend above 36T.

Listed on Amazon as: BOLANY Mountain Bike Crankset MTB 1x Square Taper Crankset 104 BCD 170mm Crank 32/34/36T Compatible with Single Speed Bicycle

#7

7. PETCHOR 32T Crankset

• Material: aluminum alloy
• Weight: 0.69 kg
• Package Weight: 0.69 kg

Best for: Removable-ring conversion option.

Why it ranks #7: The 104BCD square taper setup has a removable narrow-wide ring and conversion-friendly design, but supplied details establish only the 32T size.

A removable chainring is the PETCHOR crankset’s most useful distinction, giving riders a stated route to modify the setup rather than treating the ring as fixed. The 32T square-taper single-speed configuration combines a 104BCD pattern with narrow-wide teeth for chain retention.

The 104BCD interface and removable ring support the listing’s stated modification potential, including changes among single, double and triple crankset configurations. Narrow-wide teeth are specified to improve chain retention in the single-ring setup. Its aluminum-alloy construction has a frosted, anodized surface, described as protecting the body, while the 32T size gives the current ring configuration a concrete gearing reference. The square-taper interface makes bottom-bracket compatibility an important installation consideration.

Skip it if you want a larger supplied ring; the MAMBAS Single Speed Crankset comes with a 46T chainring.

Best suited to riders who value a removable 104BCD ring and want a 32T starting configuration for a square-taper bike. Its supplied tooth count is the main gearing boundary, so choose it with that setup in mind.

Listed on Amazon as: Square Taper Crankset MTB Single Speed Bike Crank Set with 104BCD Chainring

#8

8. laffoonparts 32T Crankset

• Material: Aluminum
• Weight: 0.7 kg
• Package Weight: 0.72 kg

Best for: 32T round-or-oval choice.

Why it ranks #8: This 104BCD 32T round-or-oval option is described as square taper and suitable for single speed, but gives fewer precise fit details.

A choice between round and oval 32T chainring shapes distinguishes this laffoonparts crankset from a single-shape listing. Its 104BCD pattern and 170mm square-taper arms target riders replacing a single-speed crank on mountain, commuter or electric bikes.

The 104BCD mounting pattern pairs with the listed 32T ring, while the round-or-oval choice lets buyers select between the two stated chainring shapes. Aluminum-alloy construction is described as lightweight, strong and corrosion resistant, which can help keep the crank manageable and suited to regular riding conditions. Its 170mm arms and square-taper format provide the key fit details for replacement planning. The listing also calls for regular bolt and chain inspections and proper torque settings during installation.

Skip it if you require a chainring above 32T; the WEEROCK Mountain Bike Crankset lists a 42T ring.

A sensible candidate for riders whose setup calls for 32T and who want to choose a round or oval shape. Confirm the square-taper and 104BCD interfaces against your bike, and follow the listed bolt and chain inspection guidance.

Listed on Amazon as: Mountain Bike Single Speed Square Taper Crankset 170mm Cranksets Bicycle Crank Set with 104BCD 32T Round/Oval Chainring, Replacement for Shimano Replacement for SRAM Replacement for FSA

#9

9. CYSKY 58T Crankset

• Material: Aluminium
• Weight: 16 oz
• Package Weight: 0.8 kg

Best for: Large-ring folding-bike setup.

Why it ranks #9: Square taper, 170mm arms, and 130BCD are specified, but the large 58T ring and stated 1/8-inch chain limit its use cases.

A 58T ring option makes this CYSKY crankset a large-chainring choice for folding bikes, track-road bikes and fixed-gear bicycles. The 130mm BCD, 170mm arms and 1/2 × 1/8-inch chain specification establish its key setup details for riders planning a square-taper replacement.

The 130mm BCD and large 58T ring define a different mounting and gearing combination from smaller-ring 104BCD options. The 170mm arms are specified without overlap between the crankarm and chainring bolt, a useful clearance detail for installation planning. Its 7075-T6 aluminum-alloy construction is described as forged, lightweight and strong. The crankset fits 9/16-inch pedals and a standard 1/2 × 1/8-inch chain; the bottom bracket is not included, so source that separately if needed.

Skip it if you need a bottom bracket in the package; this CYSKY crankset listing says it is not included.

A match for riders wanting a large 58T ring on a folding, track-road or fixed-gear bicycle with the listed chain and pedal sizes. Its 130mm BCD and excluded bottom bracket are important installation boundaries.

Listed on Amazon as: CYSKY Single Speed Crankset E-Bike Crank 170mm 130 BCD 48T/53T/56T/58T/60T Square Taper Bike Crankset for Folding e-Bike Fixed Gear Track Road Bike

#10

10. WEEROCK 42T Crankset

• Material: Aluminium
• Package Weight: 0.68 kg

Best for: 42T multi-speed MTB option.

Why it ranks #10: It offers a 170mm arm and 104BCD 42T narrow-wide ring, but the supplied information does not establish square taper compatibility.

A 42T narrow-wide ring paired with stated compatibility across single-speed and 6- through 11-speed bikes gives this WEEROCK crankset a broad use range. Its 104BCD pattern and 170mm aluminum-alloy arm make it a replacement candidate for mountain and folding bicycles.

The narrow-wide tooth profile is specified to help prevent chain drop, supporting the listing’s use across single-speed and multi-speed MTB configurations. Its 104BCD ring pattern is described as convenient for future chainring replacement, giving buyers a defined mounting interface for later changes. The 170mm arm length helps match an existing crank dimension, while aluminum alloy is described as sturdy and non-rusting. The listed ring is 42T, and compatibility includes folding bicycles as well as 6- through 11-speed MTB bikes.

Skip it if you need a larger supplied ring; the CYSKY Single Speed Crankset lists a 58T option.

A versatile candidate for riders matching a 170mm, 104BCD setup who want a 42T ring for a single-speed, MTB or folding bike. The supplied tooth count remains fixed in the listed configuration.

Listed on Amazon as: WEEROCK Mountain Bike Crankset Aluminium Alloy 1 Piece/Single 42T Charing Crank Set with 170mm Arm 104 BCD, Compatible with Single Speed Bicycle and 6/7/8/9/10/11 Speeds MTB Bike