Best Electric Bike Cranksets in 2026

8mm Hex Head Crank Fixing Bolt and Cap Pair

Hex-type steel crank fixing bolt set with integrated plastic dust cap

bolt size: 8x1.0mm hex cap

STRONG AND DURABLE PROTECTION: Our crank defender protection is designed to last! Our crank cover has extra protection to protect your mountain bike by not absorbing water, mud or dirt!

HIGH QUALITY MATERIALS: This crank boot brings an elegant solution to protect your cranks and add some style. This top quality kit includes 2 crank defenders to cover the pertinent area of your bike!

CUSTOMIZE YOUR BIKE: Don't ruin the look of your bike, improve it! Whether you ride a steel, aluminum or carbon frame protect your cool rig in All Mountain Style. We have different colors available to improve the look of your bicycle!

175mm crank arm length

Comes with 3 chainrings - 42/32/22

Comes with a chainguard

Hyperdrive SG-X chainrings

Chainguard integrated design

Chainguard model

Shimano FC-M311 Altus square taper chain set, 42/32/22T, without chain guard, 175 mm

【Crank】:104 BCD ultralight mountain bike crank, only can be used on Single speed chainring. Crank Arm Length: 170mm, Crank weight: 550g, Crank related holes distance: 74mm.

【Chainring】Snail single speed narrow wide teeth chainring, 104BCD, 32/34/36/38/40/42T, Round/Oval, Black/Red, Chainring thickness 4mm (Narrow teeth: 1.9mm, Wide teeth: 3.7mm), Weight: about 45g.

【Note】These crank and chainring are only suitable for single speed. Can not be used on other speed. If you have any problem before or after purchase, feel free to contact us.

Good material: CNC steel construction, high strength. With plastic seal, no separate crank cap needed.

Package included: A pack of 10 will put in big polybag. 0.31''*0.71''.

Application: Suitable for square hole crankset & bottom bracket.

Teeth: 48T, Crank Arm: 170mm, BCD: 130mm (Not include Bottom Bracket)

Pedal Size: 9/16". Chain Size: suitable for 1/2" X 1/8" single speed chains, doesn't support any variable speed chains

170mm crank arm length without any overlap of crank arm and chainring bolt

Available in 2 Spindle Interface Mode：Diamond Interface and Square Interface.

Hole spacing length:170mm(Please make sure it is the same as your original); total length:210mm;

Material: high quality Aluminum alloy.

Replacement Left Hand Crank arms

Compatible with 9/16 pedals

LONG SERVICE LIFE-Made of premium aluminium alloy, lightweight, high strength and deformation resistance, durable for long time use.

EXQUISITE WORKMANSHIP-Fine polish and great paint, colorfast and stylish.

PERFECT CUTTING-Standard precision cutting of hole, which ensures perfect fit to bike, easy to install. ÉÌƷÌØÐÔ

【SIZE】 BCD: 130mm, Crank Arm length: 170mm, Chainring（3/32" 52T)，compatible with 9/16" pedals, chain size 1/2"*1/8", chain line 45mm, B.B.Axle recommended 118mm. External width between chain guard is 15.4mm (0.6in), total diameter of chain guard is 226mm (8.9in).

【MATERIAL】This crank set is made of forged aluminum alloy 6061-T6 and 3mm alloy chainring, which is of high strength and durable, weight is approx 725g/1.60lb.

【NEW DESIGN】Our crankset has high strength, can be used for a long time. Light weight design, adding no heaviness to you bike, make riding more comfortable and relaxing. Double alloy chainring cover, avoid chain rubbing riders pants, prefect for daily commuting.

Material:Aluminium 6061-T6; BCD:110mm; Pedal crankarms:170mm;

Dimension: approx. 180*125mm / 7*4.9in (crankset), 205*33mm / 8*1.3in (crank); Burly and lightweight forged crankset for ultimate strength and reliability; These are intended to be used on single speed Mountain Road Bike Fixed Gear Bicycle

Compatible with 9/16 inch pedals; 1/2"*1/8" chain work well on this crankset

Cold Forged Arms

Durable Finish

Comes with crank bolts

Compatible Speed：Suitable for 6/7/8 speed mountain bike.

Crank Length: 170mm, forged alloy crank arms with sturdy carbon steel chainring.

Pedal Size: 9/16 inches, please measure the size to confirm it fit your bike before order.

HIGH QUALITY MATERIAL: The crank arms are made of high quality materials, this product is sturdy and durable.High strength, high hardness, not easy to deform.

PERFECT DESIGN:The crank arms adopt sample design, fine workmanship, used for bike mid drive motor installation.Total length and width is approximately 21 * 3.8cm / 6.3 * 5.9inch.Weight is approximately 450g.

Note:The product is a special crank for Tongsheng mid-mounted motor.

【High Grade Crankset】The surface of mtb crankset is frosted and anodized, and at the same time, the density of the aluminum alloy in the threaded part of the crank arm is increased, which effectively protects the crank and prolongs the use time.

【Crankset Size】High-quality aluminum alloy square taper crankset, crank arm length is 170mm, suitable for 104BCD single speed chainring and 9/16" pedals.

【BCD104 Chainring】The alternate design of narrow and wide teeth can effectively prevent the chain from falling off. 32T/34T/36T/38T round black chainring are available in a variety of options to meet various needs.

Perfect for ebikes and electric bicycles looking to sustain a higher top speed.

170mm Crank Arm Length without any overlap of crank arm & chainring bolts

Standard Bolt Circle Diameter (BCD): 130, Fits 9/16 inch pedal axle

【Durable Material】: Constructed with premium aluminum alloy, the bike crank arm is durable and strong, has fine polishing, smooth edges, ensures high strength for long lasting usage

【170mm Bicycle Left Crank Arm】: The center distance between two holes is 170mm, spindle interface type, horizontal square taper, without any overlap of crank arm and chain ring bolt

【Ideal Bike Crankset Accessory】: Left hand pedal crank arm is suitable for road bike, mountain bike, folding bike, fixed gear bicycle, etc; A nice replacement for bike repair, compatible with many bike models

Material: The Bicycle crank arms are made of Forged Alloy 6061, this crank arm is sturdy and durable,High strength, high hardness, not easy to deform.

Size: This Bike Crank Arm Length is available in 5 sizes（152MM/160MM/165MM/170MM/175MM）,Before purchasing this product, please make sure that the size of this product is consistent with the size you need.

Spindle Interface Type: Square taper. Please check if the orientation of your right crank is Square. Keep both left and right things having the same hole.

☆【Premium Quality】: This bike crank arm is made of premium quality aluminium alloy material, which is sturdy and durable in use. It is not easily damaged and deformed, has reliable quality and ensures high strength for long lasting usage.

☆【Exquisite Workmanship】: The 170mm crank arm adopts standard precision machining, which ensures chain retention, increases service life and reduces friction and noise.

☆【Excellent Performance】: The 170mm bike crank arm is lightweight, which adds no heaviness to your bike. 170mm crank arm length without any overlap of crank arm and chain ring bolt.

Model: 170-FC-301; crank arm length is 170mm, gear combination is 42-34-24T, SHIMANO TOURNEY TY-MTB Crankset-170mm for 3x8/7/6-speed.

Features: Light and reliable shifting; Precision indexed shifting DUAL SIS-Versatile performance; Wide compatibility with multiple components; Quick and precise assembly.

Material: The crank is made of aluminum alloy, which increases the rigidity of the crank and reduces the weight, so the biting force between the crank and the bottom bracket is more even.

【MATERIAL】This Crankset Bolts is made of CNC steel construction, high strength and durable, weight is approx 14g/pcs（0.03lb/pcs).

【SIZE】Please make sure to use metric 8mm allen head for installation. Crank arm bolts 8mm(0.31") x15mm(0.59").

【COMPATIBILITY】Our 8mm Hex fixing screws is easy installation, a good replacement for crankset repair, suitable for any square hole crankset & bottom bracket.

Compatible with all Bafang Mid Drives BBS01 36V 250/350W, 48V 350W, BBS02 36V 500W, 48V 500/750W BBS 1000W.

Easy to install. Tighten the Left Crank backwards (counterclockwise). Clockwise install to the drive right one.The cank arm is made of Aluminum alloy construction and it is durable and strong.

Total length is 20.5cm. The original crankset has a hole pitch of 1.02 inch and a total length of 8.03 inch. Spindle interface type and horizontal square taper.

【Bicycle Crankset Size】High-quality aluminum alloy AL6061 square taper crankset, crank arm length is 170mm, suitable for 104BCD single speed chainring and 9/16" pedals.

【Package Includes】: 1 x quare Taper crank; 1 x 104BCD Chainring; 4 x Chainring bolts (set)

【Single Speed Only】Please note that these crank and chainring are only suitable for single speed bikes. If you have any questions or concerns, please don't hesitate to contact us.

【Package】You will get 10 hex crank arm fixing bolts, plenty of quantity to meet your daily needs and avoid the hassle of multiple purchases.

【Material】The allen key bolt screws are made of high quality metal material and wrapped with plastic gasket, no need for a separate crank cover, strong and durable.

【Function】The crank fixing screws can effectively avoid the influence of external water, sand and mud on the central shaft, increasing its service life.

FINE WORKMANSHIP: With original standard, direct replacement for the old or broken one, really practical accessory for refitting electromobile and electric bicycles.

SUPERIOR QUALITY: Made of high quality metal material, this Teeth Crankset Set is rugged and durable.

EASY TO USE: Easy to install, no complicated tools required, convenient to use.

【Size】: 48T, 170mm crank, , 1x, Outer Diameter: 210 mm

【Material】: Steel alloy bicycle square crank, strong, convenient and cheap. Here's an easy and quick alternative to bike repairs.

【Design】: Black ABS plastic protective case. Versatile color design, and prevent the chain from falling off.

HIGH COMPATIBILITY: Suitable for BMX Bike, BMX Bike - Old School, Cruiser, Cyclocross Bike, electric bicycles, folding bicycles, hybrid / comfortable bicycles, mountain bicycles.

EXQUISITE WORKMANSHIP: Sample design, fine workmanship, used for bike mid drive motor installation.

EASY INSTALL: Lightweight and small size, easy to install and use.

【Duarable Material】These crank sets are made from high strength material, ensuring they are long-lasting, lightweight and handle the abusive ways of the trail. Featuring irregular teeth and chain pick-up pins for smooth and fast shifts. High strength steel and CNC aluminium to ensure longevity.

【Compatible With】Crank Arm length: 170mm, Chainring（3/32" 48T)，compatible with 9/16" pedals, chain size 1/2"*3/32, total diameter of chain guard is 208mm (8.19in). Applicable for 20-26 inch folding bike. Please measure the size Check Frame chain stay clearance to confirm it fit your bike before you order.

【New Design】Our crankset has high strength, can be used for a long time. Light weight design, adding no heaviness to you bike, make riding more comfortable and relaxing. Double alloy chainring cover, avoid chain rubbing riders pants, prefect for daily commuting.