Best Crank Arms 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

Chromoly Crank Arms, Chromoly Spindle with 8 Splines

American Bottom Bracket (Sealed Bearings)

Sold As Complete Set

【Chainring】Bucklos 104 BCD Single speed chainring, narrow wide tooth design, which can keep your chain from dropping. Size includes: 30/32/34/36/38T/40T/42T. Shape: Round/Oval.

【Crank】104 BCD ultralight mountain bike crank, solid and durable, only can be used with single speed chainring. And, this crank will fit most standard square taper bottom bracket. Crank weight: 550g. Crank related holes distance: 74mm. Crank Arm Length: 170mm.

【Note】About these product, we have something important to tell you. The crank and chainring are only used for single speed, can not be used with other speed or chainring. If you are in issues before or after purchasing, please contact us in time.

Made of aluminum alloy, light weight, stylish, flashy styling, high axial strength and compatibility.

Bottom Bracket Width: 68-73mm can be fine.

BCD:104mm.Crank Arm length 170mm，Crank related holes distance 74mm.

【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.

Material: Alu 6061 MTB crank ,Design of Stiffener,Durable,Light Weight,only 499g/set.7075 Alloy Aluminum 36 Tooth 104 Chainring

Teeth: 36T,Shape:Round. Chainring Weight: 54.5g(0.12 lbs) ,Fit for 9,10,11 Speed Mountain crankset

BCD: 104mm(Outer Circle) , 64mm(Inner Circle).Color: Black .

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.

Material: Alloy 6061 crank, high-strength steel chainring, detachable sprocket, easy to modify single-speed chainring. Scope of application: mountain bikes, hybrid vehicles, old school, cruisers, off-road vehicles, folding bikes, road bikes, track and field bikes, unicycles, city bikes.

Crank length: 170mm, BCD: 104mm(44T,32T), 64mm(22T)

Compatible speed: 7S/8S/9S, square cone BB (113mm~116mm spindle)

【High Intensity Aluminium Alloy Material】Our bike crankset made of aluminium alloy, light weight, stylish appearance, strong compatibility.

【Precision Work】The multi-stripe fixing method is adopted to ensure the ultimate chain retention, increase the working life, and reduce friction and noise.

【Dimension】BCD: 104mm/4.09in, Crank Arm length: 170mm/6.69in, Outer diameter of shaft: 24mm/0.94in, Bottom Bracket Width: 68-73mm/2.67-2.87in.

Excellent Material：Made of strictly selected Anti-pulling silica gel, provide high elasticity, comfortable feeling and better protection for your bicycle cranks. Injection-molded durable silicon material provide strong protection to your carbon crank arms from rock strikes or other damages.

Exceeding Manufacturing Workmanship: Wear and tear resistant material bring strong impact resistance, and light weight make the appearance stylish and outstanding.

High compatibility and Colorful Choice: These crank boot protector provide 360° Protection for your crank, effectively prevent cranks from scratches, mud and dents from pedal strikes.

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.

【High-Quality Material】The Crank Bolt is constructed using high-quality aluminum alloy material that is resistant to rust and durable, providing a safer guarantee for your life and ensuring a longer lifespan for the product.

【Compatible Fitment】Crank Bolt for Shimano,The Crank Screw is specifically designed to fit the 590 596 XT XTR SLX crankset, making it a great replacement part for your broken or old ones.

【Multiple Color Options】Crank Screw,The Chainring Bolts are available in multiple colors, giving you the option to choose your favorite color based on your preferences and needs, and also updating your bike's appearance.

Made of aluminum alloy, light weight, stylish, flashy styling, high axial strength and compatibility.

Bottom Bracket Width: 68-73mm can be fine.

BCD: 104mm. Crank Arm length: 175mm, Crank related holes distance: 74mm.

Replacement Left Hand Crank arms

Compatible with 9/16 pedals

Tubular chromoly heattreated arms, chromoly spindle

Includes bb set; slim crankarm design, left & right side sprocket bolt boss, adaptor for USA bb shell

Bore:: 19

High-quality Material-The crank bolt is made of high-quality aluminum alloy, which is rust-proof, strong, firm and durable. Good processing with good texture can ensure a long service life.

Practical Function-This product is used to fix the crank and crank of the sprocket. Suitable for mountain bikes and road bikes with 590 596 XT XTR SLX crank pair.

Reasonable Price-One package, good quality, reasonable price, you will like it.

★The crank protector is made of high quality soft silicone, durable and tear resistance.

★Protect your carbon crank bike from scratches and dents from pedal strikes.

★Compatible with 95% bike crankset in the market.

【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.

Cold Forged Arms

Durable Finish

Comes with crank bolts

Offers the same chain retention performance as seen in all higher-level Eagle drivetrain cranks

32t direct mount X-SYNC 2 steel chainring included

Aluminum crank arms

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

890g w/BB

Forged AL-6061 T6 alloy crank arms

Al-7075-t6 hard-anodized Chainrings, alloy chain ring 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.

Novel design: The crank boot protector has a stylish appearance, soft, non-slip, shockproof, and oil resistant.

Rugged and durable: The crank arm protector made of highly wear-resistant silicone, durable.

Simple installation: remove your feet, and then put on the pedal crank protection cover to protect your crank from scratches and pedal hits.

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 Quality】: High-strength aluminum alloy material, high strength, fine workmanship, improve strength and rigidity; the surface of the 32T square taper crankset is frosted and anodized, which effectively protects the aluminum alloy body and does not fade after long-term use

【Upgrade Design】Narrow wide teeth for better chain retention. Removable chainring ,3 pieces chainrings crankset design, easy to modify single speed crankset, dual crankset, triple crank set. Light weight design, adding no heaviness to you bike, make riding more comfortable and relaxing

【Crankset Size】104BCD Mountain bike crankset, crank arm length: 170mm, chainring（3/32" 38T)，compatible with 9/16" pedals; chain size 1/2"*1/8"; chain line 45mm; B.B.Axle recommended 117.5mm. Total diameter of chainring is 158mm (6.2in).

【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.

【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