Overview: A durable, standalone replacement left crank arm designed to get your bicycle drivetrain back into optimal working order for recreational, commuting, or trail use.
Ideal for: Cyclists looking to replace a damaged, cross-threaded, or stripped left crank arm on standard bicycles equipped with square-taper bottom bracket spindles.
Product Benefits:
High structural strength made from forged 6061 aluminum alloy for dependable everyday pedal power and impact resistance
Universal interface compatibility precision engineered to seat firmly onto standard square-taper chainsets
Lightened weight footprint weighing only 250 g to minimize rotational mass without sacrificing arm rigidity
Direct drop-in repair serving as an accessible workshop-grade replacement component to extend bike longevity
Technical Information & Composition:
Composition: Main part: 100.0% 6061 Aluminium.
Dimensions: Crank arm length: 175 mm
Weight: 250 g
Item ID: 8615104
Special Info: Exclusively compatible with square-taper (square spindle) bottom bracket setups. Ensure correct matching alignment with your right crank arm and adhere to precise torque specifications when tightening. It is strongly recommended to have drivetrain component installation verified by a qualified bicycle technician.
Brand Bio: Decathlon's dedicated cycling spare parts and workshop line is committed to offering highly reliable, fully compatible components that empower riders to service, maintain, and expand the lifespan of their gear sustainably.
What's in the box
1 x Cycling Left Crank Arm 175 mm
1 x Technical Safety Manual
