Aluminum Left Hand Crank Arm For Mountain And Road Bikes, 170mm Single Chain Crankset Replacement, Black, Durable Alloy Bar, Pedal Crank Arm, High Strength Aluminum

Left Hand Aluminum Crank Arm 170mm for Mountain Bikes
✔️ Premium alloy 170mm left crank arm for road and mountain bikes

This left hand crank arm serves as a direct replacement part for bike pedal systems and works on road bikes mountain bikes and folding bikes alike.

✅ Constructed from strong aluminum alloy for lasting durability
✅ 170mm length with standard taper hole for easy fit
✅ Lightweight design around 200 grams without chainring overlap
✅ Black finish with rhombic hole option for secure installation

💡 What does a bike crank arm do during riding? A crank arm transfers power from your feet through the pedals into the drivetrain to move the bike forward. - The 170mm length gives solid leverage for climbing and sprinting - Aluminum alloy construction keeps weight low while resisting bends - Standard hole shape makes swaps simple on many common bikes - Works as a handy spare part for repairs on road or trail setups