Left Crank Arm Set For Mountain And Road Bikes 170mm Center To Center 2 Pack With Diamond And Round Holes Replacement Left Side Only Fits Diamond Hole Shafts And Square Tapers Easy Install

170mm Left Crank Arms Set 2 Pack for Mountain Road Bikes
✔️ Steel 170mm cranks left side only diamond round holes black

These left crank arms are handy replacements for fixing up mountain bikes road bikes and other cycles when the original left side needs swapping out.

✅ Made from solid steel for strength and long life
✅ 170mm center to center with 2cm round and 1.6cm diamond holes
✅ Comes as a 2 pack for left side diamond hole shafts
✅ Easy to install on ordinary bikes folding bikes and fixed gear models

💡 What are left crank arms used for on bicycles? Left crank arms keep the pedals spinning smoothly on the drive side opposite the chainring. They fit diamond hole bottom brackets on many bike styles. Steel build handles daily rides without bending or wearing out fast. Swapping the left side only keeps both pedals at the same height for safe pedaling.