Bike Crank Arm 170mm Square Hole For Electric Bicycles Forged Alloy 6061 High Strength And Durable Mid Drive Motor Compatible Black Finish Pair Ready For Upgrades
✔️ 170mm length, L/R labeled, square-taper, 6061 forged, black finish
These crank arms are forged from 6061 alloy for strength and durability, designed for electric bicycles. They use a square-taper spindle interface and come as a pair, ready for upgrades on mid-drive motor setups.
✅ Material: Forged Alloy 6061
✅ Size: 170mm length
✅ Spindle Interface: Square taper
✅ Installation: L/R orientation with L and R markings
✅ Compatibility: For electric bicycles only
✅ Finish: Black
✅ Package: Pair (2 pieces)
💡 What is a square-taper crank arm used for on electric bikes and why is 170mm a common size? This handy explanation covers the basics.
- square-taper interface fits standard bottom brackets used on many frames
- 170mm length helps align crank with rider's leg and pedal path
- forged 6061 alloy provides strength without adding too much weight
- pairing two arms ensures symmetrical crank alignment for mid-drive systems