Lightweight 140mm Aluminum Diamond Hole Bike Crank Arm For Mid Drive EBikes Beefy Torque Durable Mountain Bike Crankset Replacement Part Easy Install Today

Single 140mm Diamond-Hole Crank Arm for Mid-Drive Ebikes
✔️ 140mm aluminum crank arm, diamond-hole, high-torque support

This lightweight 140mm crank arm is built for mid-drive e-bikes and common mountain, city, and commuting bikes. Crafted from 6061-T6 aircraft-grade aluminum, it handles high torque with a corrosion-resistant anodized finish for all-weather use.

✅ 6061-T6 aluminum alloy, 280g lightweight design
✅ Optimized for 250W-1000W+ mid-drive systems
✅ Diamond-hole design compatible with diamond interface bottom brackets
✅ Self-extracting bolts and tool-free installation in under 5 minutes with 8mm hex
✅ 35Nm CNC-machined torque spec for secure tightening
✅ Mirror-polished surface helps prevent chain drops and improve shifting

💡 What is a diamond-hole crank arm and why pick aluminum for a mid-drive e-bike?

High-strength aluminum crank arms deliver reliable power transfer in mid-drive setups for commuting and mountain riding. - Diamond-hole design compatible with diamond interface bottom brackets - 6061-T6 aluminum keeps weight down while handling high torque - 140mm length optimizes leverage for mid-drive systems - Anodized weather-resistant finish protects against corrosion ✝️