The Ethirteen Helix Race E-Spec Alloy Crank Arm is a high-quality, durable crank arm designed specifically for electric bikes. With a length of 160mm and made from lightweight aluminum, this crank arm is compatible with Bosch Gen 4 systems and is perfect for mountain biking. The sleek black color adds a stylish touch to your bike, while the single chainring design ensures a smooth and efficient power transmission. This set includes everything you need for a complete upgrade of your electric bike's crankset, making it an ideal choice for any serious cycling enthusiast. 100 miles or less upgraded no major damage
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