e*thirteen Helix Race Alloy e*spec Crank Arm Set - BOSCH SX-Brose S Mag-TQ HPR50 21.5mm Offset 165mm Self Extractor BLK 20-51 Named for its dot-dash-dot-dash mounting

Named for its dot-dash-dot-dash mounting pattern

Type Non-Tubeless

Precision roller thrust bearing for smooth low-effort pressing

Non-marking Stealth® Phantom rubber outsole Activity Cycling Color Core Black / Gray Two / Solar Red Defined Color Black Gender/Age Women's Shoe Size (US) 9

and streamlined

e*thirteen Helix Race Alloy e*spec Crank Arm Set - BOSCH SX-Brose S Mag-TQ HPR50 21.5mm Offset 165mm Self Extractor BLK 20-51 Named for its dot-dash-dot-dash mountingA high performance weight optimized alternative to carbon fiber for riders who prefer alloy cranks. These 24mm ISIS interface cranks are engineered for compatibility with Bosch Gen 4 Brose S Mag TQ HPR 50 Fazua Yamaha Maxon and Specialized Brose motor systems. They come in short lengths starting at 155mm for improved pedal clearance and are tested to E Enduro standards. Color Black Crank Length (mm) 165 Pedal Spindle 9 16" Spindle Interface Type ISIS