e*thirteen Helix Race Alloy e*spec Crank Arm Set - Specialized M30 SL1.1 14mm Offset 165mm Self Extractor BLK Red/Orange Fade Endurance compound provides durable reliable

Endurance compound provides durable reliable traction

Combo adapter compatible (K13-580-BLK included)

CNC machined from 1-piece of 7000 series aluminum

or 11 tool version

e*thirteen Helix Race Alloy e*spec Crank Arm Set - Specialized M30 SL1.1 14mm Offset 165mm Self Extractor BLK Red/Orange Fade Endurance compound provides durable reliableA 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