e*thirteen Helix Race Alloy e*spec Crank Arm Set - DUB 12mm Offset 165mm Self Extractor BLK Valve-Presta Durable and lightweight aluminum crank

Durable and lightweight aluminum crank arms

A reinforcement ring inside the prongs allows firm centering and maximum torque

} All purpose road race tire available in clincher and tubeless-ready versions

DuraTx layer adds durability to pads and resists tearing/catching

Optimized 7000 series forged aluminum arms

e*thirteen Helix Race Alloy e*spec Crank Arm Set - DUB 12mm Offset 165mm Self Extractor BLK Valve-Presta Durable and lightweight aluminum cranke*thirteen Helix Race Alloy e*spec Crank Arm Set DUB 12mm Offset 165mm with Self Extractor Black. A 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