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

fiber reinforced Composite Matrix construction

The lever is designed with proven lever technologies features easy adjustment access and superior ergonomic comfort

Burly 38mm stanchions for strength and steering precision

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