e*thirteen Helix Race Alloy e*spec Crank Arm Set - Specialized M30 SL1.1 14mm Offset 165mm Self Extractor BLK Total Volume-70 Flat Protection Tread and SidewallTPI

Flat Protection Tread and SidewallTPI 60Color Black/TanDefined Color TanISO Width (mm) 64ISO Diameter 584 / 650b / 27

Material Aluminum SHIS Upper ZS44/28

Freehub Compatibility Onyx Freehub Body Shimano Micro Spline

Includes an alloy spider and lockring

e*thirteen Helix Race Alloy e*spec Crank Arm Set - Specialized M30 SL1.1 14mm Offset 165mm Self Extractor BLK Total Volume-70 Flat Protection Tread and SidewallTPIe*thirteen Helix Race Alloy e*spec Crank Arm Set for Specialized M30 SL1. 1 14mm 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