e*thirteen Helix Race Alloy e*spec Crank Arm Set - BOSCH SX-Brose S Mag-TQ HPR50 21.5mm Offset 160mm Self Extractor BLK Model-Pro N-10/11 Compatible with SRAM 1x11 and

Compatible with SRAM 1x11 and 1x12 XX1

AxCad -- no cadence magnet required

Defined Color Black PSI 65 TPI 120 Weight 630 Tire Type Clincher Tire Intended Use Mountain Color Black Tire Diameter 29" Tire Bead Folding Labeled Size 29 x 2

} Service parts for DB air and coil models

e*thirteen Helix Race Alloy e*spec Crank Arm Set - BOSCH SX-Brose S Mag-TQ HPR50 21.5mm Offset 160mm Self Extractor BLK Model-Pro N-10/11 Compatible with SRAM 1x11 ande*thirteen Helix Race Alloy e*spec Crank Arm Set BOSCH SX Brose S Mag TQ HPR50 21. 5mm Offset 160mm 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