e*thirteen Helix Race Alloy e*spec Crank Arm Set - BOSCH Gen4-Brose S Mag-TQ HPR50 26.5mm Offset 165mm Self Extractor Silver MFPN=7104-05-545 Designed and optimized for chainrings

Designed and optimized for chainrings with SRAMs 3-Bolt mount style (bolts sold separately

SmartNET Silica technology delivers high rolling efficiency thanks to its natural anisotropic orientation which reduces heating while increasing elasticity to help minimize energy dissipation

and Bonus Buttons let you shift or control ANT+ devices with your thumbs

Q Factor: 143mm / Chainline: 43

6/40mm) offset 44mm travel 170mm spring type Float air brake mount disc only (PM) dropout 15x110mm Boost QR weight - color shiny black

e*thirteen Helix Race Alloy e*spec Crank Arm Set - BOSCH Gen4-Brose S Mag-TQ HPR50 26.5mm Offset 165mm Self Extractor Silver MFPN=7104-05-545 Designed and optimized for chainringse*thirteen Helix Race Alloy e*spec Crank Arm Set BOSCH Gen4 Brose S Mag TQ HPR50 26. 5mm Offset 165mm with Self Extractor Silver. 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