e*thirteen Helix e*spec Crank Arm Set - 160mm BOSCH Gen4-Brose S Mag-TQ HPR50 Self Extractor BLK SW-7.2 6 (1-1/8") Front Derailleur Style

6 (1-1/8") Front Derailleur Style Side Swing Max Ring (teeth) 36

The Alpine JB utilizes an inverse tread that offers lower rolling resistance and is smoother compared to traditional knobby tires while grip and confidence remain inherent features with increased durablity

It features a fixed shim stack and a secondary shim stack that is preloaded by the external adjuster

with anti-scratch function reducing abrasions on rack

e*thirteen Helix e*spec Crank Arm Set - 160mm BOSCH Gen4-Brose S Mag-TQ HPR50 Self Extractor BLK SW-7.2 6 (1-1/8") Front Derailleur Stylee*thirteen Helix e*spec Crank Arm Set 160mm BOSCH Gen4 Brose S Mag TQ HPR50 with Self Extractor Black. Helix Core cranks provide an e bike drivetrain upgrade with high end features and aesthetics at an exceptional value. Forged for e Enduro strength with alloy self extractor bolts pedal washers and molded impact boots. 24mm ISIS interface models are compatible with Bosch Gen 4 Brose S Mag TQ Fazua Yamaha Maxon and Specialized Brose motor systems.