e*thirteen Helix e*spec Crank Arm Set - 170mm BOSCH Gen4-Brose S Mag-TQ HPR50 Self Extractor BLK MPFN-25497 These rings fit on Shimano

These rings fit on Shimano XT M8000 and SLX M7000 1x or 2x cranksets

100% Surly Chromoly steel for comfort and durability

8 Width 810

}Zipp 3ZERO MOTO Rim - 29" Disc Slate/Stealth 32H Rear

13t pulley wheels

e*thirteen Helix e*spec Crank Arm Set - 170mm BOSCH Gen4-Brose S Mag-TQ HPR50 Self Extractor BLK MPFN-25497 These rings fit on Shimanoe*thirteen Helix e*spec Crank Arm Set 170mm 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.