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Ships within 48 hours · Estimated delivery Sep 3 - Sep 8
100% Surly Chromoly steel for comfort and durability
} A more aggressive tread pattern to match its increased volume
These rings fit on Shimano XT M8000 and SLX M7000 1x or 2x cranksets
Orbit UF include lower angular contact bearing and upper 5/32 inch caged bearing
e*thirteen Helix e*spec Crank Arm Set - 170mm BOSCH Gen4-Brose S Mag-TQ HPR50 Self Extractor BLK MPFN-25497 100% Surly Chromoly steel fore*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.
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