e*thirteen Helix Race Alloy e*spec Crank Arm Set - BOSCH Gen4-Brose S Mag-TQ HPR50 26.5mm Offset 160mm Self Extractor BLK Model=Broc v2 BMX Stem }Shimano Saint BB80B 68/73mm Hollowtech

}Shimano Saint BB80B 68/73mm Hollowtech II English Bottom Bracket

Additional springs sold separately to fine-tune and adjust for rider preference

9 TT (Effective) 528 Brake Type Rim Fork Material Steel Fork Type Rigid

}Shimano Dura-Ace FD-R9150 Di2 Front Derailleur Braze-on Adaptor 28

Replaceable plastic hub guard included

e*thirteen Helix Race Alloy e*spec Crank Arm Set - BOSCH Gen4-Brose S Mag-TQ HPR50 26.5mm Offset 160mm Self Extractor BLK Model=Broc v2 BMX Stem }Shimano Saint BB80B 68/73mm HollowtechHelix R e*spec AL Crank Arm Set 160mm BOSCH Gen4 Brose S Mag TQ HPR50 with Self Extractor Bronze. 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 clearance and are tested to E