Helix R e*spec AL Crank Arm Set - 155mm BOSCH Gen4-Brose S Mag-TQ HPR50 Self Extractor Bronze MFPN=11.4015.354.020 Aero utilizes stronger advanced aluminum

Aero utilizes stronger advanced aluminum alloy

Tooth Count 38 Ring Position/Type Chain Retaining Single Ring Drivetrain Speeds 11 Drivetrain Speeds 12 Chainring BCD 104 Color Black Defined Color Black Material Aluminum

AxCad system provides no-magnet cadence data

BCD Direct Mount Narrow-Wide Design X-Sync 2 Speed 12 Teeth 36 Chainring Comp

Kryptonite Keeper Folding Locks provide easy to carry reliable protection for moderate theft protection

Helix R e*spec AL Crank Arm Set - 155mm BOSCH Gen4-Brose S Mag-TQ HPR50 Self Extractor Bronze MFPN=11.4015.354.020 Aero utilizes stronger advanced aluminumA 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 Enduro standards. Color Bronze Crank Length (mm) 155 Pedal Spindle 9 16" Spindle Interface Type ISIS