e*thirteen Helix Race Alloy e*spec Crank Arm Set - BOSCH SX-Brose S Mag-TQ HPR50 21.5mm Offset 165mm Self Extractor BLK MFPN=D33XRDR-R Model Gravel Grinder Race Size

Model Gravel Grinder Race Size 700c Width 38mm Compound Vulcanized Bead Folding Type Tubeless Color Black Weight 355g

5 hrs (Low-5 lm) and up to 11 hrs (Superflash™-70 lm)

Approved for E-bike usage - Up to 75nm

An oversized bottom-bracket and chainstay area increases pedaling stiffness and drivetrain efficiency

It's been engineered it with the largest cutaway for the greatest relief channel possible remaining supportive and flat at the rear so you have a good platform for sustained seated climbs

e*thirteen Helix Race Alloy e*spec Crank Arm Set - BOSCH SX-Brose S Mag-TQ HPR50 21.5mm Offset 165mm Self Extractor BLK MFPN=D33XRDR-R Model Gravel Grinder Race SizeA 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 Black Crank Length (mm) 165 Pedal Spindle 9 16" Spindle Interface Type ISIS