e*thirteen Helix Race Alloy e*spec Crank Arm Set - BOSCH SX-Brose S Mag-TQ HPR50 21.5mm Offset 165mm Self Extractor Silver MFPN=01018680000 0 was designed in cooperation

0 was designed in cooperation with Wahoo Fitness to provide the ultimate combination of K-EDGE strength and Wahoo ELEMNT BOLT aerodynamic advantage

And at the same time due to its low weight of 60 grams it guarantees twinkle toed rides

For Gossamer - use original FSA bolts and spacers

Forged AL-7075

e*thirteen Helix Race Alloy e*spec Crank Arm Set - BOSCH SX-Brose S Mag-TQ HPR50 21.5mm Offset 165mm Self Extractor Silver MFPN=01018680000 0 was designed in cooperatione*thirteen Helix Race Alloy e*spec Crank Arm Set BOSCH SX Brose S Mag TQ HPR50 21. 5mm Offset 165mm with Self Extractor Silver. 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