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

Two Surly nylon 50mm black rim strips

Forged AL-7075

For Gossamer - use original FSA bolts and spacers

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