Hours of Operation | Monday - SundayM - S | 10am - 6pm (12pm - 8pm Thursday)
The Thunderbolt is one of the most technically advanced crank designs on the market. Due to continued advancements in our legendary 41-Thermal® processing and heat-treatment system, fatigue life has been increased by a massive margin.
Lengths: 165mm, 170mm, and 175mmDrive Side: RHD or LHDSpindle: 22mmWeight: 1 lb. 11.8 oz. (788g)US Pat. No. 7,267,030