Odyssey Thunderbolt Cranks (Rust Proof Black)

The Thunderbolt is the new and improved descendant of the Twombolt. It is still 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. Features Proven 41-Thermal® processed 4130 chromoly Legendary lifetime replacement warranty Laboratory tested and team proven Traditional sprocket interface Updated open-ended spindle cap New wedge cluster band with greater flexibility Never-Wobble™ crank arm and spindle interface guarantee Specs Lengths: 165mm, 170mm, and 175mmDrive Side: RHD or LHDSpindle: 22mmWeight: 1 lb. 11.8 oz. (788g)US Pat. No. 7,267,030Installation Instructions »