Regular price $139.95 (USD) Reg: $ 159.99 Save: $ 0.00
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Thunderbolt CranksRHD or LHD
The Thunderbolt is the 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.
- 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
- 41-Thermal® lifetime replacement warranty against bending, cracking and breaking
- RHD or LHD
- 22 mm Spindle
- 1 lb. 11.8 oz. (788g)
- US Pat. Nos. 7,267,030