The Thunderbolt+ is our tried and true Thunderbolt cranks and updated graphics!
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.
- 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
Lengths: 165mm, 170mm, and 175mm
Drive Side: RHD or LHD
Weight: 1 lb. 11.8 oz. (788g)
US Pat. No. 7,267,030
DOES NOT include BOTTOM BRACKET!