X

Subscribe to our Newsletter!

Catalog

Cranks / Thunderbolt

Current Colors

  • Rustproof Black

Buy Now

Support your local shop or favorite mailorder to upgrade your whip. Find a dealer near you →

 

Thunderbolt

Make sure to check out our new Thunderbolt+ which includes a Mid BB!

The Thunderbolt is the new and improved descendent 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-ThermalĀ® processing and heat-treatment system, fatigue life has been increased by a massive margin.

Features

  • Laboratory tested and team proven
  • Updated open-ended spindle cap
  • New wedge cluster band with greater flexibility
  • Never-Wobble™ crank arm and spindle interface guarantee
  • 41-ThermalĀ® lifetime replacement warranty against bending, cracking and breaking

Specs

  • Traditional sprocket interface
  • 22mm spindle
  • 165mm, 170mm, 175mm or 180mm
  • RHD or LHD
  • 1 lb. 11.8 oz. (788g)
  • US Pat. No. 7,267,030

Video

Click HERE to learn more about the Stampy test.