X

Subscribe to our Newsletter!

Catalog

Cranks / Thunderbolt

Colors

  • Rustproof Black

Thunderbolt

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-Thermal® 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-Thermal® 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. Nos. 7,267,030, 7,523,684, 7,523,685, and/or 7,770,492

Video

Click HERE to learn more about the Stampy test.

Thunderbolt w/Socket Drive

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-Thermal® processing and heat-treatment system, fatigue life has been increased by a massive margin.

Our Socket Drive™ interface system has been in use on our Flatware cranks since their inception, and it was only a matter of time before the system was adapted into our Thunderbolt cranks. The time has come.

In a nutshell, the Socket Drive™ system is a 9 sided interface which eliminates the need for a sprocket bolt. The sprocket itself is machined so there is no need for a sprocket insert of any kind. The two work great together.

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-Thermal® lifetime replacement warranty against [...]View More »