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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.
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Product Specs
- Crank Type: 2pc
- Spindle Diameter: 22mm
- Includes BB: Yes
- Weight: 799g / 28.16oz