The Twombolt is one of the most technically advanced crank designs on the market. 5 years of continuous development and refinement have allowed us to arrive at one of the strongest BMX crank designs available while still being exceptionally light. Simple one bolt installation via a unique multi-patented 2-piece crank arm design. New wedge cluster assembly with elastic retainer band. Legendary 41-Thermal® lifetime guarantee. US Pat. Nos. 7,267,030, 7,523,684, 7,523,685, and/or 7,770,492

• Updated mating arm lug for improved fit and increased durability.
• All-new cluster design that optimizes the arm’s interface, simplifies assembly, and makes use of a durable AND replaceable elastic retainer band.
• Greatly improved overall function and performance proven both in the lab and during extensive long-term riding.
• Hollow 22mm spindle
• 175mm Arms
• Left or Right Hand Drive
• Integrated 15/16″ sprocket shoulder
• 41-Thermal® processed 4130 chromoly
• 2 lbs. 2.5 oz. / 978g (with Mid BB). 1 lb. 13.5 oz. / 836g (without BB).