Wedge Style Motor Mount Clamps - Kart Racing - Engine Mounts

Engine mount shifting or flexing on the chassis rails robs power and consistency on the track. These precision wedge-style motor mount clamps (commonly called butterfly clamps) lock your engine mount plate firmly to the frame rails, eliminating movement during hard acceleration and cornering so all the power reaches the axle.

Motor mount wedge clamps.. precision-engineered to fit a range of frame rail tube diameters and spacing configurations. Whether you’re racing competitively or tuning your kart in the garage, these clamps are a reliable and durable solution for securing your engine mount.

Each clamp is CNC-machined for a precision fit on your chassis. Available in multiple sizes to match virtually all kart frame styles. Clamping faces include integrated ridges for enhanced grip, keeping your engine mount locked in place under stress. Slight lateral adjustment is built in—ideal for compensating for minor frame irregularities like bent or crushed rails. Known as “butterfly clamps” due to their shape, these are the industry standard for performance and ease of use.

Built to meet the demands of kart racers at every level, our motor mount clamps combine precision engineering with thoughtful design details that make a difference on the track. Each motor mount clamp is sold individually.

Will these motor mount wedge clamps fit my kart chassis?

Yes — they are precision-engineered to fit a wide range of frame rail tube diameters and common spacing configurations used on today’s sprint, dirt, and shifter karts.

How do I install these butterfly motor mount clamps?

Position the wedge clamp against your engine mount plate and frame rail, insert the hardware, and tighten evenly. The integrated ridges and slight built-in lateral adjustability ensure a secure, no-slip fit even on imperfect rails.

Are these butterfly clamps suitable for competitive racing?

Absolutely. CNC-machined construction, enhanced grip ridges, and proven butterfly design make them the trusted choice for serious racers who demand maximum engine stability and consistent performance.