The Monster is everything you've ever wanted in a Reed Valve. This valve is the door to power, open the door and unleash the Monster in your engine. New from R&D with over a decade of development the low lift, high flow sixteen port Monster M-16 power valve advances reed technology into the 21st century. Improving bottom end punch, midrange pull and overall performance. Available for Yamaha, Kawasaki & Sea-Doo watercraft.

The new Red Head from R&D will get your Ultra 150 motor running. This affordable precision cast design delivers all the performance of billet without the staggering price tag. Raising the OEM compression ratio boosts the horsepower and torque throughout the rpm range, increasing acceleration and speed. Available in 36cc and 42cc ranges and comes with all hardware. (Girdle kit hardware sold separate).

The new R&D Power Plenum for the Ultra 150 is now available. Dyno tested and championship proven Power Plenum Filters generate the maximum airflow and volume, period. Which means more horsepower, increased throttle response, acceleration and top speed. The exclusive lightweight R&D design incorporates velocity stacks and is engineered to improve air speed. The unique Pro-Lock base allows for quick removal, for those spontaneous carb adjustments. They are maintenance free, all you have to do is bolt them on and go. Immediate championship performance for your Kawasaki.

The new R&D Ultra 150 G-Force Sponson is designed and tested to deliver superior cornering, unmatched speed, and improved straight line stability. CNC machined to insure precision tolerance. It comes with all necessary hardware.

The new R&D Hydro Force Steering Nozzle for the Ultra 150 is a direct replacement nozzle. The cast aluminum lengthened design delivers a 1 mph speed gain and improves the turning radius. Allowing you to carve tighter turns with an increased positive feel.