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. Kit includes matching intake manifold and all necessary hardware. Instant Throttle Response Up to 20% Gain in Horsepower Increased Acceleration Unsurpassed Performance and Reliability 100% Aluminum Construction 30 Day Money Back Guarantee Current Order Qty Description Price No Items Ordered Product Description Price Quantity KAW. STXR/ULTRA 1200 REED VALVE/INTAKE MANIFOLD KIT SPICKET MOUNT ONLY $1,184.24 KAW. 750/800 STAND-UP REED VALVE/INTAKE MANIFOLD KIT $721.31   Product Description Price Quantity YAM. SUPERJET 96&UP REED VALVE/INTAKE MANIFOLD KIT $721.31 YAM. GP1200R/XLT 1200 M-16 REED VALVE/INTAKE MAN. KIT FOR CARB MODELS ONLY $892.24 YAM. GP1300R M-16 REED/MANIFOLD KIT FOR O.E. INJECTOR BODY $899.44   Product Description Price Quantity S-D. 951 ALL REED VALVE/INTAKE MAN. KIT $621.86