2008-ALL 1.8 VX/VXR/SHO/FZ/FZR ENGINES FITS ALL 1.8 N.A. and SUPERCHARGED: R&D offers replacement High Performance Racing Valves that are designed to be lighter, stronger, and most importantly, outflow stock O.E.M. valves. R&D valves will flow 1.5 CFM more over stock valves with R&Ds race proven back cut seats and high flow undercut stems. Each R&D Valve is a one piece forged design from only the highest grades of stainless steel with a 52 HRC hardened tip for maximum strength that has a black nitrite surface coating for superior wear hardness and reduced carbon buildup. When building any 4 stroke race engine, there should be three questions! How light, how strong, and how much more power! R&D Racing Valves answer those questions and more, as well as deliver a measurable power gain. R&D Valves are available in standard and 1mm oversize! At R&D, we have been there and tested that. There are only two choices of valves we recommend that work reliably in Yamaha engines. Either R&D O.E.M. stock Yamaha Valves, or the R&D Racing Valves. Part #612-94010 Intake Valve STD Part #612-94011 Exhaust Valve STD Oversize Valves Part #612-94012 Intake Valve +1mm Part #612-94013 Exhaust Valve +1mm Note: For Turbo Charged Applications, R&D Recommends STD Exhaust Valve Size. Features: Superior strength, Very Light, Increased airflow (1.5 CFM Gain), Improved Peak Horsepower, Black Nitride Coating for reduced friction, Precision ground, Highest Grades of stainless on the planet, Excellent upgrade for Turbo Charged Applications, Ultra easy Drop In installation, and work great in R&D CNC Ported Heads.
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