Kibblewhite Titanium Intake and Exhaust Valves. Yamaha YFZ 450 (04-09) 450X (10-11) 450R (09-13). Now includes free valve seals.Brand new in factory packaging! Kit includes 3 intake valves (2-outer and 1-center) and 2 exhaust valves. KPMI® Recommended OEM Replacement Valves Exceeds OEM Specifications Your OEM Alternative Compatible with O. Spring Kits KPMI® has recognized a need for direct OEM replacement valves that meet KPMI® standards for race quality performance and endurance, while also being affordable.
To meet this need KPMI® has new product line selected from existing or newly developed KPMI® valves for select applications. If you look closely at the KPMI® Tensilite® titanium valves, you will notice the U. Milled one piece forged design, precision ground stems and the CrN PVD coating covering the entire valve. In cases where the OEM uses steel exhaust valves, KPMI® has elected to implement our race proven line of Black DiamondT stainless steel exhaust valves, rather than create a new line of valves made from a lesser quality material to match the OEM.Note: These valves are intended as O. Replacement valves and are completely compatible with the O. However, experienced engine builders, who are running aggressive camshafts or higher than factory RPM's may find the combination of the O. Style Valve and KPMI's Lightweight Racing Spring Kits advisable.