Our JL Performance Exhaust valves kit comes in a set of eight. Made of CNC forged stainless steel. The CNC process eliminates any imperfections from the forging. The Hard chrome plating reduces wear and improves reliability. Excellent for hi-performance or racing applications such as supercharged & turbocharged engines. These valves are stronger & lighter than the stock valves.
They are made from high grade, one piece, forged Inclonel alloy, fully CNC machined, and have a hard chrome treatment as well as hard tips. These exhaust valves for Yamaha are excellent for those looking to rebuild the cylinder head, or replacing bent valves, and wanting a high-power performance engine. Inconel is an alloy that cope well with very high temperatures, such as the temperatures exhaust valve are subjected to and attain, especially since, unlike intake valves, there is no fuel that goes through them and would be able to cool them down. Fits all Yamaha 1.8L FZR, FZS, FX SHO, and FX waverunner watercrafts.