Set of six oversized exhaust valves. Our valves are made from one piece forged Inconel, each valve is CNC machined, features a hard chrome treatment, and has hardened tips. The CNC process eliminates any imperfections from the forging; the valve undergoes a heat-treatment to ensure proper molecular integrity and uniform grain structure throughout the valve. The hard chrome plating strengthens the valve to reduce wear and provide optimum anti-friction performance. Inconel is used for exhaust valves because Inconel alloy is very well suited for high-temperature and high-pressure environments, it is much more stable than stainless steel at high temperatures, as well as being resistant to corrosion and oxidation. These are excellent for those looking to rebuild the cylinder head, or replacing bent valves, and looking for a hi-performance or racing engine. Far superior than stock valves. Use with OEM keepers. +1mm Oversize! Made in the USA. Fits all 2004-2015 Sea-Doo 1503cc 4TEC (4 stroke) Rotax.
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