Seller notes

Bronco Exhaust Valve YAMAHA YFZ450 YFZ450R YFZ450X Bronco offers OEM replacement valves for both ATV and UTV modelsOEM replacement valves are made of durable SUH35B heat resistant steel that also comes with fill Nitride finish for further durability and resistance to corrosionPerformance valves receive a swirl polish, smooth stem treatment, and are made of 21-4N/SUH35HT stainless steel. Performance valves are generally reserved for high performance / reving machines so these valves are forged wi...

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