Moose Offroad Valve and Spring Kit - Exhaust - Yamaha - M80-83060

Stainless steel conversion. Extend the lift of the valve train and intake components by as much as 4 times over the OEM titanium parts. Designed to flow and perform better than OEM components. Created using Finite Element Analysis (F.E.A.) software, as well as proprietary camshaft analysis and spring design software to ensure consistent performance and accurate designs. Specifically designed and engineered for each application. Made in the USA.