The VERTEX Top End Gasket Kit - Big Bore is designed to replace OEM gaskets exactly for supported Yamaha applications. This performance gasket set is intended for cylinder rebuild and piston replacement work and provides components for top-end service.
The kit includes coated stainless steel head gaskets, high-performance oil seals, head and base gaskets, intake and exhaust gaskets, upper head components, and power valve gaskets. The oil seals use high-chromium-content stainless steel alloy springs for performance and corrosion resistance. The kit is made in the USA.
Distributor part number: 8100074. Manufacturer part number: 8100074. Fitment includes 2024 Yamaha WR450F, 2024 Yamaha YZ250F, 2020 Yamaha YZ250F, 2020 Yamaha YZ250FX, 2020 Yamaha WR250F, 2024 Yamaha WR250F, 2025 Yamaha YZ250F, 2021 Yamaha WR450F, 2022 Yamaha WR450F, and 2022 Yamaha YZ250F.
Features:
- Brand: VERTEX
- Product: Top End Gasket Kit - Big Bore
- Part Number: 8100074
- Gasket Construction: Includes coated stainless steel head gaskets
- Kit Contents: Includes head and base gaskets, intake and exhaust gaskets, upper head components, power valve gaskets, and high-performance oil seals
- Oil Seal Design: High-chromium-content stainless steel alloy springs for performance and corrosion resistance
- Application: Designed for cylinder rebuild and piston replacement
- Fitment: Fits select 2020, 2021, 2022, 2024, and 2025 Yamaha WR450F, YZ250F, YZ250FX, and WR250F models
- Origin: Made in the USA
Fitment:
2019 Yamaha YZ250F
2020 Yamaha WR250F
2020 Yamaha WR450F
2020 Yamaha YZ250F
2020 Yamaha YZ250FX
2021 Yamaha WR250F
2021 Yamaha WR450F
2021 Yamaha YZ250F
2021 Yamaha YZ250FX
2022 Yamaha WR250F
2022 Yamaha WR450F
2022 Yamaha YZ250F
2022 Yamaha YZ250FX
2023 Yamaha WR250F
2023 Yamaha WR450F
2023 Yamaha YZ250F
2023 Yamaha YZ250FX
2024 Yamaha WR250F
2024 Yamaha WR450F
2024 Yamaha YZ250F
2024 Yamaha YZ250FX
2025 Yamaha WR250F
2025 Yamaha YZ250F
2025 Yamaha YZ250FX