Vertex Exhaust Gasket Kit - Honda XL250R 84-87, XR250L 91-96, XR250R 81-04, Yamaha TT350 86-87, TY350 85-86, XJ650 80-83, XT350 85-00

The Vertex Exhaust Gasket Kit is a direct-replacement seal set designed for a range of Honda and Yamaha singles and parallel-twins spanning the 1980s through to the mid-2000s. It is suited to owners undertaking top-end rebuilds, exhaust system servicing, or any work that requires breaking the exhaust joint.

Vertex is a specialist supplier of engine components for powersports applications, and this kit is manufactured to fit the confirmed compatible models listed below. Replacing exhaust gaskets as a complete set at service time helps prevent leaks and protects surrounding engine components from heat and carbon fouling.

• Direct-replacement exhaust gasket kit for specified Honda and Yamaha models
• Compatible with Honda XL250R (1984–1987), XR250L (1991–1996), and XR250R (1981–2004)
• Compatible with Yamaha TT350 (1986–1987), TY350 (1985–1986), XJ650 (1980–1983), and XT350 (1985–2000)
• Supplied as a complete kit to allow full exhaust gasket replacement in a single service

Allow the engine to cool completely before beginning any exhaust-related work.
Clean all mating surfaces on the engine and exhaust pipe thoroughly, removing old gasket material and carbon deposits before fitting the new gaskets.
Replace all gaskets included in the kit at the same time rather than reusing any old seals.
Inspect exhaust studs and threads for damage or corrosion before installation; repair as needed to ensure a reliable seal.
Torque all exhaust fasteners to the manufacturer specification for the specific model — refer to the workshop manual.
Do not reuse exhaust gaskets once they have been compressed and heat-cycled.
After reassembly, start the engine and check carefully for exhaust leaks around all gasket joints before returning the bike to service.
Store unused gaskets in a cool, dry location away from direct sunlight and fuels or solvents to prevent premature degradation.