ATV Valve Kits

Frequently Asked Questions

• What are these ATV valve kits designed for?

  These valve kits are built for 4‑stroke dirt bikes and ATVs and include replacement valves, shims, and related components to restore proper valve clearance (lash); they are not intended for low‑rpm cruisers or hydraulic‑lifter street bikes.
• How do I choose a kit for my engine head design?

  Pick a kit that matches your head’s shim-under-bucket or bucket-and-shim configuration, confirm valve and shim specifications from your service manual, and cross‑check vehicle and part numbers to avoid mismatched sealing or premature wear.
• How should terrain and weather affect my choice?

  Off‑road, dusty, or high‑heat riding accelerates valve and shim wear, so choose kits with wear‑resistant treatments and plan more frequent inspections; for mostly pavement riding, intensive off‑road features are less critical.
• What installation and maintenance points should I consider?

  Use feeler gauges to set clearances, calculate shim sizes rather than stacking shims, keep the work area clean to avoid contamination, and consider professional installation for cam removal or complex head work.
• How do performance mods or heavy use change what I should buy?

  Engines pushed to higher RPMs, temps, or compression benefit from hardened or surface‑treated valves and a wider range of shim sizes for repeated adjustments, plus more frequent inspections to maintain durability and sealing.