Fox Internal Bypass PartsNote: We do sell internal bypass shims (check valves). We just don't advertise them because there are a plethora to choose from. Call us at 951.737.RACE for pricing and availability.
We will need to know:
- Shape of shim (oval or rectangular)
- How many holes in the shim (usually 2 or 3)
- Length of the shim from end to end
- Width of shim
- Thickness of the shim (usually 0.008" - 0.010" - 0.012" - 0.015" - 0.020")