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![Valve & Spring Package, Stainless Steel, GX390 with Dual Springs, Aluminum Valve & Spring Package, Stainless Steel, GX390 with Dual Springs, Aluminum](https://cdn11.bigcommerce.com/s-dz8cplpgcq/images/stencil/290x360/products/2787700/3125339/NR_NRVALVEPACK-390D__1__62036.1737608498.jpg?c=2)
Racing Valve and Spring Package for GX390
Includes:
*Note: Use single springs for up to 6500rpm & 306 TQ cam. Use dual springs for 306 RM and larger cams.
Dual springs and/or titanium retainers are slightly higher in price. See shopping cart for price.
32mm valves may actually measure between 31.5mm and 32mm, depending on availability.
Racing Valve and Spring Package for GX390
Includes:
*Note: Use single springs for up to 6500rpm & 306 TQ cam. Use dual springs for 306 RM and larger cams.
Dual springs and/or titanium retainers are slightly higher in price. See shopping cart for price.
32mm valves may actually measure between 31.5mm and 32mm, depending on availability.