Polaris exhaust valves open with cylinder pressure.
As you go up in elevation, cylinder pressures are reduced causing exhaust valves to open later than they should or in some cases not at all.
This can cause poor and inconsistent top end horsepower.
Changing to lighter exhaust valve springs allows the exhaust valves to open at the proper time maintaining proper top end horsepower and running consistency.
Order 2 per engine
Confirm the exact year, make, model and trim before ordering. Send us SKU SP14118 with your vehicle info and we can help verify fitment.
Shipping services and final delivery cost are shown at checkout. Returns are confirmed before an RMA is issued — parts generally need to be uninstalled, unused and in original packaging. Full policy.
