Seller notes

fits POL Replacement Exhaust Valves open with cylinder pressure.. As you go up in elevation, cylinder pressures are reduced causing Replacement 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 Replacement Exhaust Valve springs allows the Replacement Exhaust Valves to open at the proper time maintaining proper top end horsepower and running consistency.. Order 2 per engine. NoneLoad at .63in. ...

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