Pay in 4 interest-free payments of $7.19 Learn more
Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
1998 Ducati 900 Sport
2003-2007 Arctic Cat 400 4x4
2015 Polaris Sportsman 850
2011-2012 Polaris Sportsman Forest Tractor 500
Second generation controller with improved remote range
Starting Line Products 14-118 Exhaust Valve Springs - White electrical-turn-signals-components-wiring 1998 Ducati 900 SportLoad at . 63in. 2. 8lbs. Load at 1in. 1. 6lbs. 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.
