Starting Line Products 14-118 Exhaust Valve Springs - White electrical-turn-signals-components-wiring 2015-2017 Ski-Doo Expedition SE ACE

2015-2017 Ski-Doo Expedition SE ACE 900

2003-2007 Arctic Cat 400 4x4

1998 Ducati 900 Sport

Second generation controller with improved remote range

2011-2012 Polaris Sportsman Forest Tractor 500

Starting Line Products 14-118 Exhaust Valve Springs - White electrical-turn-signals-components-wiring 2015-2017 Ski-Doo Expedition SE ACELoad 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.