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2017-2021 Ski-Doo MX Z TNT E-TEC 850
2003-2004 Honda TRX350TM FourTrax Rancher
Improved shoulder protection
Exclusively designed for each bike
2002-2003 Gas Gas EC 400 FSE
Starting Line Products 14-118 Exhaust Valve Springs - White tools-engine 2017-2021 Ski-Doo MX Z TNTLoad 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.
US$ 127.00
US$ 116.95
US$ 13.61
US$ 29.90
US$ 13.95
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