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Ships within 48 hours · Estimated delivery Oct 30 - Nov 4
Aluminum blocks out the heat and provides shade
enhancing efficiency
Ships Partially Assembled
This series is appropriate for extended periods of time in extreme cold weather
or fading after riding all summer long
EXHAUST VALVE SPRING YELLOW Model_RZR Pro R Aluminum blocks out the heatPolaris 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
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