Wiseco Mitsu Evo 4-9 4G63 Asymmetric Skirt Bore 86.00mm - Size +.040 - CR 9.5 Piston Set 2020-polaris-rzr-900-esi9953354 9% CFM GAIN (passenger side)

9% CFM GAIN (passenger side) to your engine and provides an increase of 27

from the stitching on the seats to the roar of the engine

1981 Mercury Marquis Base 1971-1973

Quicker Shift SpeedsShift speeds can be increased by up to 20%

2014-2015 Audi R8 Base 2011-2012

Wiseco Mitsu Evo 4-9 4G63 Asymmetric Skirt Bore 86.00mm - Size +.040 - CR 9.5 Piston Set 2020-polaris-rzr-900-esi9953354 9% CFM GAIN (passenger side)Professional Series forged racing pistons from Wiseco are no expense spared pistons designed for the serious racers and builders. Packed full of custom level performance and durability features and provided with premium rings, Professional Series pistons are designed and built for use in heavy to severe duty race builds. Remove your limits with Wiseco? s Professional Series.