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Two-stroke pistons are made from 4032 siliciumFour-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistonsBoth include 3% copper in materials for better heat resistanceAll pistons are forged using a precision...

Two-stroke pistons are made from 4032 siliciumFour-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistonsBoth include 3% copper in materials for better heat resistanceAll pistons are forged using a precision...

Made of special steel and manufactured with CNC high-precision machineryStandard stroke Yamaha -- YZ 85 -- (2003, 2014, 2012, 2010, 2013, 2002, 2016, 2008, 2007, 2005, 2011, 2009, 2006, 2015, 2017, 2004, 2018)

Made of special steel and manufactured with CNC high-precision machineryStandard stroke Yamaha -- Zuma 50 -- (1998, 1999, 2001, 2000); Yamaha -- BW 50 -- (2000, 2001, 1998, 1999)

OE or better quality Polaris -- General 1000 Deluxe EPS 4x4 -- (2020, 2021); Polaris -- Ranger 1000 EPS 4x4 -- (2020); Polaris -- Ranger Crew 1000 EPS -- (2020); Polaris -- Ranger XP 900 4x4 -- (2014, 2017, 2016, 2013, 2018, 2015, 2019); Polaris --...

OE or better quality Polaris -- General 1000 Deluxe EPS 4x4 -- (2020, 2021); Polaris -- Ranger 1000 EPS 4x4 -- (2020); Polaris -- Ranger Crew 1000 EPS -- (2020); Polaris -- Ranger XP 900 4x4 -- (2014, 2018, 2016, 2017, 2015, 2019, 2013); Polaris --...

OE or better quality Polaris -- Ace 900 XC 4x4 -- (2018, 2019, 2017); Polaris -- General 4 1000 4x4 -- (2019, 2018); Polaris -- General 4 1000 Ride Command Ed. 4x4 -- (2019); Polaris -- Ranger XP 900 4x4 -- (2018, 2017, 2015, 2019, 2013, 2014, 2016);...

OE or better quality Polaris -- RZR 4 900 EPS 4x4 -- (2015, 2014, 2016, 2018, 2017); Polaris -- Ace 900 SP -- (2016); Polaris -- General 1000 EPS 4x4 -- (2016, 2019, 2017, 2018); Polaris -- RZR XP Turbo EPS 4x4 -- (2016); Polaris -- RZR RS1 4x4 -- (2021,...

OE or better quality Kawasaki -- KVF 750 Brute Force 4x4i -- (2010, 2011, 2005, 2008, 2006, 2007, 2009, 2012); Kawasaki -- KRF 750 Teryx FI 4x4 -- (2012, 2013, 2010, 2009, 2011); Kawasaki -- KRF 750 Teryx FI 4x4 LE -- (2010, 2012, 2009, 2011); Kawasaki...

OE or better quality Kawasaki -- KFX 700 -- (2005, 2007, 2006, 2004, 2009, 2008); Kawasaki -- KRF 750 Teryx 4x4 -- (2008); Kawasaki -- KVF 650 Prairie 4x4 -- (2003, 2002); Kawasaki -- KVF 700 Prairie 4x4 -- (2006, 2004, 2005); Kawasaki -- KVF 750 Brute...

OE or better quality Kawasaki -- KRF 750 Teryx FI 4x4 LE -- (2010, 2009, 2012, 2011); Kawasaki -- KVF 750 Brute Force 4x4i -- (2012, 2008, 2005, 2010, 2011, 2009, 2006, 2007); Kawasaki -- KFX 700 -- (2004, 2009, 2005, 2007, 2006, 2008); Kawasaki -- KRF...

Increases cfm flow by approximately 80%Helps remove more air and oil from the crankcaseMade in the U.S.A.Requires the removal of the screen on S&S breather gears.