Each ring set is for one piston.Wiseco rings only fit Wiseco pistons.This item fits the following vehicle applications:compatible with Honda TRX420FA Rancher AT 2009-2014compatible with Honda TRX420FA1 FourTrax Rancher 4x4 Auto DCT 2014-2016compatible with Honda TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS 2014-2016compatible with Honda TRX420FA5 FourTrax Rancher 4x4 Auto DCT IRS 2015-2016compatible with Honda TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS 2015-2016compatible with Honda TRX420FE FourTrax Rancher 4X4 ES 2007-2013compatible with Honda TRX420FE1 FourTrax Rancher 4x4 ES 2014-2016compatible with Honda TRX420FM FourTrax Rancher 4X4 2007-2013compatible with Honda TRX420FM1 FourTrax Rancher 4x4 2014-2016compatible with Honda TRX420FM2 FourTrax Rancher 4x4 with EPS 2014-2016compatible with Honda TRX420FPA Rancher AT 4x4 w/ Power Steering 2009-2014compatible with Honda TRX420FPE Rancher ES 4x4 w/ Power Steering 2009-2013compatible with Honda TRX420FPM Rancher 4x4 w/ Power Steering 2009-2013compatible with Honda TRX420TE FourTrax Rancher ES 2007-2013compatible with Honda TRX420TE1 FourTrax Rancher ES 2014-2016compatible with Honda TRX420TM FourTrax Rancher 2007-2013compatible with Honda TRX420TM1 FourTrax Rancher 2014-2016