Each ring set is for one piston.
Honda TRX400EX Sportrax 2008
Honda TRX400EX Sportrax 2007-2008
Honda TRX400EX Sportrax 2006-2007
Honda TRX400EX Sportrax 2005-2006
Honda TRX400EX Sportrax 2004-2005
Honda TRX400EX Sportrax 2003-2004
Honda TRX400EX Sportrax 2002-2003
Honda TRX400EX Sportrax 2001-2002
Honda TRX400EX Sportrax 2000-2001
Honda TRX400EX Sportrax 1999
Honda TRX400EX Sportrax 1999-2000
Honda TRX400X 2012-2014
Honda TRX400X 2009
Honda XR400R 1996-2004

Warning: Cancer and Reproductive Harm –
www.P65Warnings.ca.gov