Honda 400EX 400X 87mm 416cc JE 111 Big Bore Cylinder Stage 2 Hot Cam NGK Kit

  

ADD POWER TO YOUR 400EX TOP END! Fits Honda TRX400EX and TRX400X. Years 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014. 10.8:1 JE piston kit with wrist pin and clips.

Cometic top end gasket kit. Hi Temp Valve Stem Seals. The piston uses pump or race gas.