120cc Big Bore Kit

10 years in the making, this long-awaited kit rocks. Comes complete with custom *big finned* BBR aluminum cylinder, piston, rings, piston pin, clips, BBR exclusive motocross grind performance camshaft, HD valve springs, rockers with tappet adjusters, head and base gaskets. Exhaust and intake gaskets must be purchased separately.

Fitment:
1981 Honda XR100
1982 Honda XR100
1983 Honda XR100
1984 Honda XR100
1985 Honda XR100R
1986 Honda XR100R
1987 Honda XR100R
1988 Honda XR100R
1989 Honda XR100R
1990 Honda XR100R
1991 Honda XR100R
1992 Honda XR100R
1993 Honda XR100R
1994 Honda XR100R
1995 Honda XR100R
1996 Honda XR100R
1997 Honda XR100R
1998 Honda XR100R
1999 Honda XR100R
2000 Honda XR100R
2001 Honda XR100R
2002 Honda XR100R
2003 Honda XR100R
2004 Honda CRF100F
2005 Honda CRF100F
2006 Honda CRF100F
2007 Honda CRF100F
2008 Honda CRF100F
2009 Honda CRF100F
2011 Honda CRF100F
2012 Honda CRF100F
2013 Honda CRF100F