CR250   Kit includes
1 head body, 2 domes, 1 o-ring kit
6 acorn nuts, 6 copper washers
head brackets

Order your kit from parts listed below

1997-2001 Head body
2002-2004 Head body
2005-2007 Head body

OS3 o-ring kit 1997-2001, 2005-2007
OS4 o-ring kit 2002-2004

HB1 Head Brackets 1997-1999
HB2 Head Brackets 2000-2001
HB3 Head Brackets 2002-2007

Dome selection flat top piston 1997-2004
H21   17.4cc
H22   16.4cc
H23   15.5cc
H24   14.4cc

Dome selection radius top piston 2005-2007
H31   20.5cc
H32   19.6cc
H33   18.6cc
H34   17.4cc

Note
Heads colors are red, blue, black, gold and aluminum
H21 or H31 domes are closest to stock compression
H2 and H3 series domes use o-ring seal, the max bore is 68.5mm
Dome modification for big bore available see FAQ