RM250  Kit includes
1 head body, 2 domes, 1 o-ring kit
6 copper washers
Head brackets 2001-2009

Order your kit from parts listed below

1996-2000 Head body
2001-2002 Head body
2003-2009 Head body

OS6 o-ring kit 1996-2000 same as OEM o-rings
OS5 o-ring kit 2001-2009 same as OEM o-rings

SB1 Head Brackets 2001-2009

Dome selection 1996-2000
S20 22.0cc
S21 20.6cc
S22 19.2cc
S23 18.2cc
S24 17.6cc

Dome selection 2001-2002
S31 17.6cc
S32 16.4cc
S33 15.5cc
S34 14.4cc

Dome selection 2003-2009
Y21 21.1cc
Y22 20.1cc
Y23 19.1cc
Y24 18.4cc

Note
Heads colors are red, blue, black, gold and aluminum
S20 domes are closest to stock compression for 1998 & 2000
S21 domes are closest to stock compression for 1996, 1997, 1999
S31 domes are closest to stock compression for 2001, 2002
Y21 domes are closest to stock compression for 2003-2009
S2 series domes the max bore is 72.mm
S3 series domes the max bore is 68.5mm
Y2 series domes the max bore is 68.5mm
Dome modification for big bore available see FAQ