RM65  Kit includes
1 head body, 2 domes, 1 o-ring kit
4 acorn nuts, 4 copper washers

2000-2010 Head body

OS13 o-ring kit fits all years

Dome selection
K31 5.3cc
K32 4.9cc
K33 4.4cc

Note
Heads colors are red, blue, black, gold and aluminum
K31 dome is closest to stock compression and use o-ring seal, the max bore is 46.0mm
Dome modification for big bore available see FAQ