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Honda TRX250   Kit includes
1 head body, 2 domes, 2 o-ring kits
6 acorn nuts, 6 copper washers

Order your kit from parts listed below

1986-1989 Head body (color your choice)

OS3 o-ring kit

Dome selection
K21 or W21 21.6cc
K22 or W22 20.2cc
K23 or W23 19.4cc
K24 or W24 18.3cc
K25 or W25 17.2cc


Heads colors are red, blue, black gold and aluminum
K21 or W21 domes are closest to stock compression
K2 series domes use o-ring seal max bore 68.5mm
W2 series domes use head gasket max bore 73mm
Dome modification for big bore available see FAQ




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