Kawasaki KX125 Combustion chambers

Chamber selection:

2003-2007

Y11 - 10.0cc Stock
Y12 -  9.3cc (95+ octane)
Y13 - 8.8cc (100+ octane)
Y14 - 8.1cc (105+ octane)

2001-2002

K11 - 9.2cc  Stock compression
K12 -  8.5cc (95+ octane)
K13 -  8.2cc (100+ octane)
K14  - 7.6cc (105+ octane)

1998-2000

H11 - 8.2cc Stock compression

H12 - 7.6cc (95+ octane)

H13  - 6.7cc (100+ octane)

H14  - 5.8cc (105+ octane)