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The expansion chamber of a 2-stroke engine: its shape determines where the engine makes its power.
DOMA offers this expansion chamber for YAMAHA WR 200 1991-2002. On a 2-stroke, the pressure wave reflected by the pipe helps fill the cylinder: the shape of the cones decides whether the engine pulls low down, in the midrange or at the top end.
The benefits:
Dented or cracked pipe, broken mounting brackets or mixture leaking at the joints: replace it, the loss of power is often obvious.
Cross-Mania tip: Fit new gaskets and springs and check that it touches neither the frame nor the radiator.
Check the exact model and year of your bike in the list below before ordering.
Fits:
YAMAHA WR 200 2002
YAMAHA WR 200 2001
YAMAHA WR 200 2000
YAMAHA WR 200 1999
YAMAHA WR 200 1998
YAMAHA WR 200 1997
YAMAHA WR 200 1996
YAMAHA WR 200 1995
YAMAHA WR 200 1994
YAMAHA WR 200 1993
YAMAHA WR 200 1992
YAMAHA WR 200 1991
Click on your bike to see all compatible parts.
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