Simple but effective way to shift the torque curve to favor the low-end to mid-range band of the rev range
CNC-machined, eliminating interference problems when installing; includes gaskets and bolts
Insert spacer between cylinder and reed valve
Made in the U.S.A.
Get your Moose racing parts, tools, accesories for motocross and enduro riding at Gear2win
Fits
Manufacturer
Model
Year
YAMAHA
YZ 250
1989
YAMAHA
YZ 250
1990
YAMAHA
YZ 250
1991
YAMAHA
YZ 250
1992
YAMAHA
YZ 250
1993
YAMAHA
YZ 250
1994
YAMAHA
YZ 250
1995
YAMAHA
YZ 250
1996
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