Vintage Dirt Bike Q & A

Where can I get a reed valve set up for my 74 CR250M? Has anyone tried a roost bottle on one of these bikes and are they ahrma legal? Thanks Terry

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Terry Moody #48f
3x 74 Honda CR250M Elsinore
74 Honda XR75
73 Honda QA50
78 Yamaha YZ125E
78 Yamaha YZ250E
78 Yamaha YZ400E
79 Kawasaki KX250
79 Honda CR250R
79 Suzuki RM400
80 Honda CR125
2x 83 Honda CR480R
98 Kawasaki KX250

a Gem reed valve setup is period correct but rare to find - you also need to modify the piston and barrel to match. Best of luck looking for one.

Actually while I think of it a friend of mine had another type of reed valve that is supposed to fit - PM me and I will send you his email address?

regards

Rossco

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1974 Yamaha YZ360B
1977 Suzuki RM370B
1980 Honda CR250RA

Boost bottles are not AHRMA legal. Reeds are legal in Age and Sportsman classes. I had a Kleem reed setup on mine for a little while but then went and built my own from a couple billets of aluminum and a buddys vertical mill.

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Those who can make you believe absurdities can make you commit atrocities.

Loren Davis
51y

mossbarger still make one it fits straight on no need for piston mod and it stops the bogging down or running on and gives good bottom end power