BOYESEN Reed Petals for OEM reed valve for YAMAHA IT 250, IT 400, IT 425, IT 490, WR 250, YZ 250, YZ 465, YZ 490 1977-1989

BOYESEN offers these reed petals for OEM reed valve for YAMAHA IT 250, IT 400, IT 425, IT 490, WR 250, YZ 250, YZ 465, YZ 490 1977-1989. In the reed valve, thin reeds open to let the mixture in and close to stop it coming back out.

Why replace the reeds?

The benefits:

• Get the performance of a new reed valve back for little money.
• Lightweight material (often carbon) that reacts quickly.
• Quick replacement without changing the whole reed block.

Why choose BOYESEN?

Boyesen invented the dual-stage reed: a soft petal for low and mid revs, a stiffer one for top end, for more torque everywhere.

When should you replace the reeds on your YAMAHA IT 250?

A petal that no longer seals, or that is split or frayed, must be changed straight away: a piece drawn into the engine can damage it.

Specifications and fitting tips

• Manufacturer part number: BOY640

Spare parts and items to plan

• Reed block gasket : BOYESEN · ATHENA
• Spark plug : NGK 3430 · NGK 3530
• Carburettor repair kit : PROX · ALL BALLS

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
YAMAHA IT 250 1983
YAMAHA IT 250 1982
YAMAHA IT 250 1981
YAMAHA IT 250 1980
YAMAHA IT 250 1979
YAMAHA IT 250 1978
YAMAHA IT 250 1977
YAMAHA IT 400 1985
YAMAHA IT 400 1984
YAMAHA IT 400 1983
YAMAHA IT 400 1982
YAMAHA IT 400 1981
YAMAHA IT 400 1980
YAMAHA IT 400 1979
YAMAHA IT 425 1985
YAMAHA IT 425 1984
YAMAHA IT 425 1983
YAMAHA IT 425 1982
YAMAHA IT 425 1981
YAMAHA IT 425 1980
YAMAHA IT 425 1979
YAMAHA IT 490 1985
YAMAHA IT 490 1984
YAMAHA IT 490 1983
YAMAHA IT 490 1982
YAMAHA IT 490 1981
YAMAHA IT 490 1980
YAMAHA IT 490 1979
YAMAHA WR 250 1989
YAMAHA YZ 250 1989
YAMAHA YZ 250 1982
YAMAHA YZ 250 1981
YAMAHA YZ 250 1980
YAMAHA YZ 250 1979
YAMAHA YZ 465 1981
YAMAHA YZ 465 1980
YAMAHA YZ 490 1983
YAMAHA YZ 490 1982