BOYESEN Reed Valve for YAMAHA YZ 125 1995-1998

The BOYESEN BOYRAD-33C reed valve block is designed for YAMAHA YZ 125 from 1995 to 1998. On a two-stroke, the reed valve block meters the mixture into the crankcase. A complete reed valve block replaces the original cage and petals in one go.

Specifications

• Brand: BOYESEN
• Manufacturer part number: BOYRAD-33C
• Weight: 300 g
• Engine: 2-stroke

Who is it for?

• Original cage damaged, or petals wearing out again and again.
• You want more pick-up and response when you open the throttle.

Good to know

Check the petals at every piston change and replace them as soon as a tip is chipped.

Fitting tips

1. Clean the gasket face of the cylinder or crankcase.
2. Fit the reed valve block with a new gasket, petals facing the engine.
3. Tighten the screws in a criss-cross pattern to the recommended torque.
4. Check the carburation and the colour of the spark plug after the first few rides.

Why BOYESEN?

Boyesen is an American brand specialising in the intake and the engine covers of two-stroke engines: reed petals, RAD Valve reed blocks, engine covers and Supercooler water pumps.

Spare parts and items to plan

• Reed block gasket : BOYESEN · V FORCE
• Reed petals : V FORCE · BOYESEN
• Spark plug : NGK 3530 · NGK 3230

Frequently asked questions

Do I need to change the jetting?
Usually not; check the colour of the spark plug after the first few rides and adjust if needed.

Compatibility

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

Fits:
YAMAHA YZ 125 1998
YAMAHA YZ 125 1997
YAMAHA YZ 125 1996
YAMAHA YZ 125 1995