BOYESEN reed valve replacement Pro Series BOYESEN reed valves system for KTM EXC 250, EXC 300 1998-2001

BOYESEN offers these reed petals for KTM EXC 250, EXC 300 1998-2001. 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 KTM EXC 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

• Reed valve replacement for Boyesen reed valves system
• Model-Specific variable tension reed petals (Aerospace carbon material)
• Manufacturer part number: PSR-156

Cross-Mania tip: Fit the petals the right way round (marking facing out) without bending them, and secure the screws with threadlocker.

Also needed with this part

• Reed block gasket : BOYESEN RG-42A · BOYESEN RG-42
• Spark plug : NGK 6664 · NGK 97225

Compatibility

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

Fits:
KTM EXC 250 2001
KTM EXC 250 2000
KTM EXC 250 1999
KTM EXC 250 1998
KTM EXC 300 2001
KTM EXC 300 2000
KTM EXC 300 1999
KTM EXC 300 1998