ATHENA Exhaust Gasket O-ring Ø49.00 x 3 mm for KAWASAKI KX 250, KX 500 1985-2004

On KAWASAKI KX 250, KX 500 from 1985 to 2004, the ATHENA M753004900094 exhaust gasket fits in place of the original part. At the junction between the engine and the exhaust, this gasket has to cope with very hot gases and vibration. Crushed or hardened, it lets gases escape: noise, spitting and loss of power.

Key features

• FKM (Viton) O-ring, which handles heat far better than standard nitrile rubber (NBR).

Specifications

• Brand: ATHENA
• Manufacturer part number: M753004900094
• EAN code: 8051757004140
• Material: FKM (Viton)
• Engine: 2-stroke

When to replace it?

• Black or oily marks at the exhaust outlet.
• Spitting, a leaking noise at idle, backfiring on deceleration.
• Gasket crushed, brittle or burnt on removal.

Every time the header pipe or expansion chamber is removed, and as soon as a leak appears.

Fitting tips

1. Clean the gasket seat on both the engine side and the exhaust side.
2. Fit the O-ring in its groove without twisting it; a little high-temperature grease makes it easier to push the parts together.
3. Offer up the exhaust without forcing it, fit all the fasteners, then tighten progressively.
4. Warm the engine up, let it cool down and check the tightness again.

Why ATHENA?

Founded in 1973 near Vicenza, Athena is an Italian engine gasket specialist that has made its gaskets on its own production lines since day one, as well as a renowned manufacturer of pistons and cylinder kits. The brand supplies original equipment to manufacturers such as KTM, Ducati, Fantic, Piaggio and Triumph, and is a partner of the MXGP motocross world championship.

Spare parts and items to plan

• Top-end gasket kit : ATHENA · CENTAURO
• Spark plug : NGK 3430 · NGK 3530

Frequently asked questions

Can I reuse the old gasket?
No: it crushes and deforms as it heats up. A new gasket costs little and prevents a leak.

Compatibility

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

Fits:
KAWASAKI KX 250 1986
KAWASAKI KX 250 1985
KAWASAKI KX 500 2004
KAWASAKI KX 500 2003
KAWASAKI KX 500 2002
KAWASAKI KX 500 2001
KAWASAKI KX 500 2000
KAWASAKI KX 500 1985