COMETIC top-end gasket kit for KAWASAKI KX 250, KX 250 X from 2021 to 2026

COMETIC offers this top-end gasket kit for KAWASAKI KX 250, KX 250 X from 2021 to 2026. The top end is the cylinder, piston and cylinder head. When they are taken apart, the gaskets sealing them are crushed and cannot be reused.

Why buy a complete kit?

The benefits:

• Every top-end gasket in one part number: nothing is forgotten at reassembly.
• Cheaper than buying the gaskets one by one.
• New gaskets guarantee compression and sealing against water, oil and gases.

Why choose COMETIC?

Cometic has made its gaskets in the USA since 1989: Viton-coated multi-layer steel (MLS) head gasket, the technology used in racing engines.

When should you replace the gaskets on your KAWASAKI KX 250?

An oil or coolant leak, seepage around the cases or a loss of compression signal a tired gasket. Having the kit to hand means the bike is never stuck waiting for one missing gasket.

Recommended hours for a top-end rebuild (manufacturer recommendation for the Kawasaki KX 250 F / KX 450 F (four-stroke)):

• Racing: every 15 h (about 6 races).
• Leisure: no Kawasaki figure; Cross-Mania guideline: compression check at around 30 h.

Specifications and fitting tips

• Bore: 78.00 mm
• Thickness: 0.58 mm
• Material: MLS (multi-layer steel)
• Engine: 2-stroke, 4-stroke
• Made in the USA

Cross-Mania tip: Clean the mating faces carefully without scratching them and tighten to the manufacturer's torque.

Also needed with this part

• Piston : PROX · VERTEX
• 4-stroke engine oil : LIQUI MOLY 10W40 1 L · MOTUL 10W50
• Coolant : LIQUI MOLY 1 L · TWIN AIR

Compatibility

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

Fits:
KAWASAKI KX 250 2026
KAWASAKI KX 250 2025
KAWASAKI KX 250 2024
KAWASAKI KX 250 2023
KAWASAKI KX 250 2022
KAWASAKI KX 250 2021
KAWASAKI KX 250 X 2026
KAWASAKI KX 250 X 2025
KAWASAKI KX 250 X 2024
KAWASAKI KX 250 X 2023
KAWASAKI KX 250 X 2022
KAWASAKI KX 250 X 2021