ATHENA Top End Gasket Kit for TM RACING EN 300, MX 300 2019-2026

ATHENA offers this top-end gasket kit for TM RACING EN 300, MX 300 2019-2026. 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 ATHENA?

Athena, original-equipment supplier to KTM and Ducati from Italy, laser-cuts its gaskets from materials designed for heat, oil and coolant.

When should you replace the gaskets on your TM RACING EN 300?

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.

No manufacturer hour figure for this model. Cross-Mania guideline: compression check every 20 h in hard use and every 40 h for leisure.

Specifications and fitting tips

• Manufacturer part number: P400465600016

Spare parts and items to plan

• Piston : WOSSNER 8213D · WOSSNER 8295D
• Piston rings : VERTEX 53010007200 · VERTEX 53010007200N8
• Coolant : MOTUL 1 L · MOTUL 20 L
• 2-stroke oil : LIQUI MOLY 1 L · MOTUL 1 L

Compatibility

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

Fits:
TM RACING EN 300 2026
TM RACING EN 300 2025
TM RACING EN 300 2024
TM RACING EN 300 2023
TM RACING EN 300 2022
TM RACING EN 300 2021
TM RACING EN 300 2020
TM RACING EN 300 2019
TM RACING MX 300 2026
TM RACING MX 300 2025
TM RACING MX 300 2024
TM RACING MX 300 2023
TM RACING MX 300 2022
TM RACING MX 300 2021
TM RACING MX 300 2020
TM RACING MX 300 2019