Try a brand, part number or a shorter search term. We can help you find the right part.
Or browse: Air filters Spark plugs
Athena External Head O-ring 105X2 KTM SX 250 07-
In stock at our supplier. We dispatch this product within 2–5 working days.

Product description
The Athena External Head O-ring 105x2 mm is a high-quality sealing ring designed for cylinder head seals on 2-stroke KTM engines. Specially developed for KTM SX 250 models (2007–2023) and related 250/300cc applications, this ring provides a reliable seal during maintenance and repairs.
- Dimensions: O-ring 105 x 2 mm, specifically designed for the cylinder head seal of 2-stroke engines.
- Model/Part: Athena M752010500094 – 105x2 mm cylinder head O-ring.
- Application: External cylinder head seal (head seal) for 250/300cc models; compatible with KTM SX/SX-F 250/300 and related brands such as Husqvarna and Beta within the same dimensions.
- Material/Construction: Durable sealing rubber/quality ring for a reliable seal against high temperatures and pressure in the cylinder head. (designed for fast replacement during maintenance)
- MPN: JU-M752010500094
This O-ring provides a reliable solution for maintaining 2-stroke engine cylinder heads and prevents leaks around the cylinder head seal. Thanks to its 105x2 mm size, it fits as a direct replacement in the relevant KTM SX 250/300 and similar 250/300cc applications. Ideal for technicians and DIYers aiming for a precise, OEM-quality replacement during overhauls or when fixing cylinder head seal leaks.
Specifications
Manufacturer and product safety
Manufacturer
Athena S.p.A.
Via delle Albere 13
36045 Alonte (VI)
Italy
motorsport@athena.eu
Our reviews
What are your predecessors' experiences?