Athena Complete Gasket Kit for KTM 125 SX 2023 - Engine Rebuild and Maintenance

Athena’s Complete Engine Gasket Kits for offroad applications are engineered to meet the toughest demands of motocross, enduro, and ATV/UTV engines. Designed for full engine overhauls, this kit provides every seal and gasket needed to restore performance and reliability under the harshest conditions.

Every seal you need, in one complete kit

This Athena Engine Kit includes all essential gaskets and seals: head, base, crankcase, exhaust, valve cover, engine oil seals, valve stem seals, O-rings, and washers. Nothing is left out—each component is selected to ensure long-lasting performance in high-stress environments.

Race-developed technology for offroad performance

Athena supports top teams in MXGP, AMA Supercross, Pro Motocross, and EnduroGP. Gaskets are tested on track and refined through direct collaboration between Athena’s R&D department and race engineers. The same technology used in competition is made available to all riders.

Trusted by OEMs worldwide

Athena has long-standing partnerships with leading European and Japanese offroad manufacturers. This ensures perfect OEM compatibility, precise fitment, and consistent performance across a wide range of offroad engines.

Advanced design and total quality control

Each gasket is developed using 2D/3D modeling, Fuji Paper and Tin Testing, FEM simulations, and validated on static and dynamic test benches. Multi-layer embossing ensures uniform compression and optimal sealing. Dimensional accuracy is verified using profilometers and Virtek® systems.

All gaskets and seals included for complete engine rebuilds

Perfect fit with OEM offroad engine specifications

Built to withstand extreme and prolonged conditions

Developed with factory teams in MXGP and AMA

The Athena Complete Gasket Kit (Part Number: P400270900097) is designed specifically for the KTM 125 SX 2023 model, providing essential components for engine rebuilds and maintenance. This comprehensive kit ensures a perfect fit and reliable sealing, contributing to optimal engine performance and longevity. Crafted with precision and high-quality materials, the Athena gasket kit includes all necessary gaskets to replace worn or damaged parts during engine servicing. Whether you're performing a routine overhaul or restoring your motorcycle, this kit offers a cost-effective solution to maintain your KTM 125 SX's peak operation. Easy to install and built to meet or exceed OEM standards, this gasket kit is essential for professional mechanics and avid enthusiasts alike.

Features:

• Complete gasket set includes all necessary gaskets for engine maintenance

• Designed specifically for KTM 125 SX 2023 models for precise fit

• Manufactured with high-quality materials for durability and reliability

• Engineered to provide optimal sealing and prevent leaks

• Suitable for engine rebuilds, repairs, and routine maintenance