Upgrade the sealing and durability of your drivetrain with the PROX Countershaft Seal Kit. This kit is designed to be an improvement over OEM components, helping reduce the chance of oil seepage at the countershaft (front sprocket/output shaft) area. By replacing worn sealing and support parts together, you restore a tighter seal and improve long-term reliability—ideal for hard motocross and enduro use.
Whether you’re dealing with a persistent leak or doing preventative maintenance during a service, this complete kit makes it easier to refresh the countershaft sealing surface and keep your engine/gearbox oil where it belongs.
Key features:
✅ Designed to be an upgrade over OEM parts
✅ Complete kit includes an upgraded seal and hardened bushing
✅ Includes an O-ring, snap ring or lock washer when applicable
Benefits of use:
🔹 Helps minimize oil leaks around the countershaft/front sprocket area
🔹 More durable wear surface thanks to the hardened bushing
🔹 Convenient all-in-one kit for faster, correct installation during service
Technical specifications:
📌 Brand: PROX
📌 Vendor part number: 26.640016
📌 Application: Countershaft
📌 Unit: Kit
Why choose this product?
⭐ Built as a performance-minded alternative to standard OEM replacement parts
⭐ Complete kit approach replaces multiple critical items at once for better results
⭐ Great choice for riders who want reliable sealing under mud, pressure-washing and heavy use
