KTM 525 EXC | RFS | Countershaft Seal

[@ijean2478]

I don’t understand how the dome washer can cause the leak, good video!

[@jayinla228]

The dome washer is shaped like a bowl to add pressure to the sprocket. After time and with vibrations from riding it becomes flat and loses its original shape causing leaks.

[@motoadventurehaiti]

Thanks for this!