MTX Part Synthetic

Castrol MTX Part Synthetic motorcycle transmission oil is a high performance transmission oil designed for two stroke motorcycle transmissions, in both road, off-road and racing applications.


Castrol MTX Part Synthetic is a two stroke motorcycle transmission oil and is recommended for the transmissions of two stroke models of Aprila, Cagiva, Honda, Kawasaki, Suzuki, Vespa, and Yamaha with separate transmission cases. It is also suitable for certain Harley Davidson motorcycle transmissions and final drives.


  • Synthetic based oil designed to enhance the performance of the latest generation of on and off-road motorcycles.
  • Superior viscometric properties for reduced noise emission from the gearbox.
  • Smooth clutch engagement and good shiftability.
  • Outstanding film strength for extended life of transmission components.
  • Superior anti-fade performance and protection of clutch plate components


  • SAE 75W-80, 10W-30
  • API Service Classification GL-4