The Yasuni 4 range is the evolution of the line created for the 4 strokes Scooters.
- 40% less weight than original exhaust
- The fasteners and components are made of stainless steel AISI-304
- High mechanical strength
- Respects EEC noise tests (e9)
In order to fully comply to the emission strandard (e5), installation the catalytic converter (optional) is necessary, see ref.