The Full valve box Rotax EVO20 is an original manufacturer part designed for motors Rotax from 2020. It ensures optimum intake management of the air/fuel mixture and ensures proper operation and engine performance.

This version corresponds to engines equipped with the EVO 2020 configuration.

References popped view

• (30) : MAX version

• 35 : Version DD2

Engine compatibility

Compatible with engines Rotax products from 2020:

• Rotax Micro Max

• Rotax Mini Max

• Rotax Junior

• Rotax Max (Senior)

• Rotax DD2

What is the valve box for?

The valve box is an essential part of the intake system of a 2-stroke engine.

Its role is to:

• Regulate the intake of the air/fuel mixture into the engine housing

• Prevent the return of the mixture to the carburetor

• Optimize engine filling

• Improving the response to acceleration

• Stabilize operation at low and medium speed

A system of valves in good condition allows better volumetric efficiency, more frank acceleration and optimal engine efficiency.

Why choose an original part Rotax ?

• Regulatory compliance in competition Rotax

• Manufacturer reliability

• Tolerances and materials meeting official specifications

• Performance identical to approved engines

In competition Rotax, the use of original parts is essential to remain in compliance with the technical regulation.

Maintenance and control

The valve box requires regular control to ensure performance:

Recommended Audits:

• Visual inspection of slats (no crack or flash)

• Checking the flatness of the valves

• Absence of excessive day between slat and support

• Inspection of the condition of the joints

Maintenance frequency:

• Inspection at each engine overhaul

• Recommended control every 5 to 10 hours of use according to intensity

• Replacement of slats upon wear or loss of performance

Used valves can cause:

• Loss of power

• Start-up difficulty

• Unstable feedback

• Overconsumption

Benefits

• Complete set ready to assemble

• Easy and fast assembly

• Best guaranteed performance

• Ideal for preventive maintenance or replacement

Technical specifications

• Version : EVO20

• Type : Full valve box

• Exhibit: Origin Rotax

• Compatible engines produced from 2020

• Available versions: MAX and DD2

Complete valve box Rotax EVO20 is a key element in maintaining the reliability and performance of your engine in competition as well as in training.