Vacuum controlled

Vacuum-controlled flaps - easy to control, robust and motorsport-proven.
2
2" / 50.8mm

2" (50.8 mm) vacuum flap - controllable sound & reliable exhaust gas routing.

2.375
2.375" / 60.3mm

Vacuum flap 2.375" (60.3 mm) - perfect size for many conversions & standard systems.

2.5
2.5" / 63.5mm

Vacuum flap 2.5" (63.5 mm) - sporty sound & optimum flow characteristics.

2.75
2.75" / 70mm

Vacuum flap 2.75" (70 mm) - maximum power & controllable exhaust sound.

3
3" / 76mm

Vacuum-controlled 3" exhaust flap - full control over sound and exhaust gas flow.

3.5
3.5" / 89mm

Vacuum flap 3.5" (89 mm) - pressure-resistant, controllable & ideal for high-performance systems.

4
4" / 102mm

4" (102 mm) vacuum flap - maximum exhaust freedom & sporty sound.

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