Forge Motorsport Adjustable Diaphragm Actuator for the Evo 9
Forge Motorsport is a pioneer in designing and manufacturing billet two-piece replacement aluminium turbo actuators. The adjustable diaphragm actuator for the Evo 9 is specifically designed for this vehicle, offering a range of features and benefits to enhance performance.
- Choice of spring pressures to suit your car
- Manufactured from 6026 grade aluminium
- Vehicle specific
- Turbo specific
- Built to order
- Machined and hand polished in the UK
- Choice of piston or diaphragm operation on most actuators
- Nomex reinforced flurosilicone diaphragms
- Laser cut stainless steel brackets (where applicable)
- Tuning and service kits available
- Made in England
- Lifetime warranty*
When fitted, the Forge Motorsport adjustable diaphragm actuator allows for fine-tuning and management of specific boost requirements, resulting in improved response and better control. The product comes with a predetermined actuator spring suitable for factory boost levels, with the option to assemble with a stronger spring for tuned vehicles. The diaphragm sealed internals are the default selection, with the option of piston sealed internals for equal performance and low maintenance.
It is important to note that Forge Motorsport cannot guarantee compatibility with all applications or the ability to increase boost output beyond the parameters set by the engine management system. Fitting of the actuator is available at our performance workshop at Progressive Parts.
In The Box:
1 x FMACEV9 Actuator
1 x Fitted Rubber Gaitor
1 x Forge Sticker
This actuator is built with a stock spring as standard. If you require the FMPACTUN spring tuning kit, you will need to select the Diaphragm Type 2, 049 option.

