Skip to product information
1 of 7

GrimmSpeed Boost Solenoid - WRX 2006-2007 - STI 2004-2007 - Forester XT 2004-2008

GrimmSpeed Boost Solenoid - WRX 2006-2007 - STI 2004-2007 - Forester XT 2004-2008

SKU: GRIM-057002
Regular price $129.00 USD
Regular price Sale price $129.00 USD
Sale Sold out

*** Electronics have a no return policy. Please ensure proper fitment before purchasing. *** 

GrimmSpeed introduces the most complete and easy to use 3-port electronic boost solenoid available on the market. This GrimmSpeed aftermarket boost controller allows you to raise the OEM boost levels in a quick and efficient manner. If you try to raise the boost on the weak OEM boost solenoid it will start to become unpredictable and unable to maintain proper and safe boost levels. Using this solenoid you are able to spool your turbo quicker and maintain a rock solid boost level. GrimmSpeed has made this solenoid to withstand up to 120 PSI.

Revolutionizing the Subaru boost solenoid market, GrimmSpeed has created model-specific install brackets that allow you to directly install the GrimmSpeed Boost Solenoid onto your Subaru for a factory fit. No more zip-tying! GrimmSpeed has given you the factory fitment that you have been waiting for. 


Staying with the OEM fitment theme, the Boost Solenoid uses a Subaru-style wiring harness so you can simply unplug your OEM solenoid and plug in the GrimmSpeed unit. No more cutting the OEM wiring and crimping wires together!


Also new to the Subaru boost solenoid market, GrimmSpeed has used ultra low-profile hose fittings to keep the unit as small and clean as possible. The hose fittings are nickel-plated brass so you don't have to worry about them snapping off like the plastic hose fittings!



  • Direct Plug and Play Into OEM Wiring
  • Completely Custom-Made Valve
  • Users Can Use AN Fittings with the Solenoid
  • Mounting Bracket Directly Bolts Into Factory Location
  • Low-Profile Brass Hose Fittings
  • Compact Size
  • Designed by GrimmSpeed to Work with the OEM Subaru ECU (requires tuning)
  • Built to Handle the Vibrations and Temperatures of your Engine Bay
  • Mounting Bracket, Hardware, and Plug-And-Play Harness Included
  • Allows You to Raise the Factory Boost Levels and Reach Full Boost Sooner
  • Adds More Response and Control
  • Industry-Leading Response and Flow
  • Durable Nickel-Plated Brass Fittings
View full details

Collapsible content

What's in the Box

Warranty Information


RalliTEK branded products are warranted to the original owner against manufacturing defects in materials and workmanship for the lifetime of the product.

If a RalliTEK branded product covered by this warranty fails due to a manufacturing defect we will repair the product, without charge, or replace it at our discretion. This policy covers only original, unaltered, and unmodified materials and workmanship. This warranty does not cover damage caused by incorrect installation, accident, improper care, negligence, normal wear and tear, or the natural breakdown of colors and materials over extended time and use. Damage not covered under warranty may be repaired for a reasonable rate and a fee will be charged for return shipping.

For warranty evaluation, please contact RalliTEK Customer Service at (503) 619.0055 or to obtain a return authorization. Once this step has been completed, your product must be returned directly to the RalliTEK Warranty Department, 13339 NE Airport Way, Suite 500, Portland, OR 97230. All shipping to the Warranty Department must be pre-paid and insured. RalliTEK will not be liable for damaged or lost inbound packages.

      NOTThis warranty is only available within the United States or Canada

  • This warranty gives you specific legal rights; you may have other rights, which vary from state to state.
  • This warranty does not cover products sold by RalliTEK that are not RalliTEK branded products.

The RalliTEK website sells discontinued, special markup, and slightly blemished products at significant discounts as 'factory seconds' products. This warranty does not automatically cover products purchased as factory seconds. RalliTEK reserves the right to determine if any warranty applies on a case-by-case basis for factory second parts. If approved, the RalliTEK Warranty Department may repair factory second products for a reasonable charge and applicable shipping charges.


Non-RalliTEK branded products do not have any written or implied warranties. Products on are sold with the warranty applied directly from the manufacturer. The customer must contact the product brand manufacturer for any warranty details. All products sold by RalliTEK are intended for off-road and/or race use only, as suggested by the manufacturer, and should be installed and set up by professional service centers only. RalliTEK is not responsible for any product failure or failure due to installation. Should a warranty claim arise, the customer and the manufacturer will handle all warranty issues directly.

There is no warranty on high-performance or race-related parts due to the nature of usage.

No payment or reimbursement shall be made for installation, removal, transportation, or other charges. The remedies outlined in this instrument are exclusive and the liability of RalliTEK with respect to any sale shall not exceed the price of the product on which the liability is based.


Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. RalliTEK shall not, in any case, be liable for special, incidental, consequential, indirect, or other similar damages arising from any breach of these warranties even if RalliTEK or its agent has been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you. This warranty is governed by the laws of the State of Oregon.

Installation Instructions


Subaru Impreza WRX WRX TR - 2006
Subaru Impreza WRX WRX TR - 2007
Subaru Forester 2.5 XT - 2004
Subaru Forester 2.5 XT - 2005
Subaru Forester 2.5 XT Limited - 2006
Subaru Forester 2.5 XT Limited - 2007
Subaru Forester Sports 2.5 XT - 2007
Subaru Forester Sports 2.5 XT - 2008
Subaru Impreza WRX Base - 2006
Subaru Impreza WRX Base - 2007
Subaru Impreza WRX STI Base - 2004
Subaru Impreza WRX STI Base - 2005
Subaru Impreza WRX STI Base - 2006
Subaru Impreza WRX STI Base - 2007