GrimmSpeed

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The GrimmSpeed BCS is designed to work with your factory computer (requires tuning). It will not reduce the life of your factory computer because it is designed to draw the same amount of power as the factory BCS but flows better and reacts faster. It plugs in and requires no splicing or solderin..
$125

GrimmSpeed introduces the most complete and easy to use 3-Port Electronic Boost Solenoid available on the market. The 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 w..
$125

GrimmSpeed introduces the most complete and easy to use 3-Port Electronic Boost Solenoid available on the market. The 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 w..
$125

GrimmSpeed introduces the most complete and easy to use 3-Port Electronic Boost Solenoid available on the market. The 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 w..
$125

GrimmSpeed introduces the most complete and easy to use 3-Port Electronic Boost Solenoid available on the market. The 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 w..
$125

 1/2"+ Thick Flanges, 14 Gauge Tubing, TRIPLE Layer Flex Joint. We are DURABILITY. Up until now all of you 06-07 WRX guys have been unable to swap in a higher flowing exhaust manifold crosspipe because Subaru decided to change up the design in those years. Well today is your day, w..
$230

 Kill that exhaust leak for GOOD! Flared Adapter Transition! (Creates a smooth transition from your 3" downpipe to your OEM midpipe) Flanged for OEM Donut Gasket Indestructible Steel CNC Laser cut construction Simple bolt on installation. (With bolts included)..
$45

 USA's Finest Downpipe. Proudly made in the USA - Design, Materials and Fabrication Innovative 3-D Contour Flange (Limited models only) FARO™ Arm Designed - We are at the leading edge of new product design hardware Flanges Fully CNC Machined (Limited models only) O2 Bungs for ..
$600

 USA's Finest Downpipe. Proudly made in the USA - Design, Materials and Fabrication Innovative 3-D Contour Flange (Limited models only) FARO™ Arm Designed - We are at the leading edge of new product design hardware Flanges Fully CNC Machined (Limited models only) O2 Bungs for ..
$600

 USA's Finest Downpipe. Proudly made in the USA - Design, Materials and Fabrication Innovative 3-D Contour Flange (Limited models only) FARO™ Arm Designed - We are at the leading edge of new product design hardware Flanges Fully CNC Machined (Limited models only) O2 Bungs for ..
$450

 USA's Finest Downpipe. Proudly made in the USA - Design, Materials and Fabrication Innovative 3-D Contour Flange (Limited models only) FARO™ Arm Designed - We are at the leading edge of new product design hardware Flanges Fully CNC Machined (Limited models only) O2 Bungs for ..
$500

 Do you know what your intake manifold sits on?...a superheated boxer engine. If you don't know already, the cooler your intake air is the more HP your car will achieve. We present you the answer to this age old problem, raising the intake manifold off the engine with GrimmSpeed's™ new ..
$80

  Do you know what your intake manifold sits on?...a superheated boxer engine. If you don't know already, the cooler your intake air is the more HP your car will achieve. We present you the answer to this age old problem, raising the intake manifold off the engine with GrimmSp..
$90

 Adding an aftermarket Up Pipe is one of the first things you should do to your Subaru. Arguably one of the best $/HP ratios. Our goal was to make a premium heavy duty Up Pipe for you. Design We designed this Up Pipe using our in-house FARO Arm along with the latest and greate..
$240

 Design We designed this Up Pipe using our in-house FARO Arm along with the latest and greatest Solidworks CAD software. This assures that we can offer you the most precise and best fitting Up Pipe on the market. In short, OEM exhaust manifold pieces are inconsisent so we used our ..
$235

 Individually Hand Painted Fits all Subaru models and Toyota FR-S (Impreza, WRX, STi, Legacy, Forester, Baja, BRZ) CNC Milled 6061 Billet Aluminum Show-off your boxer PRIDE! CNC Milled GrimmSpeed Logo Clean up that engine bay and show your boxer pride with our new Battery..
$60

 Beautifully machined accent to your engine bay! Fits all Subaru Models from '89-'11 OEM Size in diameter (Will not interfere with any hoses or intercooler piping) Factory Fit for clean install Lightweight and incredibly durable. Caution HOT! symbol on cap. ..
$65

 Beautifully machined accent to your engine bay! Fits all Subaru Models from '89-'11 OEM Size in diameter (Will not interfere with any hoses or intercooler piping) Factory Fit for clean install Lightweight and incredibly durable. Caution HOT! symbol on cap. ..
$65

 Beautifully machined accent to your engine bay! Fits all Subaru Models from '89-'11 OEM Size in diameter (Will not interfere with any hoses or intercooler piping) Factory Fit for clean install Lightweight and incredibly durable. Caution HOT! symbol on cap. ..
$65

 Beautifully machined accent to your engine bay! Fits all Subaru Models from '89-'11 OEM Size in diameter (Will not interfere with any hoses or intercooler piping) Factory Fit for clean install Lightweight and incredibly durable. Caution HOT! symbol on cap. ..
$65

 First of its kind, GrimmSpeed "Cool Touch" Oil Cap for Subaru vehicles! Cooler than Aluminum Oil Caps OEM Size in diameter (Will not interfere with any hoses or intercooler piping) Factory Fit for clean install Fits all Subaru Models from '89-'12 Sleek smooth De..
$65

 ENGINEERED TO PERFECTION. Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what you need. This cover mounts securely in place of your plastic factory cover and its asymmetric design is intended to com..
$90

 ENGINEERED TO PERFECTION. Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what you need. This cover mounts securely in place of your plastic factory cover and its asymmetric design is intended to com..
$90

 ENGINEERED TO PERFECTION. Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what you need. This cover mounts securely in place of your plastic factory cover and its asymmetric design is intended to com..
$90

 Most COMPLETE and COMPACT Air/Oil Separator on the market! Patent Pending! An Air/Oil Separator has one job, remove the oil from the engine ventilation system so the oil does not get sent through the intake system. The GrimmSpeed™ Air/Oil Separator for Subaru vehicles has ..
$315

 Most COMPLETE and COMPACT Air/Oil Separator on the market! Patent Pending! An Air/Oil Separator has one job, remove the oil from the engine ventilation system so the oil does not get sent through the intake system. The GrimmSpeed™ Air/Oil Separator for Subaru vehicles has ..
$315

Welcome to the next evolution of boost control, The GrimmSpeed Manual Boost Controller. Introducing the most refined Manual Boost Controller available on the market. GrimmSpeed has spent over a year working hand in hand with tuners across the country to devolop this MBC. This Manual Boost Control..
$110

 We are proud to present The GrimmSpeed Manual Boost Controller, the most refined manual BC available on the market today. For over a year we worked hand in hand with tuners across the country to specially develop our manual boost controller. The GrimmSpeed MBC allows you to raise OEM b..
$55

 Fits all Impreza/WRX/STi 1993-2011, Legacy 1994-2009, Forester 1998-2009 First of its kind tool that works with the 2 OEM Pulleys and GS Aftermarket Pulley Includes Plastic Washers(Won't Damage Surface) Uses large 1/2" Socket Wrench The long awaited answer to the..
$55

 Most Bracket Mounting Points Available! (4 strut tower mounting points) Fits EVO 8/9 Indestructible 12L14 CNC Laser cut construction and black powder coating Pedal feel dramatically improved (Similar feeling to SS Braided brake lines) Large diameter pressure cup..
$105

 Improve Engine Response and Faster Rev's Fits all Imprezas 93-11, Legacy 1994-2009, Forester 1998-2009 Decreases rotational mass more than 3.5lbs over OEM (You will see much faster revs as a result) Factory Fit for clean install Optimum weight to avoid misfire CELs or ..
$140

 Improve Engine Response and Faster Rev's Fits all Imprezas 93-11, Legacy 1994-2009, Forester 1998-2009 Decreases rotational mass more than 3.5lbs over OEM (You will see much faster revs as a result) Factory Fit for clean install Optimum weight to avoid misfire CELs or ..
$140

 Improve Engine Response and Faster Rev's Fits all Imprezas 93-11, Legacy 1994-2009, Forester 1998-2009 Decreases rotational mass more than 3.5lbs over OEM (You will see much faster revs as a result) Factory Fit for clean install Optimum weight to avoid misfire CELs or ..
$140