"GrimmSpeed was founded in 2006 to provide customers with innovative and highly engineered aftermarket products. In short, we are a small group of highly dedicated car nuts who work in Minneapolis, Minnesota. Our bread and butter started out anything Subaru. However, after growing our team and engineering we started developing products for: Mitsubishi, MazdaSpeed, and Hyundai markets. We are a true garage start-up and we've been lucky enough over the years to be able to turn it into exactly the business I had dreamed....probably a lot more actually. We have a wide breadth of expertise consisting of exhaust design, gaskets, pullies, phenolic spacers, porting and polishing(services that our company was actually founded on), boost controllers, and many more." - GrimmSpeed
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Subaru Impreza WRX/STI 15-18 / WRX/STI Sedan 11-14 GrimmSpeed Cat Back Exhaust System Resonated
With so many catback options available, our goal was to create a unique, refined sound in an extre..
£1,515.00 Ex Tax: £1,262.50
Subaru Impreza WRX/STI Hatchback 08-14 GrimmSpeed Cat-Back Exhaust System Non-Resonated
With so many catback exhaust options available, our goal was to create a unique, refined sound in a..
£1,406.00 Ex Tax: £1,171.67
Subaru Impreza WRX/STI Hatchback 08-14 GrimmSpeed Cat-Back Exhaust System Resonated
With so many catback exhaust options available, our goal was to create a unique, refined sound in a..
£1,413.00 Ex Tax: £1,177.50
Subaru Impreza/WRX/STI 02-07 GrimmSpeed Hood Struts
GRIMMSPEED HOOD STRUTS - SUBARU 02-07 IMPREZA/WRX/STIHigh-Lift Hood Struts. There is no substitute...
£159.00 Ex Tax: £132.50
Subaru STI 08-14 GrimmSpeed Front Mount Intercooler Kit
GRIMMSPEED FRONT MOUNT INTERCOOLER KIT - 08-14 STIMeticulous Engineering, Unparalleled Craftsmanshi..
£1,559.00 Ex Tax: £1,299.17
Subaru STI 08-21 GrimmSpeed Electronic Boost Control Cover
GRIMMSPEED ELECTRONIC BOOST CONTROL COVER - 08-21 STIGrimmSpeed engine dress-up pieces have been ex..
£60.00 Ex Tax: £50.00
Subaru WRX 02-05 GrimmSpeed Electronic Boost Control Solenoid 3 Port
GRIMMSPEED ELECTRONIC BOOST CONTROL SOLENOID 3-PORT - SUBARU 02-05 WRX The Original Direct-Fit..
£133.00 Ex Tax: £110.83
Subaru WRX 02-07 / STI 04-21 GrimmSpeed Air/Oil Separator
Most COMPLETE and COMPACT Air/Oil Separator on the market! Patent Pending!An Air/Oil Separator has ..
£335.00 Ex Tax: £279.17
Subaru WRX 02-07 / STI 04-21 GrimmSpeed Bypass Valve
GRIMMSPEED BYPASS VALVE - 02-07 WRX, 04-21 STIThe days of sacrificing performance to leaky BPVs are ..
£245.00 Ex Tax: £204.17
Subaru WRX 02-14 / STI 04-21 GrimmSpeed Alternator Cover
GRIMMSPEED ALTERNATOR COVER - SUBARU 05-09 LGT/04-13 FXT/02-14 WRX/04-21 STITired of being teased f..
£95.00 Ex Tax: £79.17
Subaru WRX 06-07 / STI 04-07 / FXT 04-08 GrimmSpeed Electronic Boost Control Solenoid 3 Port
GRIMMSPEED ELECTRONIC BOOST CONTROL SOLENOID 3-PORT - SUBARU 06-07 WRX, 04-07 STI, 04-08 FXT T..
£133.00 Ex Tax: £110.83
Subaru WRX 08-14 / 05-09 LGT / 09-13 FXT GrimmSpeed Electronic Boost Control Solenoid 3 Port
GRIMMSPEED ELECTRONIC BOOST CONTROL SOLENOID 3-PORT - SUBARU 08-14 WRX, 05-09 LGT, 9-13 FXT Th..
£129.00 Ex Tax: £107.50
Subaru WRX 08-14 GrimmSpeed Air/Oil Separator
Most COMPLETE and COMPACT Air/Oil Separator on the market! Patent Pending!An Air/Oil Separator has ..
£335.00 £310.00 Ex Tax: £258.33
Subaru WRX 2008-2014 GrimmSpeed Top Mount Intercooler Kit
GrimmSpeed Top Mount Intercooler Kit - 2008-14 Subaru WRXRaw Aluminium 090010Black 090044 FITM..
£999.99 Ex Tax: £833.33
Subaru WRX/FA20 15- GrimmSpeed Electronic Boost Control Solenoid 3 Port
GRIMMSPEED ELECTRONIC BOOST CONTROL SOLENOID 3-PORT - 2015+ WRX/FA20 An elegantly engineered ..
£170.00 £158.00 Ex Tax: £131.67
Subaru WRX/STI 02-07 / Forester XT 04-08 GrimmSpeed Catted Downpipe LHD ONLY
USA's Finest Downpipe.Proudly made in the USA - Design, Materials and FabricationInnovative 3-D Con..
£650.00 Ex Tax: £541.67
Subaru WRX/STI 02-14 GrimmSpeed Hella Horn Wiring Harness
HELLA HORN WIRING HARNESS 02-14 WRX, 04-14 STI Simple.Automotive Grade 16ga Wire - Minimal re..
£42.00 £37.00 Ex Tax: £30.83
Subaru WRX/STI 02-21 GrimmSpeed Top Mount Intercooler Kit
GRIMMSPEED TOP MOUNT INTERCOOLER KIT - SUBARU 02-07 WRX, 04-21 STI, 04-08 FXTSo, you probably alre..
£739.00 Ex Tax: £615.83
Subaru WRX/STI 02-21 GrimmSpeed Top Mount Intercooler Kit with Black Thermal Dispersant Coating
GRIMMSPEED TOP MOUNT INTERCOOLER KIT WITH BLACK THERMAL DISPERSANT COATING - SUBARU 02-07 WRX, 04-..
£819.00 Ex Tax: £682.50
Subaru WRX/STI 04-07 / WRX 02-05 / Forester XT 04-08 GrimmSpeed Intake System
GRIMMSPEED INTAKE SYSTEM - 04-07 WRX/STI, 02-05 WRX, 04-08 FORESTER XTFinally a GD intake with the..
£383.90 Ex Tax: £319.92