For more than 10 years, GrimmSpeed Top Mount Intercoolers have been the go-to for quality and performance. We have been leading the charge in Subaru aftermarket innovation, with...
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...
Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what you need.
GrimmSpeed engine dress-up pieces have been extremely popular with Subaru owners over the years, but there's always been one small piece missing: Introducing The GrimmSpeed...
Design requirements for this intake were simple: The intake must not only be safe for the engine, but perform well both with and without tuning. The intake must be able to be...
In true GrimmSpeed fashion, no corners were cut in the fabrication of each and every one of these intakes.
It's no secret that GrimmSpeed intakes feature performance and aesthetics that lead the pack.
In true GrimmSpeed fashion, no corners were cut in the fabrication of each and every one of these intakes.
The original GrimmSpeed Fender Shrouds for the 15+ chassis were SUCH a big hit that we decided to introduce a unique set for 08-14 WRX and STI owners!
Do away with the flimsy, boring factory fabric shrouds and make your engine bay stand out with the BRAND NEW GrimmSpeed Fender Shrouds for the 2015-21 WRX/STI (sold as a pair).
Clean up that engine bay and show your GrimmSpeed pride with our newly-designed Subaru Battery Tiedown.
Your factory crank pulley is responsible for transferring energy from your crankshaft to your water pump, a/c compressor and alternator.
In our opinion, the OEM Subaru crank pulley has been a cause for concern ever since its original design. It is relatively heavy, susceptible to catastrophic failure, and quite...
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...
Part of our job is identifying OE Subaru parts that could be improved upon and creating the best aftermarket versions of them. The pieces that make up your factory intake are a...
Some OE parts look passable and others miss the mark. In the case of the factory post MAF hose, the quicker you can get it out of your bay, the better. We've now got you covered...
Some OE parts look passable and others miss the mark. In the case of the factory post MAF hose, the quicker you can get it out of your bay, the better. We've now got you covered...
Some OE parts look passable and others miss the mark. In the case of the factory post MAF hose, the quicker you can get it out of your bay, the better. We've now got you covered...
As with other FMIC kits, the GrimmSpeed Front Mount Intercooler requires the removal of your factory bumper beam in order to fit its massive core.
Tired of being teased for your boring engine bay? Did you replace your stock TMIC with one that doesn't facilitate the use of the stock engine cover?
Your Subaru's cooling system is only as good as its weakest link, commonly that's the old, dry-rotted OEM coolant hoses. As your Subaru ages and the integrity of those hoses...
Your Subaru's cooling system is only as good as its weakest link, commonly that's the old, dry-rotted OEM coolant hoses. As your Subaru ages and the integrity of those hoses...
Your Subaru's cooling system is only as good as its weakest link, commonly that's the old, dry-rotted OEM coolant hoses. As your Subaru ages and the integrity of those hoses...
Your Subaru's cooling system is only as good as its weakest link, commonly that's the old, dry-rotted OEM coolant hoses. As your Subaru ages and the integrity of those hoses...