2015-2021 WRX & STI Mods
GrimmSpeed Titanium 1.3 Bar Radiator Cap
DESCRIPTION Upgrade your cooling system with the GrimmSpeed Titanium Radiator Cap, rated at 1.3 bar for improved thermal control and reliability. B...
View full detailsGrimmSpeed Red Pulley Cover 2015-2021 WRX
DESCRIPTION The GrimmSpeed Pulley Cover is a great way to improve the aesthetics of your engine bay by replacing the simple OEM cover that is plast...
View full detailsGrimmSpeed Intercooler BPV/BOV Gasket 2002-2007 WRX / 2004-2021 STI
5.0 / 5.0
1 Review
DESCRIPTION We all know how bad (and expensive!) the OEM Subaru Top Mount Intercooler Gaskets can be. They are one of the greatest source of leaks ...
View full detailsGrimmSpeed Downpipe to Catback 3" Gasket 2002-2026 WRX / 2004-2021 STI
DESCRIPTION Tired of the endless searching for a 3" 2 Bolt premium gasket that doesn't blow out? Most aftermarket Subaru exhaust systems need a 3" ...
View full detailsGrimmSpeed Up Pipe to Turbo Gasket 2002-2014 WRX / 2004-2021 STI
DESCRIPTION The GrimmSpeed OEM Style Gasket offers superior sealing performance with upgraded materials and construction. While most exhaust gasket...
View full detailsGrimmSpeed Street Pitch Stop Mount 2002+ WRX / 2004-2021 STI
DESCRIPTION This is the GrimmSpeed Pitch Stop Mount. This pitch stop mount is a dramatic improvement over the factory mount which is made from flex...
View full detailsGrimmSpeed Red Stealthbox Intake 2015-2021 STI
DESCRIPTION The GrimmSpeed StealthBox Cold Air Intake System is the result of countless invested hours in research and development to provide the p...
View full detailsGrimmSpeed Up-Pipe Hardware Kit 2002-2014 WRX / 2004-2021 STI
DESCRIPTION Replace your missing or damaged up-pipe hardware with the same high-quality kit included in all GrimmSpeed Up-Pipes. Designed for durab...
View full detailsGrimmSpeed Red Radiator Hose Kit 2015-2021 WRX
DESCRIPTION This is the GrimmSpeed Radiator Hose Kit. These radiator hoses feature multi-layer silicone construction that is built to last while im...
View full detailsGrimmSpeed Black Charge Pipe Kit 2015-2021 WRX
4.0 / 5.0
1 Review
DESCRIPTION The GrimmSpeed Charge Pipe Kit replaces the restrictive stock plastic unit on the FA20-powered WRX with larger diameter CNC mandrel ben...
View full detailsGrimmSpeed Race Pitch Stop Mount 2002+ WRX / 2004-2021 STI
DESCRIPTION The GrimmSpeed Race Version Pitch Stop Mount And Bushing Kit is a pivotal component in the engine/drivetrain support department especia...
View full detailsGrimmspeed Lightweight Delrin Classic Shift Knob 2002+ WRX / 2004-2021 STI
DESCRIPTION The GrimmSpeed Delrin Classic Shift Knob is a great way to add modern looks and styling to the interior of your vehicle while providing...
View full detailsGrimmspeed Lightweight Delrin Tallboy Shift Knob 2002+ WRX / 2004-2021 STI
DESCRIPTION The GrimmSpeed Lightweight Delrin Tallboy Shift Knob is a great way to add modern looks and styling to the interior of your vehicle whi...
View full detailsGrimmspeed Red Stubby Shift Knob 2002+ WRX / 2004-2021 STI
DESCRIPTION The GrimmSpeed Red Stubby Shift Knob is a great way to add modern looks and styling to the interior of your vehicle while providing the...
View full detailsGrimmSpeed Stage 1 Power Package 2015-2021 WRX
5.0 / 5.0
1 Review
DESCRIPTION The GrimmSpeed Stage 1 Power Package combines GrimmSpeed's Cold Air Intake System, as well as the GrimmSpeed 3-Port Electronic Boost Co...
View full detailsGrimmSpeed Street Transmission Mount 2002+ WRX / 2004-2021 STI
The ALL NEW GrimmSpeed Transmission Mounts are designed to lock down your Subaru's drivetrain and enhance the driving experience, while keeping cab...
View full detailsGrimmspeed Black Stubby Shift Knob 2002-2026 WRX / 2004-2021 STI
5.0 / 5.0
1 Review
DESCRIPTION The GrimmSpeed Stubby Knobs are for car enthusiasts that prefer a shift knob that's on the short and fat side, based off the design of ...
View full detailsGrimmSpeed Equal Length Headers 2015-2021 WRX
5.0 / 5.0
1 Review
DESCRIPTION The GrimmSpeed Equal Length Header has been designed to provide the turbocharger with an uninterrupted flow of exhaust gases to greatly...
View full detailsGrimmSpeed Red Strut Bar 2015-2021 WRX/STI
DESCRIPTION The GrimmSpeed Front Strut Bar for the 2015-2021 Subaru WRX/STI blends precision engineering with clean aesthetics to deliver serious p...
View full detailsGrimmspeed Black Tallboy Shift Knob 2002+ WRX / 2004-2021 STI
DESCRIPTION The GrimmSpeed Black Tallboy Shift Knobs are for car enthusiasts that prefer a shift knob that's on the tall and skinny side, based off...
View full detailsGrimmSpeed Mudflaps 2015-2021 WRX / 2015-2021 STI
DESCRIPTION Protect your 2015–2021 Subaru WRX or STI with GrimmSpeed Mudflaps, designed specifically for the VA chassis. These mudflaps shield your...
View full detailsGrimmSpeed Short Throw Shifter 2004–2021 STI
DESCRIPTION Transform your 2004–2021 STI with the GrimmSpeed Short Throw Shifter, designed to deliver sharper shifts, tighter engagement, and preci...
View full detailsGrimmSpeed Front Mount Intercooler Bumper Bar 2015-2021 WRX/STI
DESCRIPTION To help keep chassis deflection at bay and to keep any large dents out of your front fascia we’re offering the GrimmSpeed Bumper Bar as...
View full detailsGrimmSpeed Top Mount Intercooler Splitter 2015-2021 STI
DESCRIPTION This is the Grimmspeed Splitter that is available for separate purchase. This particular splitter comes with the Grimmspeed Top Mount I...
View full detailsGrimmSpeed Downpipe to Catback 3" Gasket 2x Thick 2002-2026 WRX / 2004-2021 STI
DESCRIPTION Tired of the endless searching for a 3" 2 Bolt premium gasket that doesn't blow out? Most aftermarket Subaru exhaust systems need a 3" ...
View full detailsGrimmSpeed 6-Speed Shifter Bushing Kit 2004-2021 STI
The GrimmSpeed 6-Speed STI Shifter Bushing Kit replaces the factory rubber shifter bushings with higher durability polyurethane components designed...
View full detailsGrimmSpeed Exhaust Manifold to Up Pipe Gasket 2002-2021 WRX / 2004-2021 STI
DESCRIPTION GrimmSpeed™ OEM Style Gasket, better than OEM quality at an attractive price.At GrimmSpeed™ we have worked with endless amounts of afte...
View full detailsGrimmSpeed Black Radiator Hose Kit 2015-2021 WRX
DESCRIPTION The GrimmSpeed Black Radiator Hose Kit was manufactured using a 5-ply construction system with fiber reinforcement between each layer ...
View full detailsGrimmSpeed Red Lightweight Crank Pulley 2015-2021 WRX
5.0 / 5.0
1 Review
DESCRIPTION The GrimmSpeed Red Lightweight Crank Pulley reduces the rotational mass of the system, allowing your engine to accelerate and decelerat...
View full detailsGrimmspeed Raw Stainless Steel Classic Shift Knob 2002+ WRX / 2004-2021 STI
DESCRIPTION The GrimmSpeed Raw Stainless Steel Classic Shift Knob is a great way to add looks and styling to the interior of your vehicle while pro...
View full detailsGrimmSpeed Aftermarket 3" Downpipe to OEM Catback Adapter
DESCRIPTION Exhaust leaks seem to be an all-too-common issue with most modded Subarus. The most guaranteed leak you will get is if you run an after...
View full detailsGrimmSpeed Front Mount Intercooler Kit 2015-2021 WRX
DESCRIPTION The GrimmSpeed Front Mount Intercooler Kit from GrimmSpeed has been designed with a great balance of low-pressure drop and high-tempera...
View full detailsGrimmSpeed Red Air Oil Separator 2002-2007 WRX / 2004-2021 STI
DESCRIPTION This is the GrimmSpeed Air Oil Separator. If you're familiar with modifying your vehicle, then you will know the importance of an air/o...
View full detailsGrimmSpeed Splatter Red Black V2 Bolt Oil Cap 2002-2026 WRX / 2004-2021 STI
DESCRIPTION It’s inevitable, you’ll eventually want to replace your OEM Subaru oil cap. Whether it's leaking, worn out, or just an eyesore, the Gri...
View full detailsGrimmSpeed Black Electronic Boost Control Cover 2008-2021 STI
DESCRIPTION We decided on a subtle design for this cover that mimics the “vent” styling on our matching GrimmSpeed Alternator Cover. Is it made fro...
View full detailsGrimmSpeed Red Alternator Cover 2002-2014 WRX / 2004-2021 STI
DESCRIPTION Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what ...
View full detailsIf you own a Subaru WRX STI, you know you have the perfect platform to craft a masterpiece on wheels. At WRXDaily, we understand that every enthusiast has a vision, and we’re here to offer the WRX STI mods you need to bring yours to life. With products tailored to elevate performance, enhance style, and perfect handling, our curated selection puts endless possibilities at your fingertips.
No matter what you need, our Subaru WRX STI modifications deliver quality and reliability you can trust. From high-performance upgrades to must-have Subaru STI accessories, we have everything you need to create a car that’s as bold and unique as your passion for driving. Own a 2018 WRX? We offer a variety of 2018 WRX parts designed to fit your specific model.
With WRXDaily, your Subaru becomes a true reflection of your style and ambition. Browse our selection of WRX STI mods today and start your next build!