2015-2021 STI

Increase horsepower and style under your hood. The PERRIN Cold Air Intake (CAI) system uses proper MAF alignment and tubing size, which are crucial...

Increase horsepower and style under your hood. The PERRIN Cold Air Intake (CAI) system uses proper MAF alignment and tubing size, which are crucial...

Boost Tubes Right off the turbo a smooth offset coupler carries the hot side air charge to a perfectly matched 2.25” boost tube. We chose 2.25" tub...

The PERRIN shift knob features a heavy weight, solid steel body that is up to two times the weight of the OEM knob. Heavy weight knobs are great fo...

The PERRIN Performance Afta MAF Hose effectively replaces the factory-fitted corrugated rubber hose between the inlet tube and air box. This part i...

AMS Performance 15-21 Subaru STI parts WRX/STI (VA) / 2022+ WRX (VB) (Manual Trans.) Carbon Fiber Shift Knob

The Invidia 2015+ WRX/STi Gemini 80mm Full Titanium Quad 101mm Tip Cat-Back Exhaust is expertly constructed from ultra-lightweight titanium for unb...

PERRIN Steering Rack Lockdown creates a more solid connection between the steering rack and chassis. This increases driver feel and communication f...

The PERRIN Trunk Handle is designed for ease of use, offering a simple solution to the issue of a flush and handleless trunk lid. The bolt-on style...

The Perrin TMIC Coupler Kit offers a sophisticated touch to your engine bay. This sturdy replacement for the factory coupler includes a 5-ply fiber...

The Perrin TMIC Coupler Kit offers a sophisticated touch to your engine bay. This sturdy replacement for the factory coupler includes a 5-ply fiber...

The Perrin TMIC Coupler Kit offers a sophisticated touch to your engine bay. This sturdy replacement for the factory coupler includes a 5-ply fiber...

The OEM BOV's tiny outlet limits the boost-venting rate and may result in leaks. The PERRIN BOV has a much larger adjustable outlet, and 1.225" inl...

The PERRIN Front Mount Intercooler Core and Beam provides a direct replacement for the limited factory top mount setup, reducing the chances of hea...

The PERRIN Turbo Heat Shield is CNC formed from 304 stainless steel. The backside of the shield is cut to fit all aftermarket downpipes. It is also...

The PERRIN Rear Shifter Bushing removes the soft rubber bushing on the back of the shifter rod. This vital connection point joins the shifter mecha...

Reduce engine oil temperatures, extend engine life, and keep your horsepower consistent with a PERRIN Oil Cooler.In racing conditions engine oil te...

Subaru's stock turbo inlet tube is prone to failure; we personally experienced two on our 2002 WRX, resulting in a noticeable decrease in performan...

Subaru's stock turbo inlet tube is prone to failure; we personally experienced two on our 2002 WRX, resulting in a noticeable decrease in performan...

In racing conditions engine oil temperature skyrockets. This causes decreased engine performance and reduces the oil's ability to properly lubricat...

The Perrin top mount intercooler provides powerful cooling capabilities for your Subaru STI, featuring durable cast aluminum end tanks and a dense ...

Gain a boost in hp and sporty style with the PERRIN Cold Air Intake system. Ensuring correct MAF alignment and tube dimensions are integral for pre...

Gain a boost in hp and sporty style with the PERRIN Cold Air Intake system. Ensuring correct MAF alignment and tube dimensions are integral for pre...