15+ Years of Performance Parts, Tuning & Installation

JDMuscle [22-26 WRX] Rear Diffuser V1 | Paint Matched / Gloss Black / Cherry Red

Backed by real installs and tuning experience at FAST of West Chester

Awaiting stock, shipping soon

Color Crystal Black Silica (D4S) Cherry Red (207C) World Rally Blue Pearl (K7X) Ice Silver Metallic (G1U) Sapphire Blue (WCH) Magnetite Gray Metallic (P8Y) Ignition Red (DCK) Ceramic White (M6Y) Solar Orange Pearl (WCL)

Everyday Low Price:

$219.00

$219.00 ~~$349.00~~ You Save $130.00!

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Why FAST of West Chester

We don’t just sell parts — we install, tune, and push them to the limit
Fast shipping so you’re not stuck waiting mid-build
Talk to actual builders, not scripted support reps

If it’s on our site, it’s because we’d run it ourselves.

The FAST WC Difference

Up to 37% off

We solved the notorious 'diaper' looking rear bumper with..... another diaper? Trust me, this is a nice one :) Finished in either your factory paint code or the Cherry Red, the v1 rear diffuser is a game changer to balance out the look on the rear bumper for your 22+ WRX.

Introducing the JDMuscle 22+ WRX Rear Diffuser V1, the perfect upgrade for enthusiasts looking to add a sporty touch to their 2022+ Subaru WRX. This rear diffuser is crafted with high-quality ABS material, making it lightweight, durable, and resistant to damage from daily use.

Available in three stunning finishes, including OEM paint matched, Gloss Black, and Cherry Red, this rear diffuser provides a sleek and stylish appearance that complements the lines of the 2022+ Subaru WRX. The OEM paint-matched option ensures seamless integration with your vehicle's factory paint color, while the Gloss Black and Cherry Red options add a bold and eye-catching contrast.

Designed with perfect fitment in mind, the JDMuscle Rear Diffuser V1 is easy to install and requires no modifications, making it a hassle-free upgrade that you can install in your own garage. Its aerodynamic design improves the vehicle's handling and adds an aggressive touch to the rear-end of your WRX.

Quick Specs:

Hardware included
Paint matched, Gloss black, or finished in the iconic JDM STI Cherry Red

Upgrade Your 2022-2024 WRX with a Sleek Rear Diffuser from JDMuscle

Looking to upgrade the look and performance of your 2022-2024 Subaru WRX? Consider adding an aggressive rear diffuser from JDMuscle. As experts in WRX aftermarket parts, JDMuscle offers top-quality diffusers to give your ride a bold, motorsport-inspired appearance.

Looking for turbochargers for a 2022 Subaru WRX or 2022+ Subaru WRX aftermarket parts? Contact JDMuscle for more information.

How Rear Diffusers Improve Performance

A rear diffuser optimizes airflow underneath your WRX for increased downforce and stability. It smooths and accelerates air exiting from under the car, reducing turbulence and drag for improved aerodynamics. A good diffuser, like JDMuscle's, will enhance high-speed handling.

Shop Rear Diffusers for the Latest WRX Models

JDMuscle has diffusers ready to fit 2022-2024 WRX models. Their diffusers come pre-painted in your choice of gloss black or cherry red. For other Subaru aftermarket parts, browse JDMuscle's selection of intakes, turbochargers, suspensions, and more for your 2022 or 2023 WRX.

Don’t miss out on our 2022+ Subaru WRX suspensions. With a rear diffuser from the Subaru experts at JDMuscle, you can give your ride an aggressive stance and improved performance. Contact us and shop for parts to customize your 2022-2024 WRX.

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Backed by real-world installs
FAST WC Team Approved

JDMuscle [22-26 WRX] Rear Diffuser V1 | Paint Matched / Gloss Black / Cherry Red

$219.00

Why Drivers Choose FAST of West Chester

I can't recommend this place enough. Being able to trust a shop in the performance world is big. The 2hr drive to get there, is worth knowing the job will be done right. Very happy to have found this shop, to
support my builds going forward.

Donald Wojnar
I recently had the pleasure of working with FAST of West Chester for some performance upgrades on my 2022 WRX, and the experience was nothing short of exceptional. I opted for a Borla S-Type exhaust and Cygnus Coilovers, and the team at FAST nailed the installation, fitment, and setup to a T.

Adam Cranston
The team at FAST are excellence in every way. First, I consulted with Dave on mods for my HPDE track car. He listened and advised me on the best parts & mods to achieve my goals. He was patient & gave me space to research the options presented & worked with me through several changes before we built. Second, the build execution was flawless, proper heat shielding, bracing and poly everywhere. All components worked as advertised.

Bryce Budd
This place has been my go to shop for all things Subaru. From simple service to performance parts and tuning, they have been top notch.

William Brunell
Excellent shop. They installed a Cobb Stage 2 DP and Whiteline Sway bars and end links on my 2013 WRX. The work was done right and clean. The estimate was accurate. They were very knowledgeable, friendly and gave me the straight scoop on exactly what I was getting for the money
and what I needed to get where I want to be with it. I'd recommend them
to any car enthusiast.

Devin Greco

Real Answers From Real Builders

We install and test many of the parts we sell — so you’re getting real-world answers, not guesses.

Does it come with a warranty?

Most products we carry include a manufacturer warranty. Since we work with top performance brands, warranty coverage can vary by product. If you have questions about a specific item, reach out — we’re happy to help.

Do you offer installation help or advice?

Yes — we don’t just sell parts, we install and tune them too. FAST of West Chester is a real performance shop, and we’ve worked hands-on with many of the products we carry. If you have questions about fitment, installs, or building your setup, our team can point you in the right direction.

How fast is shipping?

Many of our products ship the same day or next business day, depending on availability. We work hard to get parts out fast so you can get your build moving without delays.

What’s your return policy?

Returns for exchange or refund are accepted within 30 days of receiving your order. Items must be in new, unused condition and in original packaging. If you have any questions, our team will help make the process easy.

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