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JDMuscle [22-25 WRX] YDYBB Unequal Length Header - MT&CVT
JDMuscle [22-25 WRX] YDYBB Unequal Length Header - MT&CVT
JDMuscle [22-25 WRX] YDYBB Unequal Length Header - MT&CVT
JDMuscle [22-25 WRX] YDYBB Unequal Length Header - MT&CVT
JDMuscle [22-25 WRX] YDYBB Unequal Length Header - MT&CVT

JDMuscle [22-25 WRX] YDYBB Unequal Length Header - MT&CVT

JDM-WRX22-EX-HD-1

Options
Options: Single Scroll
$ 499.00
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Introducing the JDMuscle 22+ WRX YDYBB Unequal Length Header – the ultimate performance upgrade for your Subaru WRX. Crafted with precision using high-quality SS304 stainless steel construction, this header is designed to optimize exhaust flow and unleash the full potential of your vehicle. You Do You Boo Boo! If you are not about full performance and have been craving that iconic rumble sound from your childhood memories, look no further! 

Quick Specs

  • SS304 construction
  • Instant hp gain and increased torque with custom tuning
  • Iconic rich and deep rumble sound
  • The undertray vent will need to be removed for clearance due to limited room(see 7:30 of the video TMG posted for reference)
  • Gaskets included!
  • These headers can be installed without the need for a tune.
  • Headers are able to be installed with the stock exhaust!
  • Per our testing single scroll will perform better on the higher end hp while twin scroll's torque comes in a tat sooner

When paired with custom tuning, you can expect an instant horsepower gain and increased torque, taking your driving experience to a whole new level. Feel the power surge as you accelerate, and enjoy the thrilling sensation of boosted performance on the road or track.

As a cherry on top, this unequal length header delivers an iconic rich and deep rumble sound, adding a distinctive character to your WRX that will turn heads wherever you go. Embrace the growl that matches the beast under the hood and experience the symphony of power and style.

Upgrade your WRX with the JDMuscle 22+ WRX YDYBB Unequal Length Header and unlock the true potential of your vehicle, whether you're a performance enthusiast or simply looking to enhance your daily driving experience. Get ready to dominate the streets and leave a lasting impression with this high-performance upgrade. 

 

 

Comments from Anthony / Dmann Tuning who performed testing:

"Okay, for initial testing of the JDMuscle prototype we used a FBO 22 WRX on E50. The vehicle was loaded with our “standard” E50 ProTunes. The vehicle had an ETS Intake, GESi J-Pipe, ETS FMIC and a Cobb catback before installation of the header and with no other changes. No kill maps were use and this tune we used is something we would generally have as a completed tune on a customer vehicle for sake of comparison to apples to apples. The vehicle made 407/436 at the tire twice on both baseline runs. After the addition of the JDMuscle UEL header; the car produced 417/413 at the wheels. (You can see below in the pull data it was done the same day within 3 hours apart with similar weather conditions) The obvious and expected loss of low-end moving from an EL/twin scroll to a single scroll/UEL design was actually less than anticipated. I will comment on the fact the vehicle did make more power up top with no tune changes as a result of the larger manifold sizing.

After some simple tuning modifications mainly to the WG initial table to smooth back out the boost onset and attempt to bring it in sooner and adding another .5psi down low (no timing changes) netted a whopping 418/468 at the tire and mitigated the low end loss to a minimum. To be fair, with the stock manifold, the tq increase if the same tune was placed on the car would total net about the same. Concentrate more on whp above the curve and mitigation of the low-end loss. As we all know, there will always be a loss from going from a twin-scroll EL, to a single UEL. This fact is irrefutable. However, the 2.4s extra displacement and redesigned turbo (E-WG) loses are much less than the “expected loss” when compared to a FA20 with a Tomei UEL for example. Also note, the chart looks exaggerated due to the nature of the auto-scaling.

Dmann’s take: If you’re a UEL fan and you’re going to do it regardless; well, at least this one makes a touch more power. Furthermore, with some additional clever tuning, the TQ loss can almost be completely mitigated to the point of “almost” being negligible. To be honest, I can not tell a discernible difference with transient boost affects when driving the vehicle on the road and can feel a positive power increase overall.

Disclaimer: The negative effects of going UEL are still unknown since the last gen. /DMann Tuning"

At JDMuscle, we understand that fast and reliable shipping is crucial. With multiple distribution centers across the nation, most in-stock items are shipped within 1-2 business days. On average, you can expect delivery within 1-5 business days for in-stock items. Please note, however, that some products may ship directly from vendors, which could result in additional delays. Products sourced from overseas may also take longer to arrive. For more info, please visit the link below.

JDMuscle Shipping Policy

JDMuscle Return policy lasts 30 days. If 30 days have passed since your purchase, unfortunately, they can’t offer you a refund or exchange. To initiate a return, please email sales@jdmuscleusa.com.

Eligibility for Returns

✅ Items must be unused and in the same condition as when received.
✅ Items must be in their original packaging.

How to Initiate a Return

📧 Include the following details in your return request email:

  • Order Number
  • Item(s) to be returned
  • Reason for return

Important Notes:

  • Do NOT send your purchase back to the manufacturer.
  • Do NOT return any items without first setting up a return request with us.

Partial Refunds

Partial refunds may be granted under the following conditions:

  • Items not in original condition, damaged, or missing parts not due to our error.
    Items returned more than 30 days after delivery.

Restocking Fees

JDMuscle charges a 15% Restocking Fee

Cancellations

Before placing an order, please confirm availability.

Cancellations within 7 days may be subject to fees to cover third-party transaction costs.

Once the order has been processed (packaged or tracking generated), cancellations are not allowed. Eligible items may be returned instead.

Refund Process

🔄 Once your return is received and inspected, we will notify you of the refund status.
💳 Approved refunds will be credited back to your original payment method within 3-10 business days (depending on the payment provider).

Return Shipping

📦 Customers are responsible for return shipping costs unless the item is damaged, defective, or incorrect (in which case we will cover shipping both ways).

Initial shipping costs are non-refundable.

Return shipping costs will be deducted from the refund amount.

For items over $75, consider using a trackable shipping service or purchasing shipping insurance. We are not responsible for lost or damaged items during return shipping.

Return Shipping Address: Please use the address provided in the RMA/return instructions, as it may differ from the initial shipping address.

JDMuscle Return Policy

JDMuscle

JDMuscle is a U.S.-based aftermarket parts brand founded by car enthusiasts, specializing in performance and styling upgrades for Japanese vehicles like Subaru, Nissan, Toyota, and Mazda. With a massive catalog of over 350,000 parts, they offer everything from carbon fiber accessories to turbo kits—backed by knowledgeable support and a passion for the car scene.

View More JDMuscle Products

Popular FAQs

Please read our FAQs page to find out more.

Why Should I Buy JDMuscle Products from JD Customs USA?

Why Should I Buy JDMuscle Products from JD Customs USA?

JD Customs USA is a trusted destination for JDMuscle exterior upgrades, aero parts, and styling components, offering enthusiasts a reliable way to purchase authentic JDMuscle products with confidence. When you buy JDMuscle parts from JD Customs USA, you’re working with a retailer that understands modern JDM platforms, proper fitment, and the expectations of performance-driven builds.

JDMuscle is known for producing aggressive yet functional aero parts, including front lips, diffusers, side skirts, grilles, wings, and carbon fiber accessories for platforms like the Toyota GR Corolla, GR Supra, Subaru WRX, BRZ, and more. JD Customs USA ensures these products are paired with accurate vehicle fitment information and realistic install expectations.

Are JDMuscle Products from JD Customs USA Authentic?

Yes. All JDMuscle products sold by JD Customs USA are genuine and sourced directly through authorized distribution channels. This ensures proper materials, correct molding, consistent finishes, and the quality standards JDMuscle is known for.

Purchasing through JD Customs USA protects you from replica parts, poor-quality knockoffs, and misleading listings that often result in fitment issues or subpar finishes.

Does JD Customs USA Help with JDMuscle Fitment and Compatibility?

Absolutely. Aero and exterior parts require accurate vehicle selection, trim awareness, and compatibility knowledge. JD Customs USA helps customers confirm:

  • Correct model year and chassis fitment
  • Compatibility with factory bumpers or other aftermarket aero
  • Carbon fiber vs ABS material differences
  • Installation method expectations such as bolt-on vs adhesive

This guidance helps ensure your JDMuscle parts install correctly and look right the first time.

Why Buy JDMuscle Parts from JD Customs USA Instead of Other Retailers?

JD Customs USA goes beyond simply listing parts. We focus on clear product descriptions, honest install requirements, and real-world vehicle knowledge. Many fitment problems come from incorrect expectations, not the product itself.

By purchasing through JD Customs USA, customers benefit from accurate listings, platform-specific expertise, and a retailer that understands how different aero components work together visually and mechanically.

What Makes JD Customs USA the Right Choice for JDMuscle Products?

JD Customs USA is built around enthusiast culture, premium brands, and long-term customer trust. We support JDMuscle because their products deliver bold styling, modern design, and platform-specific engineering that elevate today’s performance cars.

When you buy JDMuscle products from JD Customs USA, you get:

  • Authentic JDMuscle aero and exterior components
  • Accurate vehicle-specific fitment guidance
  • Clear material and finish explanations
  • Honest installation expectations
  • Support from enthusiasts who understand JDM builds

Choosing JD Customs USA ensures your JDMuscle exterior upgrades are sourced correctly, supported properly, and matched to your build goals for a clean, aggressive, and cohesive final result.