GrimmSpeed Catted J-Pipe - 2015+ Subaru WRX

Regular price $829.00 USD Sale price $829.00 USD Regular price $799.00 USD
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SKU: grm007103
Product Description
The GrimmSpeed J-Pipe for the 2015+ Subaru WRX is one of the first modifications that should be done on your car, as the OEM downpipe contains two very restrictive catalytic converters. Replacing these with the GrimmSpeed single high-flow unit will dramatically improve performance potential while maintaining the use of a catalytic converter. Within our complete lineup of downpipes, you have the option to add a high-flow, 300 cell catalytic converter, fully machined and contoured flanges with beautiful brushed tubes and black ceramic coating.

Whether you're racing time attack or to driving from A to B, this is the the perfect downpipe for you!

  • Subaru WRX [VAG] (2015, 2016, 2017, 2019, 2019, 2020)

NOTE: NOT CARB LEGAL. Not for street use in California.


  • 3" 16ga 304L Stainless Steel Construction
  • Proudly made in the USA - Design, Materials and Fabrication
  • FARO Arm Designed
  • 1/2" Flanges
  • O2 Bungs for factory sensor and aftermarket wideband AFR
  • Divorced Wastegate for Optimal flow
  • GrimmSpeed Gaskets Included

Extended Information

GrimmSpeed's objective is to provide you and your car a high quality product that is at a competitive price while delivering it to you in an ethical and honest way..

8 years ago, Justin Grimm developed a passion for Subaru vehicles. He enjoyed taking them apart and improving their performance. After a few years of enjoying his Subaru, Justin decided to make a career out of his passion. After realizing the niche market for Subaru aftermarket performance enhancing products, he started GrimmSpeed in his garage. As demand for the quality products grew, he opened his shop in St. Paul, MN. Justin and his dedicated team design each part inhouse and distribute them nationwide. In January 2010 GrimmSpeed moved into a 6500 SQ FT shop in Minneapolis, MN. This move has given us the opportunity to expand for years to come.

Due to the extreme weather conditions of Minnesota, GrimmSpeed has unique opportunities to test their products to ensure quality performance. This allows professionals to continuously perform research and development on all products and make revisions accordingly.

Since everyone that is a part of the GrimmSpeed family has a passion for automotive aftermarket parts, the products are not the only area of quality. GrimmSpeed has a presence on forum, blogs and various Instant Messenging accounts available to customers that have questions regarding any of their products. Justin felt that this was an important facet to GrimmSpeed, since he had has always done his own work on his cars; he understood the importance of having someone there to guide you along. The communications provided by GrimmSpeed let the customer know that there is help just a computer away.

GrimmSpeed products are used by many race teams throughout the country in various sports. Be it Rally, Road Course, Autocross, Rally cross, or Drift, our products have shown to produce winning results.

To provide faster delivery and turn around time; Kami Speed ships products out from different warehouses throughout the United States. Usually averaging 1-4 business days for processing prior to shipping.

Depending on the package, we ship using different carriers according to the item's location, content, and size.

Freight truck & international items, will require up to 7 business days to ship due to size and logistics.

All orders made after 3:00pm ET will be shipped or processed the next business day.

Unless otherwise noted as "In Stock" or exact ETA. Special Order items have an ETA of 5+ weeks.

Orders over $500 will ship insured and over $1,000 with signature and insurance in order to guarantee delivery. Orders over $1000 may not be able to ship to a different address not listed as the billing address or confirm payment address from the form of payment used. Orders with suite numbers, different billing, or apartment numbers will require signature if valued over $100.

All international orders outside of the USA are subject to duties and taxes fees per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.

Processing and logistics on in stock international orders can take up to 7 business days to process & ship.

In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail. All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to

Customer Reviews

Based on 1 review
Kaden C. (Layton, UT, US)
Great company!

Within 36 hours of my purchase they had already gotten it ready for shipping. After they sent it out it got to the FedEx facility near my residence and has been stuck there ever since. Which I understand has nothing to do with kami speed themselves. They have done a great job keeping me updated with what is going on and where my package is. So my overall experience with kami speed has been awesome, just wish there weren't so many issues with fedex 🤷‍♂️.