SKU: 28151660172

Invidia Down Pipe/J Pipe w/300 CPSI Cat Subaru WRX VA 15-21 (Manual)

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Description

Invidia Down Pipe/J Pipe w/300 CPSI Cat Subaru WRX VA 15-21 (Manual)New for 2024: Revised design with 300CPSI catalytic converter to suit stricter EPA emissions requirements INVIDIA CATTED DOWN PIPE The most restrictive component of the factory exhaust system is the down pipe which begins right after the turbocharger. Invidia Exhausts use a larger pipe diameter and smooth bends allows the turbocharger to exhale exhaust gases with fewer restrictions and turbulence. Because of these reasons, Invidia down pipes make for

New for 2024: Revised design with 300CPSI catalytic converter to suit stricter EPA emissions requirements 

INVIDIA CATTED DOWN PIPE

The most restrictive component of the factory exhaust system is the down-pipe which begins right after the turbocharger. Invidia Exhausts use a larger pipe diameter and smooth bends allows the turbocharger to exhale exhaust gases with fewer restrictions and turbulence. Because of these reasons, Invidia down-pipes make for the most popular exhaust upgrade that adds a substantial bump in both horsepower and torque with a great reduction in turbo lag.

To withstand the high temperatures seen at the turbocharger laser cut cast steel flanges are used to ensure long lasting leak free reliability. A High-Flow catalytic converted is utilised to control emissions for street driving legalities but with minimal impact to exhaust flow. Designed locally to suit Australian Specification Vehicles, this is a 100% bolt on installation for right-hand drive vehicles with no modifications or changes to the steering knuckle required.  Factory O2 sensor locations are also retained to ensure compatibility with factory systems.

 

INVIDIA PERFORMANCE

Far more engineering goes in to the design of an exhaust system than many realise. From a performance perspective, there is a fine balance between exhaust back pressure and exhaust gas velocity. Too large a diameter pipe, and low down power and torque is sacrificed (particularly on naturally aspirated cars), too small a diameter or added restrictions and bottle necks in the system, and the engine is unable to push gasses out of the combustion chamber efficiently, reducing power and torque. There are many other technical aspects such as "scavenging effect" which are beyond the scope of this document, but the point is, it's not as simple as just strap on a drain pipe and gains for days. A "quality" exhaust system maximizes performance gains by design.

Invidia High Performance employ a team of engineers and conduct thorough research and development for every single exhaust component they manufacture, ensuring performance to match the customer's needs in every instance, including the use of the highest quality High Flow Catalytic Converters where applicable.

 

INVIDIA SOUND

What an exhaust sounds like is typically the number one factor when choosing a system. The acoustics of an exhaust system are hugely complex. Many people believe that all an exhaust does is muffle the natural tone of the engine, but in the vast majority of cases this is far from the truth, in fact companies like Ferrari, Lamborghini, Pagani, Porsche and alike all spend massive amounts of time and money "fine tuning" their exhaust systems to sound exactly how they want them to. Put a straight pipe on just about any hypercar and that distinctive engine note is lost.

Tuning the sound of an exhaust system adds an additional layer of complexity to the performance aspect of the design process. The goal is to design a system that sounds great, without adversely affecting performance. Invidia spend countless hours on research and development, including listening to customer feedback in order to fine tune their systems to suit the target market for each model from the quieter Q300 to the Race orientated G5 Titan, so you can be assured your car sounds its absolute best, without sacrificing performance.

 

INVIDIA CONSTRUCTION

The final piece of the puzzle is perhaps the most important of all. you don't have to be an expert to realise that all the research and development in the world means nothing if the final product is built with sub-standard materials, using sub-standard manufacturing techniques. From the very beginning, Invidia employ state of the art manufacturing techniques to ensure form, fit and finish are all on point.

 First, a 3D scan is take of the underside of the car to ensure fitment is 100% correct.  Next, grade 304 Stainless Steel  (with the exception of their titanium systems of course) is selected for all piping, mufflers and flanges. This particular grade is chosen for its strength, durability (ability to withstand the elements),  and its ability to be formed and welded with relative consistency and ease. Cast flanges are then used which ensures 100% correct fitment every time, no leaks or additional stress points, and long lasting strength.    , an

Finally, robotic welding machines are used to ensure every single weld is uniform and precise, not only adding a huge amount of strength, but also removing manufacturing variances which are unavoidable when doing a task by hand. This means every system that rolls off the production line is just about as identical as possible. All built to the same incredible high standard. Did we mention it also looks absolutely awesome?  

  

   INVIDIA LIFETIME WARRANTY

Buy with confidence! Invidia Exhausts Australia's LIFETIME WARRANTY applies to this product. Invidia Exhausts Australia warrants all of its products with a limited lifetime warranty policy. Lifetime Warranty covers:

  • Structural welds
  • Mufflers and internals
  • Cracks
  • Manufacture defects

Lifetime Warranty does not cover:

  • Catalytic Convertors (2 Years warranty)
  • Titan G5 Titanium Exhausts (12 months warranty)
  • Headers/Exhaust Manifolds (12 months warranty)
  • Logo or Invidia Badge falling off
  • Scrapes or scrubbing
  • Crashes/Vehicle Accidents
  • Damage caused by anti-lag/crackle/backfire/shift-cut Tunes

 

Terms and conditions apply - Click For Details

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 28151660172

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Dolores DelGuercio
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My car is old this product does a very good job.
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Reviewed in the United States on May 3, 2026
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Reviewed in the United States on February 14, 2026
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Keyghan
Louisville, US
★★★★★ 4
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This headlight restoration kit was perfect, instructions were easy to read and follow. It restored my headlights looking nearly new. I give a 4 star because they got dirty again In a couple months, overall the value of this product compared to the price is perfect. First photo is before, second Is after.
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Reviewed in the United States on February 9, 2026
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Alexander Jeter
New York, US
★★★★★ 5
Really good!
Size: 128 Fl Oz (Pack of 1)
This is the best, it removes 90% of dirt, it is multi purpose I love it and and if the business goes well I’ll keep buying it!
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Reviewed in the United States on April 13, 2026
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Omaha, US
★★★★★ 5
⭐️⭐️⭐️⭐️⭐️ “That ‘New Car Smell’ in a Bottle”
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I’ve been using Chemical Guys Interior Cleaner on my 2015 Subaru, and there’s something about this one that really nails that clean-car smell while doing everything you need: 🧼 Works Everywhere • Safely cleans seats, head unit, center console, dash, and door panels—all without leaving greasy residue. • Gentle enough for plastics and screens, tough enough to handle spills and grime. 🚗 That Fresh Car Smell • Leaves behind a subtle, factory-fresh scent—not overpowering or artificial. • Every time I get in, it feels like a brand-new ride. 💡 Easy to Use • A quick spray and wipe is all it takes. • No staining, no residue—just smooth, clean surfaces. ⸻ ✅ Bottom Line: If you care about that clean, fresh smell and want a product that actually cleans everything in your car interior, this is it. Fresh cabin feel with no greasy finish—perfect for a daily driver or family ride. Highly recommend!
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