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Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Community Media
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips (Part Number: )
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips
Subaru WRX/STI 2015+
Read 16 Reviews | 31 Q&As
Part # HS15STIGM4ST
$1,540.00
msrp: $1,540.00

In stock! Ships same day

Features & Product Details

RallySport Direct is proud to carry the Invidia Gemini R400 Single Layer Cat-Back Exhaust System. This is a great way to improve both the performance and sound of your vehicle. 

Here are more details:

  • Titanium burnt tips
  • 3" Piping diameter
  • 304 Stainless steel materials
  • Pronounced exhaust note throughout the entire RPM band
  • Exhaust hangers welded onto OEM locations to make it a direct fitment exhaust
  • New hardware and gaskets provided to make this exhaust ready for the installation
  • Specifications

    Brand: Invidia
    Exhaust Orientation: Straight Exit
    Installation Hardware Included: Yes
    Piping Coating: No
    Piping Flex Joint: Yes
    Piping ID: 3.00in
    Piping Material: 304 Stainless Steel
    Piping Taper: No
    Silencer Included: No
    Tip Material: Titanium
    Tip Qty: 4
    Tip Shape: Round
    Tip Size: 4.00in
    Mfgr. Warranty: 1 Year
    Condition: New Product
    Return Policy:

    RallySport Guarantee - 30 Days


    Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

    RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

    The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
    Standard

    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    16 Reviews
    4.9 out of 5 Stars
    5 Stars
    (14)
    4 Stars
    (2)
    3 Stars
    (0)
    2 Stars
    (0)
    1 Stars
    (0)
    Customer Photos and Videos
    Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips ( Part Number: HS15STIGM4ST)
    Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips ( Part Number: HS15STIGM4ST)
    Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips ( Part Number: HS15STIGM4ST)
    Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips ( Part Number: HS15STIGM4ST)
    Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips ( Part Number: HS15STIGM4ST)
    Best exhaust I've bought 2 months ago
    5out of 5stars

    I bought this exhaust last year in March. Quick and painless install. When U turned the car on the first time, I was amazed at the sound of it. It wasn't an obnoxious loud sound, nor was it something quiet. Immediately went and took the car for a drive, and it was music to my ears. Anywhere from accelerating or down shifting, it made the car sound more and more alive. If ever given the chance, I'd buy this same exhaust in a heartbeat. Plus I just got the Invidia J-Pipe so I'm sure I'll be hearing the exhaust even more now haha
      
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    switched to r400.. Oh boy its loud 3 months ago
    5out of 5stars

    So I was running the Nameless midpipe and resonator with 5" exhaust.. yet Nameless Vbands where mashing the side of my Differential housing and causing diff. overheating!! (R180).. I switched to Gemini R400 because they don't have a connection right at the diff and are routed a bit farther away. with Nameless, it rested on the diff. with Invidia R400, it is 1 whole inch away. It looks good. But dang is my car loud, just as loud as running it with nothing I feel. (I'm stage 4, EWG headers, Jpipe, meth, etc..) interior noise levels just went up! It sounds good but loud. build is very good, went in super easy, less than 1 hour (counting jacking up car etc..) My only problem was that they pack a 2 1/2 inch gasket for the Jpipe area.. mine is 3" I had to go to the hardware store and auto parts stores searching till at the 10th place I found one I had to modify to work.. Invidia just include both option (or RSD just add this an option for those of us that assume all gaskets are included!!)
      
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    Amazing as expected  4 months ago
    5out of 5stars

    Shipped so fast, and days before Christmas too. Took less then 2 hours to remove my stock exhaust, an install this one. Has a great low rumble too it, eleven with stock down pipe and headers. Is not as loud from inside the car as I was expecting it to be either. Best purchase I’ve made out of everything I’ve purchased so far.
      
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    Invidia Gemini R400 with Blue burnt Tips 4 months ago
    5out of 5stars

    so happy with my purchased..its an amazing product and a beautiful masterpiece from Invidia.. highly recommended..and so happy to mention to the fast and free shipping of Rallysportdirect..speaking of sound..its great!!!
      
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    1 of 1 people found the following review helpful
    2018 STI Limited 5 months ago
    5out of 5stars

    Overall. A good buy. Installation was fairly easy. The fitment was perfect. You will need the Grimmspeed adapter. I didnt need a new donut gasket. The sound is louder than you expect. It drowns around 2500 - 4500 rpm, as you shift. One you get to cruising speed (60-80mph). Its not bad at all you can talk without a problem. The tips out the back look AMAZING!! I'm glad I got them.
      
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    QUESTIONS & ANSWERS

    • Q: tuning  Alexander2 months ago

      do i need a tune after installing this cat back of can i wait a few weeks after before getting an access port.
    • Q: the fitment   jonathan galeano2 months ago

      If i have a 2019 wrx sti would i need to purchase anything else for it to fit properly on my car ??
    • Q: Fitment  Josh 2 months ago

      I just purchased they invidia r400 for my 2015 wrx, I've seen that I need an adaptar if I'm running stock down pipe. I would rather just buy a aftermarket down pipe. Will I need an invidia downpipe or can I buy any and it will match up?
    • Q: Invidia r400   Brayan7142 months ago

      I was just wondering if anybody knew if this exhaust is legal in California
      • 0 of 0 people found the following answer helpful

        A:  We cannot confirm if it is legal or not, you would need to contact your local government.

        Devan M. @ RallySport Direct 2 months ago  
          
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      • 0 of 0 people found the following answer helpful

        A:  How would I have to tell him

        Brayan714 @
          
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    • Q: Invidia r400  Brayan7142 months ago

      Does anybody know if this exhaust is legal in California