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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: )
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
Subaru WRX/STI 2015+
Read 10 Reviews | 18 Q&As
Part # HS15STIGM4ST
$878.00
msrp: $1,467.00

This product is
out of stock

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.
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    REVIEWS & CUSTOMER MEDIA

    10 Reviews
    4.8 out of 5 Stars
    5 Stars
    (8)
    4 Stars
    (2)
    3 Stars
    (0)
    2 Stars
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    1 Stars
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    Customer Photos and Videos
    Invidia Gemini R400 Single Layer Cat Back Exhaust w/Titanium Burnt Tips ( Part Number: HS15STIGM4ST)
    2016 Wrx 1 month ago

    Beautiful exhaust. Very blue in sunlight. Sounds loud only when you want it to. I can come home at night from work in stealth mode by keeping the rpms low, and loud during the day when i want to open it up. All around thrilled with how it sounds/looks.
      
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    Loud But Not Annoyingly So 2 months ago
    Daimyo
    It's definitely noticeable and a bad turner. It sounds great at any speed and rpm however there is a bit of drone at about 2k to 3200rpm for me. I just installed it not too long ago so it should quiet down after a few days.
      
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    2018 wrx base  4 months ago
    donottouch
    Pros Good qaulity catback system from invidia. Easy to install All hardware and gaskets are included. Nice deep and loud tone. Burnt tips look great Cons Has a little highway drone/ not to loud though, but loud enough to forced to turn my music up to get rid of it. Fitment of the mufflers are not exact, one side is too close to the inside of my bumper fender. I had to run on one hanger so it dosnt touch. There were no instructions at all. No pictures nothing at all that i can reference to my specific year. Alot of wrong info given on this site, for my 2018 wrx base model you dont need to purchase a 3in adaptor to connect oem downpipe to the catback. It all bolts on, just use the nuts and bolts provided that came with the system. The exhaust is great but too loud for my liking i should of just gotten the axel back. Rally sport direct is a great site with good prices, shipping came a day ahead schedule.
      
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    Fits great, sounds even better. 4 months ago
    jaybelly
    This cat-back installed very easily and sounds really good! Definitely felt the increase in power when I went from Stage 1 to Stage2+ (j-pipe/cat-back/intake). The burnt tips also look amazing!
      
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    Sounds great on my 2016 STI 5 months ago
    NikkoNikko
    Quick delivery from RSD i received everything in record time! Dont forget to buy the stock downpipe to 3in exhaust adapter when installing this. Everything in the box was undamaged and all gaskes, screws, and bolts were accounted for. Install is easy by yourself but even easier if you have a friend. I decided to go with the r400 after i heard my friend's Q300+Invidia Downpipe and wanted something louder than that and on top of that it wa son sale at the time. I can say after install the r400&stock downpipe is louder. Cold Starts and nice loud but once it warms up and idles it isnt an obnoxious loud. On the Highway it's bearable. That Subie Rumble completely opens up from the stock exhaust. Sounds great on "spirited" drives. Youtube Videos do not do this exhaust justice. I highly recommend the r400!
      
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    QUESTIONS & ANSWERS

    • Q: Axle R400 fit with Q300  R4001 month ago

      Hello Recently I bought a R400, this catback its really nice but the loud its a little hard for daily use.... I want to know if the q300 axle fits on r400. Thanks
    • Q: R400 cat back exhaust   Saxb63972 months ago

      I have recently installed a invidia r400 cbe to my 2011 wrx. The exhaust is meant for wrx’s from 11-18. I have read that I’ll need an adapter? So I bought an invidia stock down pipe to 3” cbe but it doesn’t seem like it fits ? But the stock down pipe slides into the cbe and seems like I don’t need an adapter.
    • Q: Difference between the 2014 and 2015+ WRX  BU24U3 months ago

      I have the R400 for my 2014 WRX I'm trying to sell to a friend of mine, but they have the 2016 WRX. I looked at the pictures for both years for the catback and couldn't find any differences. Could you tell me if it'll work, or not at all?
      • 0 of 1 people found the following answer helpful

        A:  We are not able to confirm fitment but the chances of it fitting are slim to none.

        Jared A. @ RallySport Direct 3 months ago  
          
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      • 0 of 0 people found the following answer helpful

        A:  It fit perfectly! I'm so glad I did it! I believe I'm the first to accomplish this with the help of my buddies! There were no issues. It all fit perfectly! In yo face! 😂😂😂

        BU24U @
          
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    • Q: 2018 WRX Base model  donottouch4 months ago

      I have a 2018 WRX base model, do I need to buy anything else to make cat-back system fit?
      • 0 of 0 people found the following answer helpful

        A:  You will need the following links for installation with the OEM downpipe. https://www.rallysportdirect.com/part/exhaust-gaskets-and-hardware/sub-44022aa123-subaru-oem-donut-gasket https://www.rallysportdirect.com/part/exhaust-gaskets-and-hardware/grm-077046-grimmspeed-oem-downpipe-to-3in-cat-back-adapter

        Jared A. @ RallySport Direct 4 months ago  
          
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      • 0 of 0 people found the following answer helpful

        A:  Info given was incorrect, you dont need the 3inch adaptor to fit the oem down pipe to the catback system. You also dont use the oem doughnut gasket, a flat gasket is provided in place of the doughnut gasket. Shipment came in last week and did the install a few days after. After inspection of the stock system, and comparing it to the new system, it is all direct fit bolt on. This review applies to the 2018 wrx base model. Not the STI model.

        donottouch @
          
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    • Q: 2018 STI Gemini R400  airforcekp6 months ago

      I currently traded in my 17 WRX for a 2018 STI. My question is I had the Gemini R400 on my 17 WRX, will that fit to the 2018 STI? Or do I need A adapter? And if I do is it possible to post the link to the adapter thanks.
      • 0 of 0 people found the following answer helpful

        A:  This exhaust will fit your 18 STI, you'll want this adapter for it to fit properly: https://www.rallysportdirect.com/part/exhaust-gaskets-and-hardware/grm-077046-grimmspeed-oem-downpipe-to-3in-cat-back-adapter

        Marcus E. @ RallySport Direct 3 months ago  
          
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