SET YOUR CAR
FREE SHIPPING
On orders over $99
TALK TO A PARTS EXPERT
RALLYSPORT GUARANTEE
100% Money Back on Select Parts
Product images
Product Media
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips - Subaru WRX 2010-2014 / STI 2011-2014
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips - Subaru WRX 2010-2014 / STI 2011-2014
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips - Subaru WRX 2010-2014 / STI 2011-2014
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips - Subaru WRX 2010-2014 / STI 2011-2014
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips - Subaru WRX 2010-2014 / STI 2011-2014
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips - Subaru WRX 2010-2014 / STI 2011-2014
Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips - Subaru WRX 2010-2014 / STI 2011-2014
Community Media
User Media for: Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips - Subaru WRX 2010-2014 / STI 2011-2014
User Media for: Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips - Subaru WRX 2010-2014 / STI 2011-2014
User Media for: Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips - Subaru WRX 2010-2014 / STI 2011-2014

Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips

Subaru WRX 2010-2014 / STI 2011-2014

Read 4 Reviews | 7 Q&As
Part # HS11STIGM4SS
$1,029.44
msrp: $1,548.00

Ships within 33 days

Features & Product Details

RallySport Direct proudly carries a large selection of quality high-performance master-crafted exhaust options brought to you by Invidia. 

 

This is the Invidia Gemini R400 Single-Layer Cat-Back Exhaust System. This exhaust system features a design that combines minimal bends with a larger piping diameter. This will allow for an unobstructed exit of exhaust gases with minimal restrictions and turbulence. This will allow for improvements in both horsepower and torque, along with improvements in throttle response. Additionally, the Gemini R400 will create a race-inspired exhaust note that will make the overall driving experience much more enjoyable. 

 

 

 

DETAILS:

  • 304 stainless steel construction
  • 76mm piping diameter
  • 1.5mm piping thickness
  • Tuned mufflers for optimum sound and exhaust flow
  • Cast flanges provide precision fitment and durability
  • Machine-welded
  • Quad 4" slash-cut stainless steel tips
  • Exhaust hangers welded onto the OEM locations to make for a straight-forward installation
  • Includes new gaskets and hardware
  •  

     

     

     

     

     

     

     

     

     

    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: Stainless Steel
    Tip Qty: 4
    Tip Shape: Round
    Tip Size: 4.00in
    Mfgr. Warranty: 1 Year
    Condition: New Product
    Return Policy:
    Standard

    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    4 Reviews
    4.8 out of 5 Stars
    5 Stars
    (3)
    4 Stars
    (1)
    3 Stars
    (0)
    2 Stars
    (0)
    1 Stars
    (0)
    Customer Photos and Videos
    Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips ( Part Number: HS11STIGM4SS)
    Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips ( Part Number: HS11STIGM4SS)
    Invidia Gemini R400 Single Layer Cat Back Exhaust w/Stainless Steel Tips ( Part Number: HS11STIGM4SS)
    Sounds great 12 months ago
    5out of 5stars

    Installed this on my built 2012 WRX sedan with catless down pipe perrin equal header with egr and tvg deletes with grimmspeed uppipe and blouch 20g turbo and it sound great wanted to see how much louder it would be than the q300 is a little louder than the q300 but not that much it is just really deep sounding if you the sound of the n1 but do not have to worry about getting pulled over than this is the exhaust you want. Also this midpipe is like inch longer than the one that comes with the q300 exhaust since there is a less of a bend in the flex joint and take some adjusting to get the q300 mufflers to sit right with out sticking out too much.
      
    Was this review helpful?
    Sounds great, fitment with grimspeed stock downpipe bracket not so great. 2 years ago
    4out of 5stars

    After installation (2013 wrx) with the stock downpipe and the grimmspeed bracket to attach a 3" exhaust to the stock downpipe, the tips stick out the back about 1.5" and the driver side sticks out just a little bit more, causing it to look a little uneven. Really bugs me, as I am extremely OCD about lining things up and having them look perfect. You cant really tell if you are just glancing at the car, but if you look at it from the rear or angle for awhile you can definatly notice it. I attempted to lossen and re-align everything at least 4 times, and still no movement to tuck the tips in further. I assume without the grimmspeed bracket, and a 3" downpipe you could achieve perfect fitment, but as of right now I dont plan on going stage 2, so in the future i will give it a try when I do up/down pipes. But as for the sound it is unbelievable, I ordered the exhaust and was worried about "what if this exhaust only sounds a little better than my spt exhaust, is it really worth the money" hands down i completely underestimated the exhaust, my spt had a nice little grumble to it, but this one is like 3x louder (I like em loud) when I am in a higher gear it is hardly noticeable, but when I step on the gas, woohoo! The spt was very subtle compared to the r400. It is LOUD but not obnoxiously loud, it's the perfect kind of loud! Anyone debating getting this exhaust, stop thinking, breakout that credit card and get this baby ordered. Just be aware that if you are mating the stock downpipe to this CBE you will need the grimmspeed bracket (and new donut gasket) and will have slight fitment issues. I would have liked to have known this before ordering/installing so I didnt waste like 2 hours trying to get it to fit right, just a heads up to all ordering this exhaust.
      
    Was this review helpful?
    Grumble  3 years ago
    5out of 5stars

    I had to replace my clutch on my 2013 WRX and figured I’d do the turbo back exhaust. The R400 paired with the Invidia catted downpipe are beautiful. The sound is amazing but LOUD. Cruising on the pkwy at 70mph in 5th gear there is minimal drone but she grumbles as soon as you get on her. I am going to install 80mil sound deadening with 394 mil insulated sound deadening in the really troublesome areas to keep the grumble outside of the car. Overall, sounds awesome and looks great. Thanks to Joe at Redline Autosports in Floral Park, NY for another great installation.
      
    Was this review helpful?
    This exhaust is such a good investment 4 years ago
    5out of 5stars

    I got this catback in hopes of finding something that had a nice loud rumble to it, but wasnt too obnoxious (like the invidia N1). This exhaust did just that. It looks great, sounds great, and there is NO DRONE on the highway. Immediately after install, I took my car on an 8 hour drive and I had no complaints. but trust me, it sounds f***ing sweet from the outside!!!
      
    Was this review helpful?

    QUESTIONS & ANSWERS

    • Q: fitment  neil1 year ago

      I have a Cobb 3" downpipes will this fit directly to it or do in need an adpater
    • Q: HS11STIGM4SS  W663N2 years ago

      HS11STIGM4SS -Does this model fit into Impreza WRX STI 2013 Sedan 2.5 and do we have set anything in it’s CPU after installing it.
      • 0 of 0 people found the following answer helpful

        A:  Yes this will work with your vehicle and you will not need any sort of tuning after installation.

        Tylo R @ RallySport Direct
          
        Was this answer helpful?
    • Q: Exhaust Setup  13 STI2 years ago

      This set up comes with a downpipe right?
    • Q: Fitment  619sti3 years ago

      Hey. Will this fit a 15sti as well? If not, what’s the difference?
      • 0 of 0 people found the following answer helpful

        A:  This is not confirmed to fit as they are a different body style the exhaust bends and hangars will be in different locations.

        Devan M. @ RallySport Direct 3 years ago  
          
        Was this answer helpful?