Unlike any other mid-pipe on the market, the RPM SXS "Monster Mouth" Cat-Delete Mid-Pipe features a massive 3" internal expansion chamber paired with a 2.5" muffler outlet flange. This unique, unrestricted design allows you to run the stock OEM muffler, any RPM SXS X3 Slip-On Muffler, or any aftermarket slip-on that utilizes factory mounting locations!
By expanding to a full 1/2" larger at the core compared to stock, the Monster Mouth flows the absolute maximum volume of exhaust gas possible away from the turbo turbine wheel. To ensure a leak-free seal across this high-flow transition, RPM engineered a custom heavy-duty spherical exhaust gasket crafted from stainless steel mesh infused with composite graphite. Constructed from 100% TIG-welded 304 stainless steel, this cat-bypass frees up maximum horsepower while substantially lowering under-hood radiant heat. Removing the restrictive factory catalytic converter nets an immediate 5–8 wheel horsepower gain on a stock tune with NO ECU tuning required!
Features:
Massive 3" Chamber to 2.5" Outlet Design: Delivers unmatched exhaust flow velocity, reduced backpressure, and a deep, aggressive sport tone.
Dyno-Proven 5–8 WHP Gains: Unlocks immediate wheel horsepower and torque gains on stock or tuned fuel maps.
Proprietary Stainless Mesh Graphite Gasket: Includes a heavy-duty spherical gasket engineered specifically for extreme exhaust gas temperatures and vibration resistance.
Substantially Lowers Radiant Heat: Eliminates the heat-trapping factory catalytic converter to keep engine bay and rear chassis temperatures significantly cooler.
Dual O2 Bungs Included Standard: Retains the factory O2 sensor while providing a secondary 18mm bung with a screw-in cap for wideband data loggers and dyno tuning.
Ultra-Lightweight 304 Stainless Construction: 100% TIG-welded stainless steel engineered for maximum durability under severe off-road heat cycles.
Universal Muffler Compatibility: Connects seamlessly to the OEM muffler, RPM SXS Slip-On Mufflers, or any aftermarket muffler using stock-style mid-pipe flanges.
No ECU Tuning Required: Safe, immediate bolt-on performance upgrade right out of the box.
Includes a replacement RPM 3" Exhaust Bracket (requires removal of the factory bracket).
The factory heat shields that clamp directly to the OEM mid-pipe are omitted for maximum heat dissipation, but all other surrounding factory heat shields are 100% retained and reused!
Fitment:
Can-Am Maverick X3 / X3 MAX (Fits All Years & Models: Turbo, Turbo R, & Turbo RR — including XRC, XRS, XMR, and XDS)
All orders typically ship within 2-4 business days of order being placed. Weekends, holidays, and weather may slow fulfillment down on order processing. Unless otherwise noted, backordered items will ship according to their estimated shipping times.
Customer Reviews
Overall rating: 4.9 / 5 from 37 reviews.
LET IT FLOW!! Sheesh what a difference. Easy to install (except for the bracket because a lot off stuff in the way but man did it make a difference in how the machine glides now, the sound is awesome even though I still have the factory muffler (coming soon) also being able to hear the turbo whistle is lovely. Thanks rpmsxs and thanks for the extra goodies in the box.
Pretty easy straightforward install. Replacing the factory support bracket was the biggest pain. Would recommend spring tool. Overall very pleased with the product! Noticed improvement in performance and overall sounds quality of the exhaust. 2025 3X DS Turbo.
Monster Mouth is a very nice piece! Easy to install with the instructions, noticeable power gain.Ran into stock muffler sounds quiet like normal until you get after it and you can tell there's no more restrictions with this pipe!
Jeff H
Jason was very helpful in linking me with a PDF of the install. The job is kind of a PITA and time consuming even with two people. I had trouble getting the old turbo/pipe band off and the new 3 inch pipe mount is difficult to R&R the old OEM.
Great part again from RPM sounds perfect, install was super easy I had my 12 year old help me only took about and hour. Couldn't be any happier with the sound.
Everything was very high quality. It cooled my x3 down dramatically. They sent it with a new bracket to replace the factory one. It was a pain to change out. The pipe itself was easy but the bracket had bolts that were "very" difficult to get to. It would have been nice to have some instructions in the box. I think the old bracket would be fine if I would have trimmed or ground a piece out of it. Overall I'm very happy with my purchase and would definitely buy from RPM again!
Love this addition. Looks great but really brought the heat down. As far as sound it has a little more growl no one really says much about it and it carries the great sound all the way through.You cans also smell exhaust a bit more after due to the cat removal. Which I expected. I run a octane booster by klotz so I can smell it alot more. Not a huge change but it is alot more responsive seems to light the turbo faster but might also be the BOV I Installed too. Either way it's a nice piece just need to add the chambered with e valve to finish.
Sounds amazing was on the fence of 2.5 or full 3 inch glad I went with 3 inch. My brother has rpms 2.5 and not that it sounds bad but the 3 inch has a much better pitch and tone. Ran it open header for a few pulls while waiting for my exhaust and it's a ear piercer
Absolutely love the product and super good quality! Dropped engine temps by 12 degrees on my rig (x3 max RR). But finding the videos for install could have been made way more easier for user!! Love the project and would put as #3 must do! Wished I had done this sooner!!
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