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11-22-2023LAST POST
Challenge was the undisputed king of the E9X X-Pipe, but they became virtually impossible to procure. With RKP’s timely acquisition of Challenge, they have elected to bring this sought-after piece back in all the right configurations, but with some notable improvements in production.

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What it Does: It has to be said that the S65 is one of the best sounding motors from BMW’s M division and the RKP X-Pipe helps it sing on song in all the right ways. By foregoing the secondary (unmonitored) catalytic converters and replacing the primaries with a hi-flow cat (or eliminating them altogether) the S65 screams as the BMW gods would have intended with the added benefit of significant power gains. Win win.

Defining Features: Achieving the perfect sound is all about careful calculation and placement. Where you place the “X” and its accompanying primaries (where applicable) make all the difference here and RKP has it just right. RKP’s production improvements and impeccable welds also guarantee that this X-Pipe will easily be the highest quality piece on the market.

RKP Street X-pipe
https://ind-distribution.com/collections/m3-e92-e93/products/rkp-e9x-m3-x-pipe-street

Image hosted on: live.staticflickr.com

Image hosted on: live.staticflickr.com

The RKP Street X Pipe features 304 stainless steel piping and flanges, twin high flow resonators, and a precision fabricated X section. This pipe slip fits after your OEM cats, for easy installation with NO check engine lights!

Product Details:
Made in the USA
Full stainless steel construction
Laser cut and formed mounting brackets
2.5 in Piping
Twin resonators for noise and drone reduction
Retains factory primary cats
No check engine light
Flanged design for easy installation and upgrade options
10 wheel hp and 15 ft tq gains with factory exhaust
Increased low end power
Fits E90 M3, E92 M3 and E93 M3

RKP RACE X-pipe
https://ind-distribution.com/collections/m3-e92-e93/products/rkp-e9x-m3-x-pipe-race

Image hosted on: live.staticflickr.com

Image hosted on: live.staticflickr.com

Product Details:
Made in the USA
Full stainless steel construction
Laser cut and formed mounting brackets
2.5 in Piping
Twin resonators for noise and drone reduction
Full bolt on installation
Fits E90 M3, E92 M3 and E93 M3

RKP SPORT X-PIPE
https://ind-distribution.com/collections/m3-e92-e93/products/rkp-e9x-m3-stainless-steel-x-pipe-sport

Image hosted on: live.staticflickr.com

Image hosted on: live.staticflickr.com

Product Details:
Made in the USA
Full stainless steel construction
Laser cut and formed mounting brackets
2.5 in Piping
Twin resonators for noise and drone reduction
Twin 200 cel catalysts
Full bolt on installation
Fits E90 M3, E92 M3 and E93 M3

Please contact IND by phone or email for more information or to place your order.
866.963.4520 | info@ind-distribution.com


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If I already have test pipes on a stock X-pipe could I get a RKP Street and have a fully catless setup? Test pipe fit the "Street" X-pipe?
Great job on all efforts to make this happen!

These are a work of art ! :happyanim:
8500RPM wrote
If I already have test pipes on a stock X-pipe could I get a RKP Street and have a fully catless setup? Test pipe fit the "Street" X-pipe?
It depends on the section of the OEM X-pipe that was cut-off. You could email us at info@ind-distribution.com. We can send measurements over from the RKP/Challenge Street X-pipe.
Exclusivs wrote
Great job on all efforts to make this happen!

These are a work of art ! :happyanim:
Thanks! Extremely happy to have the X-pipes not only back on the market but also in stock :party0030:
I am in the same boat as you. I have the turner down pipes and the street x-pipe looks tempting.
8500RPM wrote
If I already have test pipes on a stock X-pipe could I get a RKP Street and have a fully catless setup? Test pipe fit the "Street" X-pipe?
Sound clips pls
bvrider1 wrote
I am in the same boat as you. I have the turner down pipes and the street x-pipe looks tempting.
I have Turner pipes too lol
8500RPM,


I placed an order yesterday and UPS said it it should be here by the end of the day. (Talk about quick!!! )

I plan on taking pictures of the fitment with the Turner pipes and the Meisterschaft exhaust.

iND has been nothing but great with this process and put me in a good spot to test fit these.

The least I can do is post up my findings and hope it will rule out the fitment questions.

8500RPM wrote
I have Turner pipes too lol
Just ordered the sport yesterday, can't wait for it to come in! I'll be pairing it with a Borla Atak and will be sure to post before/after vids!
No go on the Turner Pipes. Nothing wrong with the RKP pipe, it was the exact 60" that is the same as the OEM section.

The issue I ran into was my test pipes were barely on (bought the car with it on). I had it on for a bit and it would pop right off. The individual sections met end to end, that's how close it was. No sense in hacking the install so I am going to make a stop at my local shop and see what options I have.

If the tuner pipe was 1" longer I would be all set and plop right into the RKP pipe.

Oh well, hope this helps others.
bvrider1 wrote
8500RPM,


I placed an order yesterday and UPS said it it should be here by the end of the day. (Talk about quick!!! )

I plan on taking pictures of the fitment with the Turner pipes and the Meisterschaft exhaust.

iND has been nothing but great with this process and put me in a good spot to test fit these.

The least I can do is post up my findings and hope it will rule out the fitment questions.
aututto wrote
Just ordered the sport yesterday, can't wait for it to come in! I'll be pairing it with a Borla Atak and will be sure to post before/after vids!
Thanks again! You took the last SPORT we had in stock :D more going into production now.
bvrider1 wrote
No go on the Turner Pipes. Nothing wrong with the RKP pipe, it was the exact 60" that is the same as the OEM section.

The issue I ran into was my test pipes were barely on (bought the car with it on). I had it on for a bit and it would pop right off. The individual sections met end to end, that's how close it was. No sense in hacking the install so I am going to make a stop at my local shop and see what options I have.

If the tuner pipe was 1" longer I would be all set and plop right into the RKP pipe.

Oh well, hope this helps others.
Thanks for taking the time to report back to the forums.
bvrider1 wrote
No go on the Turner Pipes. Nothing wrong with the RKP pipe, it was the exact 60" that is the same as the OEM section.

The issue I ran into was my test pipes were barely on (bought the car with it on). I had it on for a bit and it would pop right off. The individual sections met end to end, that's how close it was. No sense in hacking the install so I am going to make a stop at my local shop and see what options I have.

If the tuner pipe was 1" longer I would be all set and plop right into the RKP pipe.

Oh well, hope this helps others.
Yeah man thanks for reporting back!
Hi, how much is the RKP SPORT ship to Australia?
Ecytsai wrote
Hi, how much is the RKP SPORT ship to Australia?
PM sent ;)
I'm inquiring about the Street X-Pipe. All exhaust components are fully stock with no modifications, but I'm looking to gain some low end torque as well as some rumble. Will the Street achieve all that while having no drone and no check engine light?

Located in Southern California.
matteblack7 wrote
I'm inquiring about the Street X-Pipe. All exhaust components are fully stock with no modifications, but I'm looking to gain some low end torque as well as some rumble. Will the Street achieve all that while having no drone and no check engine light?

Located in Southern California.
The street would be the best option for you. It will gain around 15 ft lb of tq with your stock setup and no need for a tune. It will be louder than the factory pipe as well. We have these in stock!
Ryan@IND wrote
The street would be the best option for you. It will gain around 15 ft lb of tq with your stock setup and no need for a tune. It will be louder than the factory pipe as well. We have these in stock!
Does the Street just bolt on to the front cats?
NorCal24 wrote
Does the Street just bolt on to the front cats?
The stock X-pipe from primaries back will need to be cut off, this pipe will clamp on just behind the primaries.
How much for the street pipe? thank you
sorry - it'd help if I actually clicked on the link lol.

Can I get a pm for cost with shipping to 97007?