SKU: 34768022318

CTS TURBO BMW F90 S63 M5/M5C & BMW F91/92/93/ M8 HIGH-FLOW CATS DOWNPIPE SET

$468.43 $520.48
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Shipping Estimate
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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Description

CTS TURBO BMW F90 S63 M5/M5C & BMW F91/92/93/ M8 HIGH-FLOW CATS DOWNPIPE SETCTS Turbo F90 M5 M5C & F91 92 93 M8 High Flow Cats are made to maximize exhaust flow for highest power gains. Do not compromise performance and sound with factory parts. Designed using the latest in CAD technology; this part is made to fit perfectly in place of restrictive factory catalytic converter. Manufactured from CAST T304 stainless steel; hand TIG welded and back purged to ensure years of reliable performance. In addition to unleashing the

CTS Turbo F90 M5/M5C & F91/92/93/ M8 High-Flow Cats are made to maximize exhaust flow for highest power gains. Do not compromise performance and sound with factory parts.

Designed using the latest in CAD technology; this part is made to fit perfectly in place of restrictive factory catalytic converter. Manufactured from CAST T304 stainless steel; hand TIG welded and back-purged to ensure years of reliable performance.

In addition to unleashing the power and performance of your 4.4 Twin Turbo, our High-Flow Cats will make your vehicle sound like it really should. When installed with factory exhaust it produces a louder and deeper growl with much more pronounced exhaust “crackle” on downshift. While up-shifting you will enjoy a confident “punch!” as you bang through all 8 gears. The sound will be even louder if you already have an aftermarket exhaust system.

Product Details:

  • 80mm or 3.15″ diameter piping
  • Cat size: 110mm OD x 90mm Long or 4.33″ OD x 3.54″ Long
  • Includes 200 cell sport catalytic converter
  • Designed and tested on a real car in the real world
  • Cast T304 stainless steel, TIG welded back-purged construction
  • Replaces restrictive factory catalytic converter
  • Great power upgrade with uncompromising performance
  • Incredible sporty exhaust sound, subtle when cruising
  • No drone with factory exhaust

Fitment:

  • 2018-2021 F90 BMW M5
  • 2018-2021 F90 BMW M5 Competition
  • 2020-2021 F91/92/93 M8

 

To remove the CEL that will occur, proper stage 2 tuning software must be used.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 34768022318

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4.3 ★★★★★
Based on 15 reviews
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Product Reviews
Y
Verified Purchase
ym
Dallas, US
★★★★★ 3
Not effective as a cleaner
Size: 16 Fl Oz (Pack of 1), Style: Fresh
If you’re looking for a cleaner, this ain’t it. It’s about as effective as water on plastic.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
H
Verified Purchase
Han
Whiting, US
★★★★★ 5
Easy to use and high quality!
Color: Dark Black, Size: 1 Pack
Got this for my boyfriend in his car complaining about not having a place to hold his phone since his last one broke and he couldnt find one he liked again. It's perfect, zero issues very simple you just place the hooks into the heat/AC vent then screw the holder until it tightens, fit your phone in, done. It's easily adjustable in everyway. The size is perfect, it never moves or slips when driving, and you can fit it anywhere, it seems durable and we've never had it break or fall!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
B
Verified Purchase
Brendan M.
Natrona Heights, US
★★★★★ 5
The best phone holders for any car and any phone
Color: Dark Black, Size: 1 Pack
One of the best phone holders I’ve ever used! I’ve used this holder for about a year now and it is perfect for my phone; it’s durable and secure on any types of bumps, won’t mess up the angle whatsoever. It has a small hole on the bottom for charging phones. The installation is really easy; you just hook it on your vent which is great compared to other suction mounts. If this one ever breaks, I am sure to purchase the same one; super worth for money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
C
Verified Purchase
Crabman
Port Orchard, US
★★★★★ 5
Works well on 2003 Corvette.
Color: Carbon Fiber, Size: 2 Pack
I purchased these for usage in my 2003 Corvette convertible. As much as I enjoy the vehicle, they are extremely insufficient for storage. No "usable" built-in cup holder, no pockets and no flat area that can hold a cell phone. The console and glove box are not ideal in this day and age since the phones are used constantly. Enter these excellent little holders. They mount perfectly on the central vent in the dash. If you slide the bases as far as possible to each side and then tighten them down, the base will overlap the non-moving portion of the vent and keep the unit quite stable. I would suspect this is applicable for any vehicle that has the traditional flat vent fins. The holder has a hook that when fished into the vent, clasps over the back of one of the fins. By hooking the fin, once tightened down (careful not to over due this as the vents are just plastic) the installation is as stable as you can ask for vs any of those goofy clamp types that slide off quite easily, especially as they age and sun softens the pads. Benefit from my mistakes on those bad purchases and stay away from clamp mounts. If you have flat fin vents and are looking for a reliable means to mount a phone, this may be just right for you. Best of luck.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
M
Verified Purchase
Michele D.
Waukegan, US
★★★★★ 4
Good product, but...
Color: Dark Black, Size: 1 Pack
Easy to install. Like the product. The holder does not hold the phone position. It flops down alot.
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Reviewed in the United States on May 10, 2026

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