3'' Exhaust Catless Downpipes for BMW S63 F10/F12 M5 & M6 2011-2018 Stainless Steel Generic


SKU: C138-B015~001

Free & Fast Shipping

Secure & Trusted Trade

We are proud to introduce our 3Inch Catless Downpipes for the S63 F10/F12 M5 & M6 which feature a CNC stainless steel v-band to pipe transition. These 3Inch downpipes are the best bang for the buck mod available for your S63, with gains from 50hp & 60tq when tuned. By eliminating the restrictive catalytic converters in the factory downpipes, backpressure is reduced significantly which results in faster spool, an increase in power & a more aggressive exhaust note.

Rather than necking down closer to the turbos like most of our competitors, our 3Inch catless downpipe feature a full 3Inch design up to the last couple of inches of the pipe which allows a greater increase in flow. Our 3Inch downpipes are hand crafted from SS304 stainless steel

1.Adds 50-55 HP to the wheels & 60-65 TQ to the wheels.
2.CAD/CAM designed CNC flange.
3.Hand made from mandrel bent, tig welded 3Inch 304 grade stainless steel.
4.Smooth radius bends to decrease turbulence and increase flow.
5.Fits RHD and LHD models with no modification necessary.

Condition:100% Brand New
Product Type: Catless Manifold
Main Material: High Quality Stainless Steel

Fitment For:
For BMW M5 F10 with S63 motor 2011-2018
For BMW M6 F12 with S63 motor 2011-2018
For BMW M6 Gran Coupe F06 with S63 motor 2011-2018
(Fits both Left Hand Drive & Right Hand Drive Models )

Package Included:
2 x DownPipe

Shipping Information:
Free Quick Shipping to USA.
Estimated Time of Arrival: within 3-8 working days.

Customer Notification and Disclaimer of Liability.
This is a race-only product. It is not legal for sale or use on pollution controlled vehicles that are driven on public streets, roads, or highways. Buyer's use or installation of this product for itself or for Buyer's customer is at Buyer's own risk. The Buyer is responsible for obeying federal, state, and local laws. Only Buyer can determine end customer's use and thus assumes any and all liability hereby waiving any and all claims against UCarPart in the sale of this product to the maximum extent permissible by law. Make sure to abide by all local, state, and federal laws, including emissions, vehicle safety, and traffic laws. It is Buyer's responsibility to know what those laws are and how they apply to Buyer or Buyer's customer. This product is designed and intended solely for legally-organized and sanctioned, closed-course, off-road competition use and is not for use on public streets, roads, or highways. This Product is capable of disabling the emissions system on some vehicles. Use on public streets, roads, or highways is a violation of federal and certain state (including California) and local environmental laws.

Customer Reviews

Based on 40 reviews
Peter Lomba
Direct fit.

I'm surprised by its thickness exceeded my expectations. There were no issues removing the old one and installing the new one. It appears to be functioning properly. Moreover, the price was identical to that of Rock Auto, so I have no reason to complain.


Stainless steel, perfect match, and the car runs better, very satisfied!

Carlos Perez

It's incredible how much I enjoyed this exhaust, especially considering its price. The thickness and composition of the stainless steel make it highly weldable, while the mandrel bends are almost uniformly consistent. The stainless steel flanges and hangers welded flawlessly with the steel, and even galvanized mild steel pieces welded well with the tubing. The exhaust dissipates heat well, and the downstream O2 sensors had no temperature issues. The system is exceptionally durable, and I have enough leftover material to construct another system for a different vehicle. The packaging was sufficient, but not excessive. If you're searching for the perfect custom exhaust and desire enough material to experiment, then this is precisely what you should purchase.


This was an easy repair and is well worth the money.


No leaks so far and overall great quality!