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BMW

F9X M5 M8 Catless Downpipes

$1,449.00

SKU: RK.DP.F90.M5.M8

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The RK Autowerks F9X M5 M8 Catless Downpipes are designed to eliminate exhaust flow restrictions for quicker turbo spooling and immediate horsepower and torque gains. They are constructed from mandrel-bent T304 stainless steel tubing with CNC velocity stack flanges and TIG-welded construction. The downpipes retain factory O2 sensor locations and are designed for OEM fitment.
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State-of-the-art 3D scanning and prototyping ensure a fit comparable to OEM downpipes. Constructed from mandrel-bent T304 stainless steel tubes, these downpipes feature CNC velocity stack flanges at the turbo mount. Precision-mounted stainless steel bungs maintain factory O2 sensor locations, and the design contributes to reduced underhood temperatures. These downpipes are compatible with the following models: 2018+ M5 (F90) and 2020+ M8 Coupe, Convertible, & Gran Coupe (F91, F92, F93). An optional titanium heat wrap is available for an additional cost. Processing time for orders is up to one week.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandBMW
Part NumberRK.DP.F90.M5.M8
CategoryExhaust
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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