Exhaust› Mufflers and Resonators

RENNtech

Stainless Steel Muffler

$2,180.00

SKU: 49.231.22550

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The RENNtech stainless steel muffler is a high-performance exhaust component for the Mercedes-Benz R231 SL 550.

Each unit is built to be lighter than the factory-equipped stock exhaust.
Show original supplier description
The RENNtech stainless steel muffler is a performance-focused exhaust upgrade specifically engineered for the Mercedes-Benz R231 SL 550. By replacing restrictive stock components with this hand-crafted stainless steel system, the upgrade effectively reduces exhaust back pressure and optimizes exhaust gas flow to support increased power delivery. Beyond performance gains, these mufflers are rigorously tested to eliminate unwanted cabin resonance, ensuring the vehicle retains its signature luxury driving experience while delivering a deeper, more aggressive exhaust note. The system offers a noticeable weight reduction compared to the stock factory exhaust, contributing to improved vehicle dynamics. Please note that this component is designed specifically for the R231 chassis SL 550. As this item is available for custom order only, professional consultation is recommended to ensure proper installation and compatibility with your specific vehicle configuration.

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

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandRENNtech
Part Number49.231.22550
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.

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