Exterior Components› Body Panels and Components

CT Carbon

Big Fin Rear Diffuser

$370.00

SKU: CT170

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The CT Carbon Big Fin Diffuser is a forged carbon fibre rear diffuser designed for the Mercedes C63 and C63S AMG Coupe. It is compatible with the 2015-2018 W204 C63 Coupe models.
Show original supplier description
The CT Carbon Big Fin Diffuser is a premium aftermarket upgrade crafted from forged carbon fibre, designed specifically for the Mercedes C63 and C63S AMG Coupe models. This aggressive-looking diffuser features a 'big fin' style, enhancing the vehicle's sporty aesthetic. Engineered for a precise fit, this diffuser is compatible with the 2015 through 2018 W204 C63 Coupe. The use of forged carbon fibre not only provides a distinctive visual appeal but also offers a lightweight yet durable construction, characteristic of high-performance automotive components. CT Carbon offers a 12-month warranty on all their products. They provide various fitting options, including booking at their Hertfordshire, UK facility, finding a local partner, or following their DIY fitting guides. Orders placed before 3 pm GMT are typically dispatched the same day, with free UK delivery and worldwide shipping available. Returns are accepted within 30 days of purchase if the product has not been fitted.

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.

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Specifications

BrandCT Carbon
Part NumberCT170
CategoryExterior Components

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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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