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Exterior Components› Body Panels and Components

J's Racing

CFRP Rear Diffuser

$1,888.00 $606.00 Save $1,282.00

SKU: RDF-K8-C

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 J's Racing RDF-K8-C is a rear diffuser designed for the HONDA CIVIC FK8. Constructed from CFRP, it serves as an optional part for the FK8 rear under spoiler. This diffuser enhances the vehicle's rear view, providing rectification effects and downforce.
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The J's Racing RDF-K8-C is a performance-oriented rear diffuser specifically engineered for the HONDA CIVIC FK8. Beyond aesthetics, the RDF-K8-C is focused on aerodynamic enhancement. It aims to achieve further rectification effects and increase downforce, contributing to improved stability and handling at higher speeds. The material choice of CFRP ensures a lightweight yet durable construction, a hallmark of J's Racing performance parts. Installation requires drilling for mounting bolts and nuts. It is noted that this product is molded in conjunction with a J's Racing muffler, and users with aftermarket exhaust systems may need to modify or cut their existing components. For vehicles utilizing the genuine jack-up point, cutting the designated marking part is necessary. Prior to final installation, fitting work and painting are mandatory.

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

BrandJ's Racing
Part NumberRDF-K8-C
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.

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