Paktechz Carbon Rear Diffuser for Audi RS3 8Y Sportback (2021–Present)

$1,395.00 USD

Add a More Aggressive Rear-End Profile to Your Audi RS3 8Y Sportback

This Paktechz carbon rear diffuser sharpens the lower rear section of the Audi RS3 8Y Sportback, adding depth, presence, and a more performance-driven character. Designed specifically for the 2021+ RS3 Sportback, it integrates cleanly with the factory bumper to deliver a premium OEM+ appearance. Available in both 2x2 twill and forged carbon gloss finishes, this diffuser provides a lightweight, rigid, and visually striking upgrade for both daily and enthusiast-driven builds.

Dry Carbon Construction (Autoclave-Cured Premium Manufacturing)

Paktechz manufactures all components using true dry carbon fiber, cured in an autoclave for superior rigidity, reduced weight, and exceptional surface clarity. Unlike wet-laid or infusion carbon, dry carbon uses pre-preg fiber sheets and controlled high-pressure curing to achieve:

sharper, cleaner geometry
consistent weave alignment
increased structural stiffness
reduced resin pooling and micro-distortion
a distinctly premium finish suitable for high-end performance platforms

This construction method places Paktechz among the top-tier carbon manufacturers serving luxury and motorsport-inspired vehicles.

Why Choose Paktechz?

Paktechz is known for precise mold development, consistent weave quality, and reliable fitment across European performance platforms. Their dry carbon aero components offer a premium finish, strong stability, and excellent long-term durability.

Highlights

True autoclave-cured dry carbon construction
Direct fit for Audi RS3 8Y Sportback (2021–Present)
Enhances rear-end styling with a more aggressive OEM+ profile
Lightweight, rigid, and premium finish
Available in 2x2 carbon or forged carbon gloss variants

Professional installation is recommended. Images may be for reference

Have questions about this product? We're here to help!

FRP - Fiberglass Reinforced Polymer is unprimed, unpainted version of our product. It is intended to have the entirety of the item professionally finished after a pre-install of the product by means of sanding and other work before paint is applied.

CFRP - Carbon Fiberglass Reinforced Polymer is clear coated, UV-lacquered version of our product with the entirety of the exterior in Carbon Fiber with the underside of the item in FRP (Fiberglass Reinforced Polymer). It is intended to direct bolt on these products without any additional paint and/or bodywork.

FCFRP - Forged Carbon Fiberglass Reinforced Polymer is clear coated, UV lacquered version of our product with the entirety of the exterior in Forged Carbon Fiber with the underside of the item in FRP (Fiberglass Reinforced Polymer). It is intended to direct bolt on these products without any additional paint and/or bodywork.

CF100 - 100% Carbon Fiber is clear coated, UV-lacquered version of our product with the entirety of the part made of Carbon Fiber. It is intended to direct bolt on these products without any additional paint and/or bodywork.

FCF100 - 100% Forged Carbon Fiber is clear coated, UV-lacquered version of our product with the entirety of the part made of Carbon Fiber. It is intended to direct bolt on these products without any additional paint and/or bodywork.

Our products are made using the best production techniques and high-quality materials, allowing for easy prep and excellent fitment.

Professional installation by an experienced aftermarket aerodynamic installer is highly recommended on all products, the level of difficulty for installation varies for each application, and is dependent on the experience of the installer.

Please note, for widebody kits you will typically need to cut front arches; and cut, weld and seal rear quarter panels to properly install the kit to allow wider wheels.

The flares can be attached via silicone/epoxy; or bolted on using proper hardware.