DMAKER STI-Spec Rear Diffusers / Under Spoilers for Subaru WRX / STI (VA) 2015-2021 [Carbon Fibre]

Product Description

DMAKER STI-Spec Rear Diffusers / Under Spoilers for Subaru WRX / STI (VA) 2015-2021 [Carbon Fibre]

The DMAKER STI-Spec Rear Diffuser / Under Spoiler [Carbon Fibre] is a premium rear aero upgrade developed specifically for the Subaru WRX / STI (VA) 2015–2021. Designed with STI-Spec OEM+ philosophy, this diffuser enhances rear-end presence and visual performance intent while preserving factory proportions, precise fitment, and everyday usability.

Constructed from high-quality carbon fibre, the exposed weave delivers a refined motorsport aesthetic that elevates the rear profile without overwhelming the VA chassis’ original design language. The diffuser profile adds structure and depth beneath the rear bumper, visually lowering the vehicle and reinforcing a planted, performance-focused stance.

Manufactured to meet high durability and fitment standards, the STI-Spec carbon diffuser is shaped using VA-specific geometry to integrate seamlessly with the factory rear bumper and exhaust layout. The result is clean alignment, consistent panel gaps, and a factory-intentional finish that pairs naturally with STI-Spec carbon side skirts and rear side spats.

Engineered for real-world driving conditions, the DMAKER STI-Spec Carbon Fibre Rear Diffuser completes the aero package with balance and cohesion. Whether finalising a full STI-Spec carbon build or upgrading the rear-end details of a performance street car, this diffuser delivers presence, quality, and unmistakable STI-Spec execution.

Product Features

• Specifically designed for Subaru WRX / STI (VA) 2015, 2016, 2017, 2018, 2019, 2020, 2021

• Premium carbon fibre construction with exposed weave finish

• Crafted from high-quality lightweight carbon fibre with superior strength 

• Features a glossy finish enhanced with a UV-resistant clear coat for protection

• Enhances rear-end presence with a more planted, performance look

Product Includes

• (1) DMAKER STI-Spec Rear Diffusers / Under Spoilers

• Installation Hardwares and Accessories

Product Compatibility

Subaru WRX (VA) Series (2015–2021 Models):

• WRX Base (No Badge) Sedan

• WRX Club Spec Sedan

• WRX Premium Sedan
  

• WRX STI Sedan

• WRX STI EJ25 Final Edition Sedan

• WRX STI Kuro Edition Sedan

• WRX STI Premium Sedan

• WRX STI Spec.R Sedan

Product Terms & Conditions – Fitment, Returns & Warranty

We strongly recommend conducting a test fit of all products prior to any painting, modification, or installation. This ensures compatibility and fitment, and helps prevent issues that may affect your eligibility for a return or warranty claim.

• Products must be returned in their original, unused, and resalable condition, including all original packaging and accessories.

• Any product that has been installed, painted, modified, or damaged may not be eligible for return or warranty consideration.

• Claims for return or warranty will not be accepted if the item shows signs of tampering or use beyond the test fit stage.

Our policies comply with the Australian Consumer Law (ACL), which provides certain guarantees that cannot be excluded. These include the right to a repair, replacement, or refund if a product is faulty or not as described.

Our team takes great care to achieve the most accurate paint match possible, factoring in the natural differences between plastic and metal surfaces, which can affect paint bonding and finish. While slight shade variations may occur due to these material differences, we proudly deliver a 99% paint match accuracy across all factory shades -with the exception of Ceramic White, which reaches up to 95% accuracy due to its unique pigmentation characteristics.

While we strive to match paint colours as closely as possible, please note the following conditions regarding paint-related claims:

• Paint finish and colour variation are not covered under warranty unless the product is painted in the incorrect colour code compared to the customer’s order or, delivered with significant defects such as peeling, cracking, or flaking within 12 months of purchase

• Slight differences in paint appearance caused by surface material (e.g. plastic vs. metal), lighting conditions or application methods, which are considered normal and not eligible for refund, exchange, or warranty claims.

• Any claims related to paint issues must be submitted within 7 days of receiving the product, along with clear photographs for assessment.

• Warranty does not apply if the item has been installed, altered, repainted, or otherwise modified. This also apply to damages due to misuse, accidents, or improper storage

For more information, please refer to our Refund Policies located on our website for the full Terms & Conditions. 

If you have any questions or concerns, please contact our customer support specialist at the email address provided or use the contact form on our website.