
Pistons
Cosworth Pistons Subaru WRX STi EJ25 99.75mm 8.2:1CR - Subaru WRX STI GD / WRX STI GR/GV / WRX STI VA
$1,179.16 USD
Learn more$963.00 USD – $1,021.00 USDPrice range: $963.00 USD through $1,021.00 USD
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APR Performance – Brake Cooling. Fits Subaru WRX STI VA.
Introducing the APR Performance CF-815658 Brake Cooling Ducts, designed to enhance your vehicle's braking performance on the track. These ducts are aerodynamically optimized to efficiently funnel air directly to your brake rotors, leveraging the venturi effect. As your speed increases, the air is drawn in at higher pressure and velocity, ensuring that your brakes stay cool and effective lap after lap.
Excessive heat can lead to serious damage to critical components, including brakes, transmissions, and differentials. The CF-815658 ducts are engineered to combat this issue by channeling fresh air directly where it’s needed most. When paired with high-temperature air duct hoses, these ducts provide a reliable solution for keeping your brakes at optimal temperatures, minimizing the risk of brake fade during intense driving sessions.
"I installed the APR CF-815658 ducts on my 2016 STI, and the difference is noticeable. My brakes feel more responsive, and I no longer worry about overheating during track days!" - Alex T.
"These ducts are a game-changer. They fit perfectly and look fantastic with the carbon fiber finish. Highly recommend for anyone serious about performance!" - Jamie R.
Material: Pre-preg Carbon Fiber Reinforced Polymer (CFRP) Composite
Weight: Lightweight design for improved overall vehicle performance
âš WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Fitment: Subaru WRX STI VA (2015-2021) EJ257 2.5T
Please confirm year, trim and engine before ordering.
| Part number | CT-VR-CF-815658-P |
|---|---|
| Option | 2015-2017, 2018-2021 |
| Shipping weight | 4 lbs |
| Package size | 16 × 12 × 6 in |
| Vehicle | Years | Engine / trim | Notes |
|---|---|---|---|
| Subaru WRX STI VA | 2015–2021 | EJ257 2.5T |
Every order is confirmed with our supplier before your card is charged. Once confirmed, parts ship from our partner warehouse and you receive tracking by email.
Need to return something? See our Shipping, Returns & Order Policy policy.

Pistons
$1,179.16 USD
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