Kuhl Racing Rear Diffuser for 2015-16 Subaru WRX STi [VAB] (Kouki)


Kuhl Racing Rear Diffuser for VAB Subaru WRX STI (Kouki)

Part Number: N/A Vehicles: , , Brand:

Please note that products from this brand are not typically kept in stock, and are made-to-order. As these products must be manufactured and then imported from Japan, lead times will vary. Following your order, a representative will contact you to explain the order process, and provide an estimated timeframe for delivery. Following the discussion, should you choose to continue with the order, please note that as the parts will be made for you, there will be no further option for cancellation (if there are any concerns regarding lead time, please advise us immediately during the initial follow-up). At the time of the initial contact and after being informed of the estimated lead time, should you choose to cancel, you may do so within 1 business day. You are encouraged to read and understand the full terms and conditions of the sale here.


Kuhl Racing’s rear diffuser for the late model (kouki) VAB Subaru WRX STI.

The rear diffuser is designed to be used in conjunction with Kuhl’s rear bumper cover, and is available in three different versions, each with a different construction:

  • RG Type – 2-layers of FRP
  • SG Type – 3-layers of FRP (extra strength / stiffness)
  • HG Type – FRP + Carbon Fiber


Please note, the rear diffuser must be used in conjunction with Kuhl’s rear bumper cover.