HT Autos

HT Autos Rear Diffuser

- 2015+ WRX / 2015+ STI

Ships for free in the 48 states


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ABS plastic rear diffuser with hardware.


ABS plastic diffuser to fit Model Year 2015 WRX or STi. Comes with all hardware required for installation.

Designed and manufactured by HT Autos Subaru UK.

NOTE: Does not come painted.

1 customer review

Average rating
(based on 1 review)
Ease of Installation
Fit / Quality
Overall Satisfaction
  1. Nice Product Overall - Install was a little challenging

    By Drew May 18, 2016

    I had already purchased HT Autos' full body kit, so I bought the rear diffuser to round it off. The fit was very good and took me about an hour and a half to install. There are no instructions or videos I could find; however, and because of this, the install was a bit of a challenge. You have to take the spare tire out of the trunk and drill holes through the two rubber drain gaskets in the tire basin to install two of the included bolts. After much effort with these bolts, I realized the two supplied for this part of the installation were too short. I had to use longer ones. All of the other bolts and supplied push-pin screws were fine. You have to drill a total of eight holes to install this item. It's not hard to figure out, but took some doing. In the end, it looks great and really compliments the rest of the body hit. It's the same color and material, so the match is perfect. It seems to be fairly solid ABS too and should resist scratches and dings. You will need two people to do this when you get to the two bolts in the spare tire basin.

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