Tesla Model Y – Ascension Rear Carbon Fiber Diffuser With Hitch Cover & Tow Hook Cover


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The long wait is finally over and our Model Y Ascension Rear Diffuser is finally here in glorious carbon fiber! Blending more aggressive aerodynamics with the Model Y’s signature rear lines, our rear diffuser is designed to bring out the performance the Model Y can deliver. Our included hitch and tow covers keep all the functionality of the stock rear diffuser for towing or track use for a no-compromise upgrade. This is a full replacement rear diffuser, not a stick-on cover. It was worth the wait!


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The concept of Ascension to us means bringing the underlying Tesla vehicle to a higher level. With the Model Y Ascension Rear Diffuser, we have kept the Y’s original soul in a more aggressive and premium package.  In this, case the original Tesla Model Y has a unique rear diffuser line that dips down in the center to encapsulate the tow hitch cover and we wanted to carry that design DNA into a more aggressive and track-focused rear diffuser by maintaining the original design but moving it upward to give the diffuser the visual weight of being much lower than the original diffuser.  We have also created a side profile that also provides a lower visual weighting for the Y to bring the bottom of the rear fascia inline with the side skirts and let the disrupted air from the rear wheel well and tire flow back cleanly around the rear of the vehicle.

When paired with the Unplugged Performance Tesla Model Y front fascia (bumper) and the Unplugged Performance Tesla Model Y High Efficiency Trunk Spoiler it creates a unique aerodynamics package for the “world’s fastest SUV.”

Diffuser package includes:

  • Rear Diffuser (aka Rear Fascia Lower) in Pre-Preg Carbon Fiber
  • Rear Tow Hook Cover in Pre-Preg Carbon Fiber
  • Rear Hitch Cover in Pre-Preg Carbon Fiber

This product replaces the following Tesla original parts:

  • REAR FASCIA, LOWER 1494006-00-B
  • COVER TOW HITCH 1494009-00-A
  • TOW HITCH COVER 1494009-00-B


  • This product requires the original Tesla rear reflectors but does NOT include them as we anticipate you will reuse your existing reflectors.  If you need to purchase the reflectors due to damage incurred to your vehicle please purchase them (LAMP ASY, REAR REFLEX, LEFT HAND 1495817-00 and/or LAMP ASY, REAR REFLEX, LEFT HAND 1495817-00) as needed before installing.
  • Customers worried about potential rock chips in the gloss clear coat are recommended to install paint protection film before installation.  There is no warranty on visual damage from rocks or other road debris and the rear fascia is located in an area where they will sustain regular impacts.  The original parts are made of plastic in this area to reduce road debris damage.  Carbon fiber is much more susceptible to this sort of surface damage.  The effectiveness of the diffuser will not be degraded by visual blemishes.
  • Due to the height of the Model Y, the effectiveness of any ground effects is largely negated by the ride height. Customers looking to improve the aerodynamic efficiency of the vehicle through this modification may not see significant gains at reasonable ride heights.
  • Professional installation is highly recommended.


Tesla Model Y

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PLEASE NOTE: For international orders, customs fees, duties or taxes are the sole responsibility of the purchaser.



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What our customers say
Shout out to Andrew at Unplugged Performance! Customer service is excellent. Great communication with everything. Knowledgeable about all products. Will do more business with UP.
Oh, wow; it is insane that one bar can dramatically alter the dynamics of the car. It is so much more planted and stable during those freeway maneuvers, which was the primary reason I bought the bar. The car is just solid at all speeds. Really solid. What is shocking is that the comfort levels seem...
Excellent product! I installed mine as my first step into getting some more performance out of my M3P for Autocross. The front and rear sway bars along with some wider wheels and stickier tires really took my lap times to the next level. I would say, if you drive hard with these sway bars like I...
My 2019 Performance Model 3 is great, but with the heavy weight of this EV the cornering at high speeds was disappointing. I recently added these Dual Rate Lowering Springs to the UP Sway Bars, and the handling is definitely getting better! The initial spring rate makes the bumps less jarring with...
Moto Miwa definitely made the right recommendation for the Moderate Lowering springs for my Model 3 Performance. They gave it the perfect balance between drop and functionality - good ride quality and no scraping. Also, in another conversation regarding tire wear, Moto suggested I purchase the...
On the track or not these sway bars make your car feel solid on turns. Immediately I noticed improved corner turns which is great! Highly recommend!
The shop we had these installed was a 1.5 hour highway drive away so the trip home was a great test to see if we liked them (we live in NC). It was immediately noticeable that the ride of our 2021 Y was softer and bumps were not as hard. We had the shop set our coilovers to setting number "3" and...
Had the bars installed with the end links on my M3P, at the same time lowered with performance springs and got new tires. No regrets. The car rides flat af. I look forward to round-abouts now. Big ups to UP.
Purchased these with the luxury coilovers but kept things at stock ride height. So far, everything is great!
I've covered innovation in the vehicle space for a long time. Mercedes Benz gave me its first ride in its first autonomous vehicle. BMW drove me around SXSW in the first i3 electric all week long. I wrote four books on technology, predicting with each decade-long trends. I have the first video on...
These are exactly what I was expecting. I waited over a year for them. Pandemic backorders and all. It took me about 6 hours to install with help from a friend. The fronts were the worst part. You have to have the spring compressors mounted just right and really compress them a lot to assemble the...
I have my model 3 performance and love it and now after adding these coil overs, can’t comprehend why these aren’t stock for tesla. These coil overs are amazing automagically felt like the car was on a cloud, handles great, and very smooth. Noise is reduced and can not believe I took this long...
Paint match was perfect. Fit is perfect. It’s exactly what I was looking for, exceeded expectations.
I purchased these as set with my coil overs and these are definite must to install. These bushing add great handling to your steering. Steering is more accurate and responds well to the drivers needs. Highly recommend!
If love carbon fiber like I do then this is a must. Nothing compares to UP carbon coaster. The weaves are super clean, very sturdy, looks great. I couldn’t help myself and got this to add to my carbon collection.
These dual rate springs were the most noticeable and effective upgrade I've made to my Model Y. Much better handling and comfort compared to the stock standard rate springs.
I wanted to wait a few weeks before leaving my review to really see if there was a significant difference and it is a significantly better ride. I commute 70 miles a day on a fairly rough socal highway and the change is noticeable. Yes, you’re still going to feel the bumps but they are not as...
Received my suspension for my Y 2022 long range what a difference. Set it for 8 on the adjustment rides totally different what a great job took it to a friend of mine Frank Reyes to install Desert car medics said the product was very well made installed it in about 5 and 1/2 hours. Driving it for a...
These brakes perform great and I should have upgraded to these a long time ago. Pedal travel with with the included brake lines are much improved as well.
LOVE my new UP-03 wheels. Super light, super strong and they look so good. Super high quality finish on the wheels too, worth every penny. Have had the wheels for just a few days and have gotten tons of compliments on the road and at the track. These are the best wheels you can buy for your Tesla,...
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