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Rear Under Spoiler and Diffuser System for 2012-2016.5 Tesla Model S
Rear Under Spoiler and Diffuser System for 2012-2016.5 Tesla Model S
$1,995.00

Rear Under Spoiler and Diffuser System for 2012-2016.5 Tesla Model S

$1,995.00

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This product has been discontinued. Please refer to the other 2012-2016.5 Tesla Model S Exterior upgrades here!

The performance and aerodynamics of a car are often best visible at the rear and this Rear Under Spoiler/Diffuser system lets people know that your Model S is a serious performance car.

The design is a mix of functional aggressiveness and it takes Tesla’s factory rear diffuser design to a new level. The subtle elongation of the rear diffuser enhances the air diffuser effect Tesla has already designed into the car. All five of Tesla’s functional underbody diffuser fins are kept intact and well integrated into the new design.

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Include Diffuser Fins?

UP-MS-105-3.1

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SKU: UP-MS-105-1.1
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Product Details Product Details

The performance and aerodynamics of a car are often best visible at the rear and this Rear Under Spoiler/Diffuser system lets people know that your Model S is a serious performance car.

The design is a mix of functional aggressiveness and it takes Tesla’s factory rear diffuser design to a new level. The subtle elongation of the rear diffuser enhances the air diffuser effect Tesla has already designed into the car. All five of Tesla’s functional underbody diffuser fins are kept intact and well integrated into the new design.

Available without the fin panel for a subtler look, or choose the fin panel option for a more aggressive aesthetic.

This part is offered in the following finishes: unpainted, premium factory color paint, or in beautiful carbon fiber. The Unplugged Performance Rear Under Spoiler and Diffuser System is designed and produced to the highest quality levels in Hawthorne, California.

Starting September 2015: All rear under spoiler/diffuser systems in either unpainted or painted variations are produced in a Tesla factory style of impact resistant urethane. This production method allows significant durability as the material rebounds to the factory shape after experiencing an impact. The carbon fiber option remains as carbon fiber for those looking for supercar grade lightweight construction.

Compatible with all Model S variants produced before Spring 2016.

Tesla’s production of the Model S utilizes many ongoing minor adjustments which occur often without public announcement and without following a traditional model year cycle. As a result of our experience, we produce multiple variations of our parts to ensure a best fitment match Tesla’s many publically undocumented variations. For our research and development to benefit your order please provide us with the production month/year, trim specs, color, and VIN when you submit your order.

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      WHAT OUR CUSTOMERS SAY

      RATED 4.97 (305 REVIEWS)
      LEAVE A REVIEW

      With real reviews from real customers, shop UP products for your Tesla Model S, 3, X, Y and Cybertruck with confidence. Leave reviews and earn up to 2000 UP Rewards points each, redeemable towards exclusive UP Products.

      Product is top notch when I installed them it was like switching from a 1 piston sliding caliper to a bbk. Also cold performance and noise are really good
      Christos K. November 04, 2022
      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...
      scobleizer February 28, 2023
      Absolutely love it. Compliments on it all the time. I've had people compare the look to a Porsche or even a McLaren. Beyond the good looks, it also gave me some better front downforce. I often take my car to the track and some hard canyon runs so the functionality of it was pretty important to me.
      Andrew P. September 16, 2022
      I have been using my 2021 Model Y Long Range with the UPP Sway Bars for a bit over a week now and I can say that from the process from ordering to finally driving my car around has been extremely painless. I ordered my sway bars and a immedietly I was in contact with customer support to ensure that...
      saketh.kollu October 03, 2022
      I have a Tesla Model 3 LR but the rep at UP accidentally ordered the MY listing instead which is the same since both M3 and MY share most parts including struts. Purchased as the roads in DC just aren't very pleasant and combined with Tesla's stock struts, it's pretty horrendous. Delivery took...
      ethanwwm March 11, 2024
      Paint match was perfect. Fit is perfect. It’s exactly what I was looking for, exceeded expectations.
      Edmundo R. January 10, 2023
      These wheels deliver. I've been looking for wheels that look good and can maintain efficiency. These wheels hit both marks and have the added bonus of durability.
      Cory O. September 30, 2025
      As part of my purchase of the Luxury Coilover Suspension for my Model Y, I included both the Front Upper Control Arms and Rear Camber Arms, to mitigate any issues with uneven tire wear. When I purchased the UP / BBS Flugplatz wheels with tires, I was relieved that the additional 2 pieces were...
      p.flores September 16, 2022
      SUBLIME... best description not only does this make your Y look HOT, it make bumps better! Quicker recovery, firmer turns, everything is better! and Blake is the best advisor out there. Pays attention, follows up and ensures everything is working as expected from delivery to install. Great team!!!
      forthestores June 27, 2023
      Bryan L. December 05, 2025
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      Unplugged Performance is the world leader in premium performance upgrades for Tesla vehicles. With our USA-made line of stylish and high-performance parts, our sole focus is on holistic development and improvement of all Tesla cars.
      Unplugged Performance was founded and incubated by the team behind the world-renowned automotive customizer Bulletproof Automotive. Unplugged Performance is the world's leading company focused on the customization and sports performance of Tesla Motors vehicles.
      All of our parts are researched and engineered on our own development vehicles with the intention of improving every aspect of the driving and ownership experience. Unplugged produces an exclusive range of premium upgrades to give a new sporty performance identity to Tesla Model S, Model X, Model 3, Model Y, and the Cybertruck.
      Improving on perfection is no easy task, and to do so Unplugged products are professionally designed, prototyped, and manufactured in-house in Hawthorne, CA, and in collaboration with the best motorsports suppliers. The supercar performance of Tesla vehicles meets supercar-grade enhancements with Unplugged Performance.
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      THESE PRODUCTS CAN EXPOSE YOU TO CHEMICALS WHICH ARE KNOWN BY THE STATE OF CALIFORNIA TO CAUSE CANCER, OR BIRTH DEFECTS, OR OTHER REPRODUCTIVE HARM. FOR MORE INFORMATION PLEASE VISIT WWW.P65WARNINGS.CA.GOV
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