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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.

      I'm currently putting together my custom UP INVINCIBLE® kit from Unplugged Performance with the help of Frank, and the transformation is insane. The lineup includes the HD Front Bumper with the optional 11-inch LED light bar that absolutely lights up the night, the bulletproof Heavy Duty Rear...
      CyberRiri December 03, 2025
      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!
      jesus.ruiz.2389 February 02, 2023
      I have both the rear camber arms and the rear toe arms together making the rear alignment easy and quick to change. I adjust back and forth between street alignment for daily commuting and autocross race alignment for race day. These are easy to use and the settings are very repeatable. Customer...
      Joseph A. April 05, 2025
      I'm currently putting together my custom UP INVINCIBLE® kit from Unplugged Performance with the help of Frank, and the transformation is insane. The lineup includes the HD Front Bumper with the optional 11-inch LED light bar that absolutely lights up the night, the bulletproof Heavy Duty Rear...
      CyberRiri December 04, 2025
      Very nice shirt that allows me to represent the best in Tesla aftermarket. Pleasure doing business and I look forward to working with UP forever.
      Christian N. January 01, 2026
      I really like how understated this lip is. It blends in perfectly with the existing bumper but you can still tell there is something unique about your car when it's installed. I have a grey model 3 and purchased the painted one. Although the site says it's not the exact same as the factory color, I...
      matt.iijima May 22, 2023
      This spoiler has a perfect balance. It isn't as subtle as the OEM performance Teslas, yet not comically large. A fitting addition to the Plaid! Great design as is to be expected from Koenigsegg. Slight efficiency gains at high speeds as well.
      Ravi October 03, 2022
      I'm currently putting together my custom UP INVINCIBLE® kit from Unplugged Performance with the help of Frank, and the transformation is insane. The lineup includes the HD Front Bumper with the optional 11-inch LED light bar that absolutely lights up the night, the bulletproof Heavy Duty Rear...
      CyberRiri December 04, 2025
      The UP-03 lightweight & strong wheels are by far THE best wheels I have purchased for my Teslas. These wheels are installed on my Model 3, Y & X. These wheels not only turn heads but also improve efficiency and noticeable difference in speed due to their light weight characteristics. These wheels...
      f1dinesh August 12, 2023
      I bought 2023 Tesla Model Y in December 2022 and immediately noticed rough and bumpy ride. I contacted Tesla service, assuming that something is broken, but they confirmed that this is how stock suspension supposed to feel. Fortunately an aftermarket solution exists. I ordered Luxury Coilover Kit...
      dmitryshnayder July 12, 2023
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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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