Skip to main content
My Account My Account
Menu
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

-

quick product info sheet

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.

Buy this product and earn 1995 UP Points.

Include Diffuser Fins?

UP-MS-105-3.1

Want to have this part installed at Unplugged Performance?

Local to the Los Angeles area and want your parts professionally installed? Our team will contact you with a price quote and appointment availability.

SKU: UP-MS-105-1.1
Guaranteed Safe Checkout
Payment Options - American Express, Discover, Visa, MasterCard, JCB, Maestro Credit Cards Payment Options - Apple Pay, PayPal, Splitit, Diners Club International, Union Pay Credit Cards
GOOD NEWS! WE SHIP WORLDWIDE
Shipping rates apply, and you’ll see the final cost at checkout so there are no surprises. We also offer freight shipping for bigger orders, so please make sure to contact us before ordering if you plan on ordering a larger volume of parts.
NEED HELP? SPEAK TO AN EXPERT

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.

Customer Reviews

Need help?

    Find an installer

      Allow our team to connect you with a local authorized installer.


      Frequently Asked Questions - F.A.Q.
      Everything you need to know about this product before you buy.

      What does the Unplugged Performance product warranty cover?

      Unplugged Performance offers a comprehensive warranty on all parts and installations performed by our certified technicians. Warranty coverage applies to defects in materials and workmanship on items including lowering springs, coilovers, big brake kits, brake pads, stainless steel brake lines, shocks, and more. Should any covered part fail under normal use or display premature wear, we will repair or replace it at no additional cost—assuming the component was installed by us or at one of our authorized partners.

      This warranty is valid for 2 years or 24,000 miles, whichever comes first, excluding consumable products like brake pads, rotors, and tires, starting from the installation date. Coverage extends to labor for warranty repairs when performed by Unplugged Performance or an authorized installer. It does not cover damage resulting from misuse, accidents, off‑road use, improper installation not done by us, or modifications that aren’t factory-approved.

      To file a warranty claim, simply contact our service team. We’ll guide you through inspection, shipping (if needed), and repair or replacement logistics. transparencia and top-tier support are what you can expect from Unplugged.

      Will Tesla void my warranty if I install aftermarket parts?

      A vehicle’s comprehensive warranty as a whole may not be voided due to use of aftermarket parts per the Magnusson-Moss Warranty Act (www.sema.org/sema-enews/2011/01/ftc-validates-right-to-install-aftermarket-parts). However, a manufacturer may require a customer to pay for parts and labor for a repair if there is direct causation between a customer’s alteration and the product or service repair being requested. It is in both manufacturer and customer’s interest to follow logic and reason so that the system of good faith is not abused. If this topic interests you please read the law as well as your warranty documentation. Ultimately we are Tesla owners and enthusiasts, we are not lawyers and cannot provide legal advice.

      What are the shipping options and times?

      Unplugged Performance processes orders quickly, typically within 1–2 business days after placement. For U.S. customers, orders under $50 usually ship via FedEx SmartPost with an estimated delivery time of 2–7 business days. Larger items like body kits or bumpers may ship via freight carriers with curbside delivery; customers will be contacted to schedule a delivery window. International shipping is available to most countries, with shipping costs calculated at checkout. Delivery times abroad vary, generally ranging from 5 to 16 business days depending on destination. Import duties or taxes are the customer’s responsibility. To ensure a smooth shipping experience, provide accurate contact information during checkout. For specific questions or shipping quotes, Unplugged Performance’s support team is available to assist.

      Do you offer international shipping?

      Yes, Unplugged Performance ships to customers worldwide with no restrictions on destination countries. Whether you live in Canada, Europe, Australia, or elsewhere, we can deliver your order directly to your doorstep. We do not charge any additional fees or convenience charges for international payment processing—what you see at checkout is what you pay. Shipping times vary depending on the destination and customs processing, typically ranging from 2 to 6 weeks. Please note that customers are responsible for any import duties, taxes, or customs fees imposed by their country, which are separate from our charges. Orders are processed in the order received, and while made-to-order items cannot be refunded once production begins, defective or damaged shipments are eligible for exchange. If you have questions or need help with your international order, our support team is available to assist you promptly.

      Unplugged Performance - Frequently Asked Questions Background Image
      Unplugged Performance Reviews Section Footer Background Image

      WHAT OUR CUSTOMERS SAY

      RATED 4.97 Rating Star Rating Star Rating Star Rating Star Rating Star (372 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.

      Tesla Model 3 High Efficiency Carbon Fiber Trunk Spoiler
      RATED 5.0
      Rating Star Rating Star Rating Star Rating Star Rating Star
      Tesla Model 3 High Efficiency Carbon Fiber Trunk Spoiler
      Bought it years ago and it’s still in perfect condition. Super high quality carbon, no yellowing and still sticks on hard to the car! Looks stunning as well.
      Andrew P. September 29, 2022
      Tesla Model Y Billet Adjustable Rear Camber Arm Set
      RATED 5.0
      Rating Star Rating Star Rating Star Rating Star Rating Star
      Tesla Model Y Billet Adjustable Rear Camber Arm Set
      I was tired of replacing my rear tires all the time, between the power and weight of the Model Y P, this camber finally allowed me to dial in my alignment for tire wear and better traction. Will pay for itself with tire savings.
      Jorge (. August 23, 2022
      Tesla Model S / Plaid - Superlight Carbon Ceramic Front Big Brake Kit (BBK)
      RATED 5.0
      Rating Star Rating Star Rating Star Rating Star Rating Star
      Tesla Model S / Plaid - Superlight Carbon Ceramic Front Big Brake Kit (BBK)
      I love my brake kit! One of the only things I didn’t like about my Model S Plaid was how under braked it was and these made a massive difference. By far the best upgrade I have made so far. I plan on tackling my suspension next.
      jorgend271 September 23, 2022
      Tesla Model 3 / Performance - Dual Rate Linear Lowering Springs Set
      RATED 5.0
      Rating Star Rating Star Rating Star Rating Star Rating Star
      Tesla Model 3 / Performance - Dual Rate Linear Lowering Springs Set
      These springs were the first real mod I’d ever done to my Tesla and I’m so happy with the way they turned out. They really complete the look on my model 3. And I was surprised to find you don’t sacrifice anything in terms of ride comfort by adding them. The only problem is that now that I’ve...
      blake.p.aaron December 21, 2023
      Tesla Model 3 Ascension Front Fascia System (Front Bumper)
      RATED 5.0
      Rating Star Rating Star Rating Star Rating Star Rating Star
      Tesla Model 3 Ascension Front Fascia System (Front Bumper)
      This is by far the best front fascia out there and its makes the Model 3 look so much better! It gives it a much sportier look and I get comments on it all the time. One of the simplest upgrades that makes a huge difference as far as the look of the car goes. Couldn't be happier with how it looks....
      thecliff03 October 16, 2023
      Model X Superlight Carbon Ceramic Front Big Brake Kit (BBK) (2014-2020)
      RATED 5.0
      Rating Star Rating Star Rating Star Rating Star Rating Star
      Model X Superlight Carbon Ceramic Front Big Brake Kit (BBK) (2014-2020)
      Ross is the most awesome - extremely helpful in the purchasing process of this BBK - not only I got in red, Ross was able to build it without the logo, send me custom dry transfer decal for me to have a full custom look. This brakes stops radically better than OEM. For a car as heavy as the Model X,...
      Alfred C. September 27, 2022
      Tesla Model 3 Billet Adjustable Rear Camber Arm Set
      RATED 5.0
      Rating Star Rating Star Rating Star Rating Star Rating Star
      Tesla Model 3 Billet Adjustable Rear Camber Arm Set
      Got these with my order of Moderate Springs and Street/Track Sway-bars and they do what they are intended to do. Got my alignment darn near within spec which will help with tire wear. I haven't had them for long so I can't comment on durability but they sure are built sturdy as hell. If you are...
      850arrrsaylikepirate December 19, 2022
      Tesla Model Y UP Forged UP-RW Road Warrior Wheel (Set of 4)
      RATED 5.0
      Rating Star Rating Star Rating Star Rating Star Rating Star
      Tesla Model Y UP Forged UP-RW Road Warrior Wheel (Set of 4)
      I purchased this wheelset after repeatedly denting my OEM wheels via Pennsylvania pothole mayhem. A friend recommended them, and they are marketed as bulletproof. The reason for my purchase was utilitarian, but I was pleasantly surprised by how much better they look in person than online …. They...
      Mike P. April 08, 2026
      Tesla Model 3 Brake Pads - Competition & Racing Spec
      RATED 5.0
      Rating Star Rating Star Rating Star Rating Star Rating Star
      Tesla Model 3 Brake Pads - Competition & Racing Spec
      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
      Tesla Model 3 Stainless Steel Sport Brake Line Set
      RATED 5.0
      Rating Star Rating Star Rating Star Rating Star Rating Star
      Tesla Model 3 Stainless Steel Sport Brake Line Set
      Upgrading to stainless steel brake lines is a nice upgrade and an absolute must if you are planning to hit the track. I’ve taken my Tesla to Tesla Corsa a few times, and the improved pedal feel and reliability you get from these lines and high-performance pads is well worth it. Having this work...
      D April 10, 2026
      Unplugged Performance Newsletter
      Subscribe to our Newsletter
      Sign up to get the latest updates on UP Products, news, galleries and offers!
      Please select all Tesla models you are interested in:
      FEATURED IN
      TeslaRati Logo 1
      Automobile Magazine Logo 1
      MotorTrend Logo 1
      AutoBlog Logo 1
      TopGear Logo 1
      Car and Driver Logo 1
      Road and Track Logo 1
      The Drive Logo 1
      AutoWeek Logo 1
      The Joe Rogan Experience Logo 1
      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.
      Tesla Model X - Premium Aftermarket Upgrades And Wheels
      Tesla Model Y - Premium Aftermarket Upgrades & Wheels
      UP.Forged Wheels
      GUARANTEED SAFE CHECKOUT WITH THESE PREMIUM PAYMENT OPTIONS
      Payment Options - American Express, Discover, Visa, MasterCard, JCB, Maestro Credit Cards Payment Options - Apple Pay, PayPal, Splitit, Diners Club International, Union Pay Credit Cards
      TESLA, TESLA MOTORS, and all related brands, marks and intellectual property including but not limited to TESLA ROADSTER, TESLA CYBERTRUCK, MODEL S, MODEL 3, MODEL X, MODEL Y, and the "TESLA," "T" logos designs are trademarks or registered trademarks of Tesla Motors, Inc. in the United States and other countries. Unplugged Performance has no official relationship with Tesla Motors.
      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
      COPYRIGHT © 2026 UNPLUGGED PERFORMANCE®. ALL RIGHTS RESERVED.
      THE UNPLUGGED PERFORMANCE® MARK AND LOGO ARE TRADEMARKS OF UNPLUGGED PERFORMANCE INC. ALL RIGHTS RESERVED. PLEASE REVIEW THE TERMS & CONDITIONS AND PRIVACY POLICY BEFORE USING OUR WEBSITE.
      close