Tesla Model S / Model S Plaid (2021 – 2026+) Billet Rear Trailing Arm Set (Lower Aft Link)
$558.75
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Product Details
Tesla Model S / Model S Plaid (2021 – 2026+) Billet Rear Trailing Arm Set (Lower Aft Link)
Our advanced Model S Plaid suspension development and racing kicked off in June 2021 with our race car Dark Helmet as we set out to develop the ultimate performance handling Model S. The results have followed as we brought home to the Tesla community a Pikes Peak class victory and multiple production based EV lap records with our development race car. In the months that followed we’ve gone into production with a premium range of suspension components that can be purchased individually or as a comprehensive lineup depending on the goals of each driver. All of our suspension development begins with precision 3D scanning of the car’s suspension to develop a working digital model, then followed by real-world racing and street use internally on our company vehicles before roll out to the public. Our history, race results and industry-leading warranty provide peace of mind that these are the best money can buy.
Billet Rear Trailing Arm Set (Lower Aft Link)
These Unplugged Performance Billet Rear Trailing Arm Set (Lower Aft Link) for Tesla Model S Plaid and LR 2021+ vehicles replaces the standard Lower Fore Link with a stronger and lighter billet aluminum version with high performance sealed spherical bushings. The upgraded bushings provide both silent operation and improved handling feel and durability. The new 2021+ Model S features an all-new 5 link rear suspension that we have precisely re-engineered for performance driving.
- CNC-milled 6061 aluminum for maximum strength while saving weight
- FEA-simulation optimized to ensure superior static, dynamic, and fatigue strength
- Sealed spherical bushings for unmatched precision and durability with silent operation
- Replaces Tesla part number RR LOWER AFT LINK, P2 1420452-99-C
- We recommend pairing this item with our full suite of rear suspension products for your vehicle:
- Billet Adjustable Rear Camber Arm Set (Fits Model S/X 2021+)
Billet Adjustable Rear Toe Arm Set (Fits Model S/X 2021+)
Billet Rear Traction Arm Set – Upper Fore Link (Fits Model S/X 2021+)
Billet Rear Lower Arm Set – Lower Fore Link (Fits Model S/X 2021+)
Rear Sway Bar – 3 Way Adjustable
- Billet Adjustable Rear Camber Arm Set (Fits Model S/X 2021+)
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Why replace factory rubber bushings with sealed spherical ones?
Rubber bushings flex under cornering and braking, which lets the wheel move slightly and blurs your inputs. The sealed spherical bushings on this arm remove that slop for more precise, consistent wheel location, and being sealed they also operate silently and resist wear. You get the sharper feel and durability of a spherical joint without the harshness or noise that open uniballs can introduce on a street car.
Does this trailing arm set fit the 2026 Model S?
Yes. It is designed for the Tesla Model S and Model S Plaid from 2021 through 2026 and up, covering the all-new five-link rear suspension Tesla introduced on the current car. The set replaces Tesla part number 1420452-99-C, the rear lower aft link, and the SKU is UP-MSMX2-113-1.1. An early 2021 Model S and a current-generation car both take this same arm.
What is this arm made of and how is it validated?
It is CNC-milled from 6061 aluminum for maximum strength while saving weight, and it is optimized with FEA simulation to ensure strong static, dynamic, and fatigue performance. The design was stress-modeled before production, so the strength is engineered rather than assumed from how it looks. Unplugged Performance developed its Model S suspension program on the Dark Helmet race car, so parts like this come from real racing and street testing before public release.
Can I install the billet trailing arm myself?
It ships next business day and is a bolt-in replacement for the factory lower aft link, so a capable owner with a lift and proper tools can fit it, ideally followed by an alignment. If you would rather not, Unplugged Performance can install it at our Hawthorne shop and our team will provide a quote and appointment. Because it is a suspension link, correct torque and a follow-up alignment matter for the best result.
Do billet suspension arms affect my Tesla warranty?
Installing them does not automatically void your Tesla warranty. Under the Magnuson-Moss Warranty Act, Tesla would have to prove the aftermarket arm caused a specific failure to deny a claim, so keep your factory link if you want the option to revert. Unplugged Performance also backs its suspension parts with an industry-leading warranty, which is part of why the company positions these as the best money can buy.
