Model S / Model S Plaid – Front Upper Control Arm Set – Ultimate Edition (FUCA) (2021 – 2026+)

The FUCA handles the front end; the rear is a separate system. If you have lowered the car or want a balanced track alignment, pairing these with the adjustable rear camber arms lets you correct the whole car rather than only the front. Many owners run both so front and rear geometry match. You can start with the FUCA and add the rear arms later as your goals grow.

The arms are built for accessible adjustment, with turnbuckles and bottom-access points you can reach on the car, and the flip pill speeds camber changes. That said, dialing in final numbers still calls for a proper alignment on a rack. Owners near Los Angeles can have our Hawthorne shop install and align them together. Once set, the pill lets you flip between your street and track figures without a full realignment each time.

They earn their keep on both. For track and race use, this is how you get maximum front grip and run real camber on slicks. For the street, adjustable caster and toe plus modest camber sharpen turn-in and can neutralize uneven tire wear from lowering. The build quality is deliberately over-spec, so nothing about running them daily is a compromise. Buy them if you want the front end you can actually tune.

Not on its own. The Magnuson-Moss Warranty Act means Tesla has to show the arm caused a specific failure before denying a related claim, so the swap by itself is not grounds for blanket denial. Keep your factory upper arms if you want the option to return to stock. Our suspension products are backed by our own guarantee alongside that federal protection.

This FUCA set gives you full adjustment of front camber, caster, and toe, all reachable within minutes. The factory arm is essentially fixed, so you are stuck with stock geometry. With easy-access turnbuckles and bottom-access adjustment points, you can set the front end for grip on track or comfort on the street. That range is why serious Model S owners start here when they want to actually tune the front.

A lot, more than almost anyone needs on the street. On our race car we maxed out at 5.8 degrees of negative camber on the race pill setting and 3.8 degrees on the street pill setting. For reference, our fastest race-slick setup uses about 4.0 degrees of front camber, which these handle easily. They can also go positive to offset a lifted, overlanding ride height. Actual limits shift with your ride height and spring or shock combination.

It is a flip pill that lets you jump between a street camber setting and a race camber setting quickly, and it is covered by U.S. Patent No. 11,926,362. Rather than re-shimming everything, you flip the pill and you are in a different alignment window. That is what makes moving between a daily setup and a track setup a matter of minutes. The FUCA ships with the pill already installed.

Yes to both. The set fits the 2021 through 2026+ Model S and Model S Plaid, and it replaces Tesla front upper control arm part numbers 1420321-00-B on the left and 1420326-00-B on the right. It is not a pre-2021 part, so an older Model S needs different arms. Match your car to the 2021+ range and these bolt in as a direct replacement.

Each arm is a monoblock of aircraft-grade 6061-T6 billet aluminum, CNC-machined and laser-etched with LH and RH markings, then finished in a corrosion-resistant Cerakote clear coat that shows off the metal. The design is asymmetrical and massively rigid around the ball joint, and it was FEA-simulation optimized for static, dynamic, and fatigue strength. The shape is sculpted in CAD to keep suspension travel and clearance at full compression, and the joint itself is a serviceable wear item with its own replacement ball joint down the road.

No. These use a sealed spherical bearing of the silent, low-vibration OEM type, so you get the precision of a race joint without the harshness a raw uniball transmits into the cabin. We have set multiple racing records on these arms, yet you can still drive to work in quiet, Autopilot-enabled calm. The sealing is what lets the same part serve the track and the daily commute.

Tesla’s warranty covers factory-installed parts, but it does not automatically void your warranty if you install aftermarket components like Unplugged Performance brake kits. Under U.S. law (Magnuson-Moss Warranty Act), Tesla must prove that an aftermarket part caused a failure in order to deny warranty coverage. Our parts are engineered to work harmoniously with Tesla OEM Brake systems and can be professionally installed by Unplugged Performance in Hawthorne, CA or by an authorized installer to minimize risk. That said, any damage directly caused by misuse or improper installation may not be covered. We recommend retaining all factory parts so you can revert to stock if needed. Many Tesla owners enjoy peace of mind by using Unplugged Performance products, which are extensively tested and installed by certified professionals. If warranty concerns are top-of-mind, our team can help clarify compatibility and installation best practices to ensure a worry-free experience.

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.

Installing aftermarket parts does not automatically void your Tesla warranty. Under the Magnusson-Moss Warranty Act (www.sema.org/sema-enews/2011/01/ftc-validates-right-to-install-aftermarket-parts), a manufacturer cannot void your warranty simply because you installed aftermarket parts. Tesla must prove that the aftermarket part caused the specific failure in question to deny a warranty claim. UP recommends retaining all factory parts to allow reverting to stock if needed. 

To find authorized installers or retailers of Unplugged Performance products in your area, please use the form on our website to provide your location details. This will help us connect you with an authorized installer nearby. You can find the form here.

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.