Tesla Model X / Model X Plaid (2021+) Billet Rear Lower Arm Set (Lower Fore Link)

This link is one of the arms in the Model X’s rear multi-link setup, and its job is holding the wheel located as the suspension cycles. Swapping the factory piece for this billet aluminum version on sealed spherical bushings removes the play the soft rubber allows, so the wheel is held more precisely. You get sharper feel and better durability. On the 5-link rear, every arm feeds into how planted the car sits.

It fits the 2021+ Model X and Model X Plaid, which share the all-new 5-link rear suspension. Priced at $637.36, down from $775.00, it carries SKU UP-MSMX2-115-1.1 and dispatches the next business day. The same pair of arms fits both trims, with no separate Plaid part number.

It replaces Tesla part number 1420441-00-D, the rear lower fore link, two per vehicle. This is a direct-fit swap for those factory arms and comes as a pair so both sides of the rear axle are upgraded together. Matching the exact part number means no adaptation or guesswork at install.

CNC-milled 6061 aluminum with sealed spherical bushings at the pivots. The aluminum keeps them strong while shedding weight versus the original, and the design is FEA-optimized for static, dynamic, and fatigue strength. The spherical bushings give precise location and silent operation. It is the same construction philosophy we use across the Model X rear arm range.

They trade a little of the factory’s soft compliance for sharper precision. A rubber bushing absorbs some harshness but also lets the arm move under load, which softens the car’s responses; a sealed spherical bushing locates the arm firmly and stays quiet doing it. You get crisper, more connected handling feel. For a driver who wants the Model X to feel tighter, that is the point.

Either works, but we recommend pairing it with the full rear set for the complete effect. On its own it firms up one link; combined with the rear camber and rear toe arms, the whole rear axle moves with the same precision and holds alignment better. Many owners build the rear end up as a group rather than one link at a time.

Yes. Our Hawthorne facility can fit these and check the rear alignment afterward; request a quote through the page. Because they ship the next business day, there is minimal wait. Owners outside the Los Angeles area can use any shop experienced with the Model X rear suspension, since it is a direct-replacement job.

It depends what you value. These arms lean toward precision and durability rather than extra plushness, so a driver chasing maximum isolation may prefer to leave the softer factory bushings in place. An owner who wants the big SUV to feel tighter and more responsive will appreciate the change. Be clear on which you are after before buying.

No, and that is worth stating plainly. The lower fore link is about strength and precise location while shedding weight, not adjustment; camber and toe adjustment come from the dedicated camber and toe arms instead. Fit this one to sharpen how the rear locates the wheel. Fit the adjustable arms when you want to change alignment settings.

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.