Tesla Model S (2021+) Stage 2: Street & Track Handling Kit

The 2021+ Tesla Model S Plaid and Long Range deliver incredible straight-line performance from the factory, but the chassis has far more potential. The Stage 2: Street & Track Handling Kit is built to unlock that potential in a balanced, reversible way. It is a complete suspension and rigidity package designed for the owner who daily drives their Model S as a family sedan, yet wants the confidence and precision to enjoy canyon runs, HPDE events, or full track days.

Stage 2 focuses on three core areas: roll control, alignment control, and chassis rigidity, all developed from our Dark Helmet Pikes Peak and lap record program. Every component in this kit is engineered to work together, so you feel a cohesive, predictable car rather than a collection of random parts.

Roll control: Front and Rear Adjustable Sway Bars

Body roll is the enemy of confidence. The Front and Rear Adjustable Sway Bars in this kit dramatically reduce roll and sharpen response while giving you tuning options for your driving style.

Front bar: for drivers who want maximum front-end support and track capability

Rear bar: a must-have even for street-only cars, livens the rear, improves rotation, and adds stability

Both bars feature multiple adjustment holes so you can soften the car for long highway drives or stiffen it for track days. The result is a Model S that feels flatter in corners, more responsive on turn-in, and calmer in quick transitions, without making the ride punishing.

Ride height and aero: Sports Dynamic Air Suspension Lowering Kit

The factory Bilstein air suspension is an excellent foundation. The Sports Dynamic Air Suspension Lowering Kit refines it rather than fighting it.

By re-indexing the height map, each factory setting is effectively moved one step lower. You retain Very High, High, Medium, Low and Track modes, but the car sits lower at each selection. This lowers the center of gravity, reduces aerodynamic drag, and gives the car a sleeker stance while staying within the intended operating window of the system.

Key benefits:

• Lower roll center and less weight transfer in corners
• Improved highway stability and range due to reduced drag
• A more planted, performance-oriented stance without sacrificing practicality
• The brackets are plug-and-play, fully reversible, and typically install in about 30 minutes, so you can return to stock at any time.

Alignment control: FUCA and Billet Rear Camber Arms

Power and sticky tires are only useful if your contact patch is working for you. That is where the Front Upper Control Arm Set – Ultimate Edition (FUCA) and Billet Adjustable Rear Camber Arm Set come in.

Front Upper Control Arms – Ultimate Edition (FUCA)

These arms provide precise adjustment of front camber, caster, and toe, using our patented camber pill technology. You can run a mild street-friendly setting for daily use, then flip to a more aggressive camber pill for track days in minutes.

Massive camber range for both lowered and lifted setups

CNC-milled 6061-T6 aluminum with sealed spherical bearings

Silent operation suitable for Autopilot commuting and long trips

On track, additional negative camber keeps the front tires alive and consistent. On the street, you can dial in a more conservative setting for even tire wear.

Billet Adjustable Rear Camber Arm Set

The multi-link rear suspension of the Model S Plaid is sensitive to ride height changes. When you lower the car, factory arms do not offer the camber range needed to keep tires happy.

Our billet rear camber arms offer a wide range from positive to aggressive negative camber, making it possible to:

• Correct rear camber on lowered cars for better tire wear
• Set performance-oriented camber for track use and high-grip tires
• Maintain predictable, stable rear behavior at high speed

Both FUCA and rear camber arms are built with sealed spherical bushings for precision and durability without adding noise and harshness.

Chassis rigidity: GT Rear Strut Tower Brace

The updated Model S chassis uses the battery pack as a structural element, which is brilliant for mass and center of gravity, but the upper rear structure can flex more than many drivers realize. This flex shows up as rear “float,” delayed reactions to steering inputs, and interior squeaks and rattles.

The GT Rear Strut Tower Brace ties the rear shock towers together and significantly reduces that flex. Benefits include:

• Tighter, more predictable rear-end response
• Improved turn-in confidence and mid-corner stability
• Noticeable reduction in interior noises over uneven surfaces

The cross brace installs using factory mounting points and is fully reversible. The center X section is designed for quick removal, so you can fold the rear seats and maximize cargo space when needed.

A cohesive system for street and track

Individually, each component is a strong upgrade. As a bundle, they transform how the Model S feels.

• The sway bars and lowering kit control roll and weight transfer
• The FUCA and rear camber arms keep the tires in their ideal window
• The GT Rear Strut Tower Brace ensures the chassis responds as one piece

On Monday, you can run softer sway bar settings, conservative camber, and enjoy a quiet, refined family sedan that rides better than a typical “coilover” build. On Saturday, you can stiffen the bars, swap to track camber settings, and pair everything with UP-03 or UP-05 forged wheels to unlock serious pace and a motorsport look.

The Stage 2: Street & Track Handling Kit is your bridge between luxury EV and credible track tool. Bolt it on, align it properly, and your 2021+ Model S Plaid or Long Range becomes the car it always wanted to be: composed with the kids in back, and genuinely thrilling when you decide to drive hard.