MPP Adjustable Rear Traction and Trailing Arms for 2021+ Tesla Model S
This four-arm Mountain Pass Performance package replaces the lower traction and trailing links on the 2021+ Tesla Model S rear suspension. It provides precise, repeatable alignment adjustment for lowered, street-performance, and track applications.
Package and construction
- Four arms replacing the rear lower traction and trailing links
- CNC-machined from billet 6061-T6 aluminum
- Stainless-steel adjusters and hardware
- Manufactured and assembled in North America
- Blue anodized finish
- Fully assembled and preset to the factory length
- Anti-seize applied to the aluminum-and-stainless adjustment interface
Alignment features
- Turnbuckle adjustment for precise camber and suspension-geometry changes
- Thread-clamp locking system designed to hold the alignment setting while tightening
- Laser engraving identifies the adjustment direction
- Sealed spherical bearings replace compliant rubber bushings
- Instructions include the setup data needed for correct alignment
Alignment requirement: The installing alignment shop must review the supplied MPP instructions before making adjustments. Incorrect lower-arm settings can adversely affect rear toe and bump-steer behavior.
Development and results
MPP developed the arms after modeling the refreshed Model S rear suspension and identifying excessive toe-out in compression at significantly lowered ride heights. MPP reports using the arms to fine-tune rear bump steer on its MPP.R Model S Plaid. With its broader competition suspension setup and 315-width Michelin Pilot Sport 4S tires, MPP reported up to 1.4 g of cornering at some circuits.
Fitment and warranty
- Fits 2021+ Tesla Model S, including Plaid
- Warranty: Three years