Adjustable Rear Thrust Arm Kit (Rear Longitudinal Arms)

Adjustable Rear Thrust Arm Kit

Precise Wheel Location. Improved Stability. Built for the Street and the Track.

The Levinson Performance Adjustable Rear Thrust Arm Kit provides precise control of rear wheel position while allowing accurate caster and wheelbase adjustment for performance alignment and chassis tuning. Designed for lowered street cars, dedicated track vehicles, and race applications, these heavy-duty adjustable arms deliver the strength, precision, and durability demanded by serious Porsche enthusiasts.

The rear thrust arm, also referred to as the rear trailing arm, controls the fore-and-aft position of the rear wheel while helping maintain suspension geometry during acceleration, braking, and cornering. Worn factory bushings allow unwanted suspension movement that can reduce stability, alter alignment under load, and contribute to inconsistent handling.

Levinson Performance Adjustable Rear Thrust Arms replace the compliant factory rubber bushings with fully weather-sealed spherical bearings, eliminating unwanted deflection while maintaining smooth, bind-free suspension articulation.

A center-adjust turnbuckle design allows precise length adjustment directly on the vehicle without disconnecting either end of the arm. Left- and right-hand threaded adjusters provide fast, accurate, and repeatable alignment changes while maintaining maximum thread engagement throughout the adjustment range.

By adjusting rear wheel position, the Levinson Performance Thrust Arm Kit allows suspension geometry to be optimized after lowering, compensates for chassis tolerances, and provides additional flexibility when corner balancing or dialing in a competition alignment.

Unlike many aftermarket suspension arms that utilize aluminum construction, Levinson Performance Thrust Arms are manufactured from high-strength tubular steel. Steel offers superior fatigue resistance, impact durability, and long-term reliability under repeated suspension loading, making it the ideal material for vehicles driven aggressively on both the street and the track.

Every Levinson Performance Thrust Arm incorporates fully weather-sealed spherical bearings and ball joints to protect against water, dirt, road salt, and debris, providing the precision of a motorsport spherical bearing with dramatically improved service life for real-world driving conditions.

Whether you’re installing coilovers, refreshing worn suspension components, or building a dedicated track car, Levinson Performance Adjustable Rear Thrust Arms deliver the strength, adjustability, and confidence expected from premium suspension components.

Features

• Heavy-duty tubular steel construction for exceptional strength, fatigue resistance, and impact durability
• Adjustable arm length for precise rear wheel positioning
• Center-adjust turnbuckle design allows on-car adjustment without disconnecting the arm
• Precision left- and right-hand threaded adjusters for fast, repeatable alignment changes
• Maintains maximum thread engagement throughout the adjustment range
• Fully weather-sealed spherical bearings and ball joints for exceptional durability and corrosion resistance
• Eliminates compliance found in factory rubber bushings for more consistent suspension geometry
• Smooth, bind-free articulation throughout suspension travel
• Direct bolt-on installation with no permanent vehicle modifications
• Corrosion-resistant finish for long-term reliability
• Ideal for street, autocross, HPDE, time attack, and racing applications
• Sold as a complete pair (one axle)

Benefits

• Maintains precise rear wheel location under acceleration and braking
• Improves rear-end stability and driver confidence
• Eliminates suspension deflection caused by worn rubber bushings
• Allows fine adjustment of rear wheelbase and suspension geometry
• Improves handling consistency during aggressive driving
• Provides repeatable alignment settings for performance applications
• Ideal companion to Levinson Performance Adjustable Toe Links and Rear Upper Camber Arms

Vehicle Fitment

• Porsche Boxster (986) 1997-2004
• Porsche Boxster (987) 2005-2012
• Porsche Cayman (987) 2006-2012

Cross-Reference OE Part Numbers

• 986.331.043.07
• 986.331.043.10
• 987.331.043.00
• 987.331.043.02
• 987.331.043.04

Why Choose Levinson Performance?

Many adjustable suspension arms prioritize minimum weight through aluminum construction and exposed spherical bearings. While suitable for dedicated race vehicles, those designs are more susceptible to fatigue, impact damage, and accelerated wear when exposed to everyday weather and road contaminants.

Levinson Performance takes a different approach. Our high-strength tubular steel construction provides exceptional durability under demanding suspension loads, while fully weather-sealed spherical bearings and ball joints maintain precise suspension control without sacrificing long-term reliability. Combined with an easy-to-use center-adjust design, Levinson Performance Adjustable Rear Thrust Arms deliver the strength, precision, and reliability enthusiasts expect from premium suspension components.