Hardrace Rear Trailing Arms – Subaru (6153-TA)

Hardrace Rear Trailing Arms – Subaru Impreza, Forester, Legacy (6153-TA)

Product Overview

On early independent multi-link Subaru layouts, the factory trailing arms are lightweight, flexible stamped steel components paired with soft rubber compliance bushings. Under heavy braking, rapid acceleration, or aggressive cornering transitions, these stock arms flex longitudinally. This deflection alters your functional wheelbase mid-corner, creating an unpredictable rear-end sensation and muddying your driver feedback. Available at JDMaster.net, these heavy-duty replacement arms are fabricated from high-density reinforced steel alloy and come pre-assembled with motorsport-grade spherical pillow ball bushings to provide absolute tracking stability.

Key Features & Benefits

• 2-Piece Trailing Arm Kit: Replaces both factory longitudinal rear trailing arms (left and right sides) to completely stabilize front-to-back hub orientation.

• Zero-DeflectionPillow Balls: Pre-installed with professional, anti-dust spherical metal joints. By completely removing the elastic “give” of original factory rubber, your wheelbase and caster tracking remain perfectly rigid under load.

• Eliminates Rear Wheel Hop: Maximizes traction during aggressive launches and power delivery by keeping the tire footprint firmly anchored against the road surface without structural flexing.

• Ultra-Strong High-Density Steel Structure: Manufactured from heavy-duty steel alloy that resists structural twisting, bending, and mechanical deformation under intense track, drift, or rally settings.

• Precise Braking and Cornering Tracking: Eliminates fore-and-aft wheel migration during heavy deceleration zones, keeping your rear axle tracking perfectly true to your inputs.

• Signature ED Anti-Rust Treatment: Insulated with Hardrace’s proprietary Electrophoretic Deposition (ED) base coating and industrial paint layer to defend against damp track moisture, mud, and road grit.

• Seamless Direct Bolt-On Design: Engineered using precise physical 3D modeling to ensure a perfect drop-in fit with your factory subframe pickup anchors and rear hub knuckles.

Technical Specifications

Applications

• Subaru Impreza WRX & STI (1st Gen) — 1992–2000 (GC / GF / GM Chassis)

• Subaru Impreza WRX & STI (2nd Gen) — 2001–2006 (GD / GG Chassis)

• Subaru Forester (1st Gen) — 1997–2002 (SF Chassis)

• Subaru Forester (2nd Gen) — 2003–2008 (SG Chassis)

• Subaru Legacy / Outback (2nd Gen) — 1995–1998 (BD / BG / BK Chassis)

Mechanics Corner: Longitudinal Control via Spherical Pillow Balls

When analyzing independent rear suspension, it is common to overlook fore-and-aft movement. However, as your vehicle brakes heavily or transitions over mid-corner curbing, longitudinal forces try to shove the rear wheel forward or backward inside the wheel well. When factory bushings flex, this movement forces the rear suspension into unintended dynamic changes.

The Hardrace 6153-TA kit addresses this structural weak point directly. By substituting flexible factory connections for solid metal spherical pillow balls, the rear hub assembly is forced to travel strictly through its designed vertical stroke. Because the arm pivots smoothly without side-to-side or front-to-back deformation under load, you experience immediate throttle communication, zero wheel chatter, and a rock-solid feel through high-speed sweeping corners.

Professional Fitting & Alignment Notes

The Hardrace 6153-TA trailing arms utilize solid metal spherical pillow ball bearings instead of isolated rubber. While this yields maximum structural performance, it will transmit a minor increase in mechanical road texture, suspension harshness, and tire vibration into the vehicle cabin. This is normal and is the industry-standard trade-off for zero-deflection mechanical precision.

Because installing new trailing arms alters your dynamic wheel tracking lines and wheel alignment positions simultaneously, a professional four-wheel laser alignment is strictly mandatory immediately following installation. You can schedule a precision chassis tuning session at our fully equipped JDMaster.net workshop, where our alignment specialists tailor geometry for street, time attack, or stage-rally environments.

Warranty

The warranty on Hardrace products depends on the type of product, with a minimum warranty period of 2 years. This warranty does not cover damage caused by a car crash, improper use, negligence or normal wear and tear.