Hardrace Rear Adjustable Arms – Subaru (6153)

Hardrace Rear Adjustable Arms – Subaru Impreza GC/GD, Forester SF/SG, Legacy BD/BG (6153)

Product Overview

The early generations of the Subaru Impreza, Forester, and Legacy utilize a multi-link rear suspension arrangement anchored by dual lateral links and a trailing arm per side. When these vehicles are lowered or subjected to intense track work, the non-adjustable factory stamped-steel arms severely restrict alignment options, causing unpredictable tracking, poor tire contact patches, and binding rubber bushings that numb your driver feedback.

The Hardrace Rear Adjustable Arm Kit (6153) is the ultimate comprehensive rear suspension overhaul engineered for serious enthusiasts. Available at JDMaster.net, this heavy-duty 10-piece master kit replaces all your factory rear lateral links and essential connections with high-density steel adjustable assemblies. Pre-assembled with motorsport-grade spherical pillow ball bushings, this kit completely eradicates suspension compliance under heavy cornering loads—allowing you to dial in precise camber, toe, and track width configurations to maximize your symmetrical AWD grip.

Key Features & Benefits

• 10-Piece Structural Overhaul: A complete master package that swaps out all vulnerable rear lateral links and control assemblies to deliver absolute tracking stability across the rear axle.

• Pillow Ball Bearings: Pre-installed with zero-tolerance, anti-dust spherical metal joints. By completely eliminating the squish and lag of factory rubber, your rear geometry stays locked under extreme high-G loads.

• Camber & Toe Adjustability: Features heavy-duty threaded turnbuckle sleeves that enable mechanics to adjust rear tracking variables easily, preventing uneven tire wear on aggressively lowered setups.

• Reinforced High-Density Steel Alloy: Manufactured from ultra-strong tubular and stamped steel structures designed to withstand heavy curbing, launches, and violent drift or rally transitions without flexing.

• Sharper Driver Feedback: Replacing flexible factory components creates an instantaneous communication stream between the rear subframe and the knuckles, providing razor-sharp response at the steering wheel.

• Signature ED Anti-Rust Treatment: Coated with Hardrace’s advanced Electrophoretic Deposition (ED) finish to resist corrosive road salt, damp track conditions, and stone chips.

• Seamless Direct Bolt-On Design: Engineered using precise 3D simulation to match original equipment mounting points, ensuring clean integration with OEM or performance aftermarket coilovers.

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 — Note: Fits non-STI wide track models as well)

• 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)

The Mechanical Advantage: Correcting Early Subaru Track Geometry

When you drop an early GC8 or GDB Impreza on track-oriented coilovers, the factory lateral arms push upward into a tighter resting angle, drawing the rear track width inward and forcing excessive static negative camber. Because the factory suspension lacks sufficient eccentric bolt adjustability, you are left with reduced straight-line braking traction, twitchy high-speed stability, and accelerated inner tread wear.

The Hardrace 6153 kit solves these geometric limitations completely. By extending or shortening the high-strength turnbuckles on the lateral links, your alignment technician can push the bottom of the knuckle back to its ideal placement—restoring a perfectly flat tire footprint for acceleration while widening the track for improved lateral stability. Furthermore, because factory rubber bushings act like soft springs that twist under load, upgrading to spherical pillow balls ensures your alignment settings remain 100% constant, whether you are initiating a high-speed drift or powering through a technical apex.

Professional Installation & Alignment Notes

Technical Fitting Note: The Hardrace 6153 master kit is an aggressive track-focused suspension upgrade featuring solid spherical pillow ball bearings. Because these bearings contain no rubber insulation, a noticeable increase in mechanical road noise, vibration, and harshness (NVH) will be transferred into the cabin. This is normal and is the direct trade-off for eliminating rear-end deflection.

Because this 10-piece kit changes your vehicle’s rear camber, toe, tracking lines, and dynamic roll centers simultaneously, a comprehensive four-wheel laser alignment is strictly mandatory immediately after assembly. You can book a precision chassis setup at our fully equipped JDMaster.net workshop, where our technicians specialize in custom alignments tailored for street, circuit racing, and rally configurations.

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.