Hardrace Rear Lower Arm Pillow Ball Bushings – Honda (6594F)

Hardrace Rear Lower Arm Pillow Ball Bushings – Honda (6594F)

Product Overview

While hardened rubber upgrades significantly reduce suspension flex, competitive motorsport or high-end time-attack configurations require zero dynamic alignment drift. The Hardrace Rear Lower Arm Pillow Ball Bushings – Honda (6594F) kit is a true race-grade overhaul engineered to replace compliant factory rubber with rigid, solid-state spherical joints.

This 2-piece rear lower control arm bushing set features Hardrace’s advanced spherical pillow ball (uniball) design. By removing the elastic play inherent in traditional bushings, this kit locks the rear lower control arms into a fixed structural arc. The result is instant cornering stabilization, razor-sharp driver steering input, and a rock-solid rear tracking line under heavy side loads.

Key Features

• Zero Suspension Deflection: Completely eliminates rubber deflection to keep your rear toe and camber values exactly where you set them, even under maximum lateral G-forces.

• Motorsport-Grade Spherical Bearings: Equipped with high-quality, ultra-low friction spherical joint bearings that ensure smooth, binding-free suspension travel.

• Integrated TPV Anti-Dust Boots: Protected by heavy-duty Thermoplastic Vulcanizate (TPV) dust boots that seal out track grime, road salt, water, and oil to ensure long-term bearing reliability.

• Maximum Driver Feedback: Replaces the isolating cushion of rubber with solid mechanical links, communicating rear-tire slip angles instantly to the driver.

• Advanced Low-Friction Liners: The inner bearing assembly combines a special high-strength metal alloy with a high-molecular polymer tube to deliver silent, smooth, and predictable pivot rotation.

• Direct OEM Press-Fit Swap: Precision-machined to original factory dimensions for a direct press-fit replacement inside your original rear lower control arms.

Technical Specifications

Applications

This specific Part Number 6594F pillow ball bushing set is engineered to press flawlessly into the rear lower control arms of the following 2000–2006 Honda and Acura platforms:

• Honda Civic 7th Gen (2001–2005 EP1 / EP2 / EP3 / EP4 / EM2 / ES1 / EU Chassis – Including Type R & Si)

• Honda Integra 4th Gen (2001–2006 DC5 Chassis – Including Base, Type S & Type R)

• Acura RSX (2002–2006 DC5 All Models – Base and Type-S)

• Honda Stream 1st Gen (2000–2006 RN1 / RN2 / RN3 / RN4 / RN5 Chassis)

The Mechanical Advantage: True Spherical Rigidity for the Track

On the EP3 Civic and DC5 Integra multi-link rear suspension layout, the rear lower control arms act as critical tracking arms. When throwing your car into an apex or stabbing the brakes at triple-digit speeds, the immense lateral load tries to crush the inner control arm bushings. If there is even a millimeter of rubber or polyurethane deflection, the rear wheels will dynamically shift into a toe-out alignment—triggering sudden, unprovoked snap oversteer.

The Hardrace 6594F Pillow Ball bushings provide a zero-flex solution. Because they pivot on a solid steel bearing rather than twisting through elastic rubber, they allow your rear suspension to compress and rebound freely without altering your alignment angles. Unlike raw, unbooted race bearings that wear out within a few months on the road, Hardrace wraps their uniballs in proprietary TPV dust covers. This keeps dirt and moisture out, allowing you to enjoy pure motorsport handling and consistent lap times season after season.

Professional In-House Hydraulic Pressing & Alignment at JDMaster

Get it Fitted by the Experts: We provide comprehensive professional workshop installation and precision bushing pressing services right inside our specialized workshop.

Contact us today to secure your workshop appointment!

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.