Hardrace Complete Harden Bushing Kit – Nissan Skyline / Z / Infiniti G series (7572)

Hardrace Complete Harden Bushing Kit – Nissan Skyline / Z / Infiniti G series (7572)

Product Overview

The Nissan front-midship (FM) platform utilizes a multi-link suspension configuration designed to optimize tire contact patches under changing loads. However, as these vehicles age, the 29 factory rubber bushings soften, crack, and tear. This rubber breakdown allows the control arms to shift excessively during hard cornering and heavy braking, causing sudden alignment changes, vague steering feel, and rear-end instability.

The Hardrace Complete Harden Bushing Kit (7572) is a comprehensive 29-piece master refresh package. Available at JDMaster.net, this kit replaces all primary suspension arm bushings with Hardrace’s proprietary high-density hardened rubber compound. By upgrading the entire chassis at once, you eliminate suspension deflection under lateral forces while maintaining the cabin refinement needed for street driving.

Key Features & Benefits

• 29-Piece Master Set: Provides a complete overhaul for front and rear control arms, trailing arms, camber links, and toe arms.

• High-Durometer Hardened Rubber: Engineered with high-strength, anti-crack rubber that reduces material compression under load far better than standard factory replacements.

• Locks Alignment Settings: Stops dynamic caster, camber, and toe changes during high-speed cornering and hard deceleration.

• Maintains Street Refinement: Absorbs harsh road harmonics and high-frequency vibrations far better than noisy metal spherical joints or squeaky polyurethane bushings.

• No Servicing Required: Unlike polyurethane options, these hardened rubber bushings require no regular greasing or maintenance and operate completely silently.

• Direct Fit Engineering: Modeled strictly on original manufacturing metrics to press cleanly into your factory suspension arms.

Technical Specifications

Applications

This 29-piece master suspension kit is engineered to match the multi-link arm dimensions and knuckle configurations of the following rear-wheel-drive platforms:

• Nissan 350Z (2002–2008 Z33 Chassis — All models)

• Nissan Skyline (2001–2006 V35 Chassis — RWD Coupe and Sedan models)

• Infiniti G35 (2003–2007 V35 Chassis — RWD Coupe and Sedan models)

The Mechanical Advantage: Restoring Multi-Link Precision

In a multi-link setup like the Z33 and V35 chassis, each control arm depends on stable pivot points to guide the wheel hub through its suspension travel cycle. When you throw the vehicle into a fast bend, massive lateral forces push against these arms. Stock rubber bushings feature soft, hollow voids to minimize road noise, but under load, this rubber compresses completely flat. When it deforms, the arm shifts backward or inward, leading to immediate alignment drift and a loose handling feel at the limit.

The Hardrace 7572 kit addresses this bottleneck by replacing all 29 pivot locations with solid, high-density rubber inserts. This compound resists twisting and compression under extreme tire loads, ensuring the arms rotate strictly along their intended mechanical axes. As a result, your alignment values stay locked, your steering rack delivers direct feedback, and your rear tires maintain a flat footprint on the pavement for consistent exit traction.

Professional Installation Notes

All arm mounting bolts must be tightened to factory torque specifications only when the vehicle is resting at ride height under its own weight on a drive-on hoist. Fastening pivot bolts while the suspension hangs in the air locks pre-load tension into the rubber, leading to premature bushing tear and uneven ride levels. A full four-wheel laser alignment is strictly required after reassembly.

Rebuilds can be booked through our technical team at the JDMaster.net workshop.

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.