The Hardrace Rear Subframe Precision Alignment Insert Set is designed to improve rear subframe location and chassis accuracy by reinforcing the factory subframe bushings with CNC‑machined aluminum collars. Rather than replacing the OEM bushings entirely, this kit limits unwanted subframe movement while retaining factory geometry and mounting structure.

By installing aluminum collars above and below each original subframe bushing, lateral and vertical deflection is significantly reduced. This results in more precise suspension response, improved alignment consistency under load, and a more connected rear‑end feel during aggressive driving.

Key Features

• CNC‑machined aluminum subframe alignment collars
• Improves rear subframe location accuracy
• Reduces unwanted subframe deflection under load
• Maintains factory subframe geometry and anti‑squat characteristics
• Improves suspension response and chassis feedback
• Direct bolt‑on installation using factory bushings
• Lightweight and durable aluminum construction

Why Use Subframe Alignment Inserts?

• Improves rear suspension precision without fully solid mounting
• Maintains some OEM isolation for better drivability
• Enhances consistency during hard acceleration, braking, and cornering
• Suitable for both 2WD and 4WD platforms
• Ideal middle ground between stock bushings and full solid replacements

Kit Contents

• Aluminum subframe alignment collars
• Complete 8‑piece set (upper and lower collars)

Application

• Nissan 180SX R(P)S13
• Nissan Silvia (P)S13
• Nissan 200SX/Silvia S14
• Nissan 200SX/Silvia S15
• Nissan 300ZX Z32 
• Nissan Skyline R32 including GT-R
• Nissan Skyline R33 including GT-R
• Nissan Skyline R34 including GT-R
• Drivetrain: 2WD & 4WD

The Hardrace 6275 Rear Subframe Precision Alignment Insert Set is ideal for performance street, track, and drift builds seeking improved rear‑end control, sharper chassis response, and more consistent suspension behavior—without the harshness of fully solid subframe bushings.

Package Contents:

• 4 × Hardrace subframe collar, upper
• 4 × Hardrace subframe collar, lower