The GKTech Rear Subframe Slip‑In Collars are designed to tighten up the rear of the vehicle by reducing subframe movement under load. By compacting the factory rubber subframe bushings, these collars help eliminate axle tramp and deliver more precise rear‑end control during harsh driving conditions.

These collars install above and below the original subframe bushings, limiting unwanted movement without fully replacing the factory mounts. This results in a noticeable improvement in drivetrain response, traction, and chassis consistency while retaining some OEM compliance.

Key Features

• Reduces rear subframe movement and axle tramp
• Improves rear‑end control and drivetrain response
• CNC‑machined aluminum construction
• Compacts factory rubber subframe bushings
• Direct slip‑in design for easy installation
• Cost‑effective alternative to solid subframe bushings

Why Use GKTech Slip‑In Collars?

• Tightens up the rear of the vehicle without full bushing replacement
• Improves traction and stability during aggressive driving
• Maintains some factory compliance for street‑driven cars
• Ideal for drift, grip, and performance street applications

Kit Contents

• Rear subframe slip‑in collars
• Complete 8‑piece set

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 GKTech REAR‑CLLR Subframe Slip‑In Collars are a simple and effective upgrade for drivers looking to improve rear‑end control, reduce axle tramp, and gain more confidence under hard acceleration and cornering—without committing to fully solid subframe mounts.

Package Contents:

• 4 × GKTech subframe slip‑In collar, upper
• 4 × GKTech subframe slip‑In collar, lower