GKTech Infiniti Nissan Z33 350z/G35 Rear subframe slip-in collars - Solid

The GKTech Solid Rear Subframe Slip-In Collars for the Nissan 350Z (Z33) and Infiniti G35 are a simple, effective solution to eliminate rear subframe movement without the need to remove or press out your OEM bushings. These CNC-machined billet aluminum collars slip over the factory bushings to create a solid, metal-on-metal interface, significantly reducing flex and improving traction, handling precision, and suspension feedback.

Ideal for drift, track, or aggressive street builds, these collars deliver solid mount performance without the hassle of a full subframe bushing replacement.

Key Features:

• Solid Mount Feel Without Full Replacement – Locks the subframe in place by filling the voids around OEM bushings.

• Improves Rear-End Stability – Reduces flex under acceleration, braking, and cornering loads.

• CNC-Machined 6061-T6 Aluminum – Lightweight, corrosion-resistant, and built to last.

• Easy, Non-Invasive Install – No need to remove the subframe; installs with basic hand tools.

• Ideal for Performance Use – Perfect for drifting, time attack, or spirited street driving.

Specifications:

• Material: 6061-T6 Billet Aluminum

• Mounting Style: Slip-in collar design (top and bottom halves)

• Fitment: Designed for factory subframe bushings

Compatibility:

• Nissan 350Z (Z33) – 2003–2008

• Infiniti G35 (Coupe & Sedan) – 2003–2007

What’s Included:

• (8) Solid aluminum slip-in collars (4 upper, 4 lower)

• (1) Set of installation instructions

Notes:

• Will increase NVH (Noise, Vibration, and Harshness) compared to rubber bushings.

• Professional installation recommended, but can be installed at home with jack stands and basic tools.

• Can be paired with solid diff bushings for even greater drivetrain rigidity and response.

Upgrade your Z33 or G35 with GKTech Solid Subframe Slip-In Collars for a more planted, responsive rear end—without the complexity of a full bushing replacement.