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

The GKTech Rear Subframe Slip-In Collars for the Nissan 350Z and Infiniti G35 are designed to dramatically reduce subframe movement without the increased NVH that comes with full solid bushings. These semi-solid aluminum collars slide over the factory subframe bushings, helping to lock the subframe in place and improve drivetrain control under acceleration, braking, and cornering.

Perfect for street-driven cars, track day builds, or drift setups, these collars are CNC-machined from 6061-T6 aluminum and install without removing the subframe—making this a smart, reversible upgrade for any performance-oriented Z33 or G35.

Key Features:

• Reduces Subframe Flex: Improves traction, alignment retention, and throttle response

• Semi-Solid Design: Minimizes movement while preserving street drivability

• CNC-Machined 6061-T6 Aluminum: Lightweight, strong, and corrosion-resistant

• Bolt-On Install: Slip-in design requires no subframe removal

Specifications:

• Material: 6061-T6 billet aluminum

• Finish: Anodized (finish may vary)

• Install Time: ~1–2 hours with hand tools

Compatibility:

• Nissan 350Z (Z33) – 2003–2008

• Infiniti G35 (V35) Coupe & Sedan – 2003–2007
  Fits OEM subframe bushings

What’s Included:

• (8) Slip-in collar pieces (top and bottom for all 4 subframe bushings)

• (1) Installation reference sheet

Notes:

• Can be installed with subframe in the car

• Excellent for cars with adjustable rear arms or diff braces

• A great alternative to full solid subframe bushings for dual-purpose builds

Lock your rear end down without sacrificing comfort with GKTech’s Semi-Solid Subframe Collars—built for balance, grip, and consistent performance where it counts.