SPL Parts SPL EL Z33 Rear Eccentric Lockout Kit for 03-08 Nissan 350Z Z33 &03-07

Vehicle Fitment

• 2003-2009 Nissan 350Z (Z33; Base, Enthusiast, 35th Anniversary, Grand Touring, Performance, Touring, Nismo)
• 2003-2006 Infiniti G35 Sedan (V35; Base, X, Sport)
• 2003-2007 Infiniti G35 Coupe (V35; Base, X, Sport)

Fitment Notes

• Rear eccentric lockout kit designed for adjustable rear camber/toe suspension arms
• Requires adjustable rear control arms for camber and toe adjustment - does not provide alignment adjustment by itself
• Wheel alignment recommended after installation to ensure proper rear geometry

Features

• Eliminates OEM eccentric bolt slip to maintain rear alignment settings under high cornering loads
• CNC-machined lockout plates from high-strength T6061 aluminum
• Supplied with CAD-plated grade 10.9 hardware for zero-slip performance
• Reduces unintended rear toe/camber changes during spirited driving or track use
• Made in the USA with durable materials for long service life
• Improves suspension adjustment precision when paired with adjustable arms
• Compact design fits neatly in existing factory alignment points
• Enhances overall rear suspension predictability and handling confidence

Specifications

• Brand: SPL Parts
• Part Number: SPL EL Z33
• Application: Rear eccentric lockout plates for camber and toe arms
• Material: CNC-machined T6061 aluminum lockout plates, grade 10.9 hardware
• Position: Rear suspension eccentric locations (camber and toe)
• Fitment: Nissan 350Z Z33 (2003-2008), Infiniti G35 V35 Sedan (2003-2009), Infiniti G35 V35 Coupe (2003-2007)
• Drivetrain: RWD

Included Components

• 4x CNC-machined eccentric lockout plates
• 4x CAD-plated grade 10.9 bolts
• Washers and hardware for installation

Product Description

The SPL Parts SPL EL Z33 Rear Eccentric Lockout Kit is a precision-engineered suspension accessory designed to eliminate the tendency of stock eccentric bolts to slip under high cornering loads - a common issue experienced on Z33-platform Nissan and Infiniti vehicles during aggressive driving or performance alignment setups. By replacing the factory eccentrics with robust CNC-machined aluminum lockout plates and high-strength hardware, this kit maintains the exact rear camber and toe settings once dialed in, helping you preserve critical alignment settings during spirited driving or track sessions.

This kit is intended for vehicles equipped with adjustable rear suspension arms (such as camber and toe links); it does not, by itself, provide adjustment range but rather secures your adjustments by preventing eccentric bolt rotation. Construction from T6061 aluminum and grade 10.9 hardware ensures strength and durability while minimizing risk of slippage. Whether building a track-focused 350Z or enhancing street performance, the SPL EL Z33 lockout kit helps maintain consistent rear alignment and contributes to improved handling predictability. A professional alignment is recommended after installation to ensure optimum suspension geometry.