SPL Parts SPL EL Z34 Eccentric Lock-out Kit for 2009-20 Nissan 370Z

Vehicle Fitment

• 2009-2020 Nissan 370Z (Z34, RWD, 3.7L V6) - all trims
• 2007-2008 Infiniti G35 Sedan (V35, RWD/AWD) - 3.5L V6
• 2008-2013 Infiniti G37 (V36, RWD/AWD) - 3.7L V6

Features

• Billet 6061-T6 aluminum lock-out plates replace stock eccentric bolts to eliminate unwanted slip
• Grade 10.9 CAD-plated hardware included to secure toe and camber adjustments under high load
• Direct-fit kit designed for high-cornering applications, lowered cars, street / track use
• Prevents rear alignment drift (camber & toe) during aggressive driving or suspension travel
• Maintains geometry when paired with adjustable control arms (required for full adjustment)
• Manufactured in USA with CNC machining and high-quality hardware for precision and durability
• Simplifies alignment checks by locking critical adjustment points once preferred settings are dialed in
• Ideal for performance builds, wide tyres, coil-over setups, and chassis crossing high lateral loads

Specifications

• Part Number: SPL EL Z34
• Position: Rear camber & toe eccentric lock-out points (one vehicle kit)
• Material: 6061-T6 aluminum plates + grade 10.9 steel bolts & lock nuts
• Vehicle Platforms: Nissan 370Z (Z34) 2009-2020; Infiniti G35 Sedan (V35) 2007-2008; Infiniti G37 (V36) 2008-2013
• Drivetrain Compatibility: RWD, AWD (for Infiniti G35/G37 depending on trim) - check individual drive-type before installation
• Note: Requires adjustable rear arms or full rear suspension adjustment capability as that eccentric bolt function is locked out

Included Components

• 1x Set of CNC-machined aluminum lock-out plates (rear camber & toe positions)
• 1x Hardware kit (grade 10.9 bolts, lock nuts, washers) suitable for both sides

Product Description

The SPL EL Z34 Eccentric Lock-out Kit is engineered to keep your rear suspension geometry absolutely stable under load, track-use, or lowered conditions when the standard factory eccentric bolts can shift under cornering forces. By replacing those loose adjustment points with precision machined plates and high-grade hardware, this kit ensures your camber and toe settings remain locked in, giving you predictable handling, improved tyre wear, and consistent performance lap after lap.

Installation is straight-forward for a technician familiar with alignment setups: remove the factory eccentric bolts at the rear camber and toe arms, install the supplied lock-out plates and hardware, then dial in your preferred settings using adjustable arms. Because this kit eliminates the eccentric bolt adjustment capability, **adjustable rear arms are required** for tuning before lock-out. Always follow with a full 4-wheel alignment. Fitment is confirmed through 2020 for Nissan 370Z (Z34) and through 2013 for Infiniti G37 / 2008 for G35; fitment for 2021+ and 2024+ models is **unconfirmed** at time of listing.