SPL Parts RML Z34 Titanium Rear Mid Links for Nissan 370Z Z34 Infiniti G35 G37

Vehicle Fitment

• 2009-2020 Nissan 370Z (Z34) - all variants
• 2023+ Nissan Z (RZ34) - all variants
• 2007-2008 Infiniti G35 Sedan (V35)
• 2008+ Infiniti G37 Coupe / Sedan (V36)

Fitment Notes

• Replaces the OE rear spring bucket/mid link arms. Springs are NOT included - most users will use 6" long springs with a 2.5" inner diameter (60mm). Consult SPL's Rear Mid Link Spring Calculator for guidance on spring selection for your specific ride height and rate goals.
• Recommended companion products: SPL Rear Camber Links (#SPL RLL Z33B) and SPL Eccentric Lockout Kit (#SPL EL Z34). The eccentric lockout kit eliminates the OE eccentric bolt which can slip under load, causing alignment changes and aggressive tire wear - it is strongly recommended when using rear mid links.
• Sold as a pair - one pair covers the rear axle. Springs, eccentric lockout kit, and camber links are sold separately.
• Not confirmed for the Infiniti G37 Convertible - verify fitment with SPL Parts before ordering for this body style.

Features

• SPL Parts TITANIUM Series rear mid links for the Nissan 370Z (Z34), Nissan Z (RZ34), and Infiniti G35/G37 - replace the OE spring bucket arms to provide simultaneous, independent control over rear toe, rear spring rate, and ride height in a single billet aluminum component
• Threaded spring perch accepts standard 2.5" ID springs - allows a wide selection of spring rates and lengths to be used; toe adjustment range of +/- 6° from stock; ride height adjustment range of 3" for any given spring (base height set by spring length selection)
• Adjustable top hats reduce spring misalignment at varied ride heights, ensuring the spring is correctly seated and loading the arm evenly across its full adjustment range
• 4130 Chromoly Double Adjuster CNC gun drilled for weight reduction and electroless nickel plated for corrosion resistance - SPL's exclusive rotating clamp design eliminates jam nuts for faster, more precise, and more repeatable alignment adjustments
• Custom 3/4" 3-piece FK Bearings rod ends (PTFE-lined, made in Connecticut) provide low-friction, smooth articulation with high load capacity and excellent dynamic wear characteristics from -65°F to 325°F - eliminating bushing deflection under load
• 6061-T6 billet aluminum main arm with blue anodized Ti-6Al-4V titanium hardware - lightweight, high-strength construction that reduces unsprung weight compared to OE steel spring bucket arms
• Designed, CNC machined, and assembled in the USA by SPL Parts

Specifications

• Part Number: RML Z34
• Brand: SPL Parts
• Product Type: TITANIUM Series Rear Mid Links (Spring Bucket Replacement)
• Main Arm Material: 6061-T6 Billet Aluminum
• Adjuster Material: 4130 Chromoly, CNC gun drilled, electroless nickel plated
• Hardware: Ti-6Al-4V Titanium, blue anodized
• Rod Ends: Custom 3/4" 3-piece FK Bearings, PTFE-lined (made in Connecticut)
• Spring ID: 2.5" (60mm) standard springs - most users use 6" long springs (not included)
• Toe Adjustment: +/- 6° from stock arm position
• Ride Height Adjustment: 3" per given spring length (base height set by spring length)
• Adjuster Design: Rotating Clamp - no jam nuts
• Sold As: Pair (2 pieces)
• Springs: NOT included
• Origin: Made in USA

Included Components

• 2x TITANIUM Series rear mid link assemblies (6061-T6 aluminum arm, 4130 Chromoly adjuster, 3/4" FK PTFE-lined rod ends, titanium hardware, adjustable top hats)
• Springs NOT included - see SPL's Spring Calculator for guidance
• Eccentric lockout kit and rear camber links sold separately (recommended)

Product Description

The SPL Parts RML Z34 are TITANIUM Series rear mid links for the 2009-2020 Nissan 370Z (Z34), 2023+ Nissan Z (RZ34), and Infiniti G35 Sedan/G37. These arms replace the OE rear spring bucket links - a unique feature of the Z34/G37 rear suspension layout that SPL turns into a comprehensive alignment and suspension tuning advantage. Rather than simply replacing the OE spring bucket with another rigid component, the RML Z34 adds a threaded spring perch that accepts 2.5" ID standard springs, a toe adjustment range of +/- 6° from stock position, and a ride height adjustment range of 3" for any given spring - giving the builder fine control over all three parameters simultaneously and independently.

The rotating clamp Double Adjuster (4130 Chromoly, gun drilled, electroless nickel plated) eliminates jam nuts for fast and repeatable alignment changes, while custom 3/4" 3-piece FK PTFE-lined rod ends provide low-friction articulation and high load capacity at operating temperatures from -65°F to 325°F. Adjustable top hats ensure proper spring seating across the full height adjustment range. Springs are not included - most users choose 6" long springs; consult SPL's Rear Mid Link Spring Calculator for guidance. Pairing with SPL's Eccentric Lockout Kit (#EL Z34) is strongly recommended to prevent the OE eccentric bolt from slipping under load. Complete rear alignment control is achieved when combined with SPL Rear Camber Links (#RLL Z33B). Sold as a pair, made in the USA by SPL Parts.