TEIN SKL78-S3B00 S.Tech Lowering Springs for 06-12 Lexus GS300/GS350

Vehicle Fitment

• 2006 Lexus GS300 (RWD, GRS190L)
• 2006-2007 Lexus GS430 (RWD, UZS190L)
• 2007-2012 Lexus GS350 (RWD, GRS191L)
• 2008-2012 Lexus GS460 (RWD)

Fitment Notes

• RWD only - this spring set does not fit AWD GS models. Sources referenced a separate AWD-specific spring set (SKAGX-S3B00) for the 2014-2016 GS350 AWD, confirming this SKL78-S3B00 is RWD-specific
• Front and rear lowering spring set - complete kit, not a partial (front-only or rear-only) set
• Designed for use with OEM or OEM-replacement shocks/struts - not intended to be paired with performance dampers requiring a different spring rate range
• Superseded from an earlier part number (SKL78-AUB00) - if researching older listings or reviews, both part numbers refer to the same current product
• Includes TEIN silencer rubbers on select applications to reduce noise at the spring-to-perch interface

Features

• Approximately 1.4" front / 1.1" rear drop (roughly 38mm) for a noticeably lower, more aggressive stance
• Chrome vanadium SAE9254V construction retains more of the spring's working stroke while staying lightweight and durable
• Progressive spring rate design balances ride comfort with sharper handling response
• Front spring rate 230 lbs/in / rear spring rate 280 lbs/in for a firmer, more controlled ride than stock
• Green powder coat finish for corrosion resistance
• Each application road-tested for a real-world balance between comfort and performance, not just to a spec sheet
• 1-year limited warranty covering sag beyond 5mm, breakage, deformity, and noise
• Manufactured and assembled at Tein's factory in Japan

Specifications

• Series: S.Tech
• Position: Front and Rear (complete set)
• Front Drop: Approx. 1.4" (36mm)
• Rear Drop: Approx. 1.1" (28mm)
• Front Spring Rate: 230 lbs/in
• Rear Spring Rate: 280 lbs/in
• Construction: Chrome Vanadium SAE9254V
• Compatible Dampers: OEM or OEM-replacement shocks/struts
• Warranty: 1-year limited (sag over 5mm, breakage, deformity, noise)

Included Components

• 2x Front Lowering Springs
• 2x Rear Lowering Springs
• Silencer Rubbers (select applications)

Product Description

Factory GS suspension is tuned for a broad comfort target that leaves both stance and handling response on the table for owners who want a more engaged driving feel without committing to a full coilover system. Tein's S.Tech springs lower the car roughly 1.4" front and 1.1" rear while increasing spring rate over stock, sharpening road-holding and reducing body roll through corners while retaining compatibility with the factory dampers.

Chrome vanadium SAE9254V construction is chosen specifically to retain more of the spring's working stroke over time compared to lower-grade spring steel, and the progressive rate design is engineered to avoid the harsh, uncontrolled ride some aggressive lowering springs introduce. Tein backs this up with real-world road testing rather than relying purely on a spec sheet balance, aiming for a setup that's genuinely livable day to day.

This kit suits RWD GS300/GS350/GS430/GS460 owners who want a noticeably lower, sportier stance with tighter handling, without replacing their factory-style dampers. As with any lowering spring installation, a wheel alignment is recommended afterward to reset camber and toe to the new ride height, and confirm your specific GS trim is RWD before ordering - this spring set is not compatible with AWD variants of the same models.