SuperPro SPF3692-90K Double-Offset Front Lower-Inner Bush Kit for 2006-15 Lexus

Vehicle Fitment

• 2006-2015 Lexus IS250/IS350 (RWD)
• 2008-2015 Lexus IS F (RWD)
• 2006-2015 Lexus GS300/GS350/GS430/GS460 (RWD)
• 2014-2015 Lexus RC200t/RC350 (RWD)

Features

• Performance polyurethane bushings designed to replace factory rubber mounts and improve suspension geometry.
• Double-offset design - adds positive caster to both sides for improved directional stability and steering return.
• Engineered for the front axle - lower-inner (rearward) control arm mount where geometry deflection commonly occurs.
• Includes steel insertion tubes and sleeves for correct fitment, improved load distribution and durability.
• Resists oil, water, coolant and extreme temperature environments - ideal for performance or upgraded vehicles.
• Enhances handling precision, sharper turn-in and better alignment retention under load.
• Lifetime manufacturer warranty on materials and workmanship.
• Installation time approximately ~3 hours; front wheel alignment required post-installation.

Specifications

• Bushing material: SuperPro proprietary polyurethane compound.
• Kit contents: 2x polyurethane bushings + 2x steel insertion tubes + 2x sleeves (one side) - full vehicle typically requires both sides.
• Fitting position: Front axle - lower-inner control arm rear mount (double-offset geometry correction).
• Installation difficulty: High - press required, alignment mandatory.

Included Components

• 2x polyurethane bushings
• 2x steel insertion tubes
• 2x mounting sleeves

Product Description

The SuperPro SPF3692-90K kit is a specialised suspension upgrade intended for select Lexus IS, GS and RC models with rear-wheel drive. The lower-inner control arm rear mount is a key geometry point that affects caster and front axle alignment stability. Over time, factory rubber bushings can compress or shift, leading to vague steering, reduced directional control and uneven tyre wear. This kit replaces those worn or flexible bushes with performance-grade polyurethane, along with steel insertion tubes to restore precise mount location, reduce deflection and improve handling under load.

Thanks to the double-offset design, the SPF3692-90K not only replaces worn components but also corrects front axle caster bias by shifting the mount location slightly forward. The result is crisper steering feel, improved return-to-centre behaviour and greater stability during spirited driving or when upgraded wheels/tyres are fitted. Installation involves removing the front lower control arms, pressing out the old bushes, and installing the new polyurethane units with the provided hardware. Because the mount impacts front wheel geometry, a full front wheel alignment must be performed after fit-up. Fitment is confirmed for model years 2006 through 2015 on Lexus IS, GS and RC models as listed; compatibility for other engines, drivetrains, trims or later years should be verified for your specific vehicle before purchase.