STILLEN 2003-2009 Nissan 350Z [Z33] / 2003-2007 Infiniti G35 Adjustable Front Sway Bar Kit - 304351

The STILLEN Adjustable Front Sway Bar Kit (304351) is a proven handling upgrade for the 2003–2009 Nissan 350Z (Z33) and 2003–2007 Infiniti G35, designed to significantly reduce body roll and sharpen cornering response without sacrificing ride quality.

Whether you’re just beginning your suspension upgrades or finishing a fully built setup with coilovers and control arms, a front sway bar plays a critical role in fine-tuning vehicle balance and stability. STILLEN sway bars deliver confident, predictable handling on the street, canyon roads, or track environments.

This front sway bar retains a nearly factory outer diameter, allowing reuse of OEM rubber bushings. This avoids the squeaking, increased maintenance, and frequent greasing associated with aftermarket urethane bushings. To achieve increased stiffness, STILLEN utilizes thicker wall tubing, resulting in a bar that is 7% to 70% stiffer than stock, depending on adjustment setting.

The bar features five adjustment positions, allowing drivers to tailor front-end response to driving style, tire choice, and suspension setup. Factory-style bushing collars are retained to prevent sway bar walking during aggressive cornering.

Manufactured in-house by STILLEN in Costa Mesa, California, this sway bar is finished in a durable red powder coat for long-lasting corrosion resistance and a clean performance appearance.

Fitment:

• 2003–2009 Nissan 350Z (Z33)
• 2003–2007 Infiniti G35
• Rear-Wheel Drive (RWD) models only
• Not compatible with AWD models

Key Features:

• Adjustable front sway bar kit
• Reduces body roll and improves cornering stability
• 5-way adjustable stiffness (approximately 7–70% stiffer than stock)
• High-strength aircraft-grade steel construction
• Retains OEM-style bushings and bushing collars
• Red powder-coated finish for durability and corrosion resistance

Installation Notes:

• Direct bolt-on installation
• Reuses factory bushings
• Professional installation recommended for optimal setup

Technical Details:

• Part Number: 304351
• Manufacturer: STILLEN
• Position: Front
• Adjustment: 5-way adjustable
• Finish: Red powder coat
• Category: Performance Suspension / Sway Bars