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Optimize Your Toyota Sienna Suspension

The Firestone Coil-Rite Air Helper Spring Kit (Part #4155) is designed to transform the suspension of your Toyota Sienna. If you find your van sagging when fully loaded with passengers or cargo, this kit is the perfect solution. By installing these air springs inside your existing coil springs, you add a variable spring rate that provides the extra support needed for heavy-duty use.

Performance Benefits

• Load Leveling: Eliminates rear-end sag, keeping your van level and stable.
• Improved Handling: Enhances cornering and reduces body roll for a safer driving experience.
• Adjustable Pressure: Easily adjust the air pressure to accommodate different weights and road conditions.
• Durable Construction: Made from high-quality, elastic polyurethane for long-term reliability.
• Better Braking: Maintains proper vehicle balance, leading to more consistent and effective braking.

The Coil-Rite system supports 500-1000 lbs. per set (not to exceed the vehicle's GVWR), making it an excellent choice for families who frequently carry heavy loads or tow small trailers. Because the air springs are adjustable, you can return to a comfortable, factory-like ride quality when you aren't hauling heavy gear. This kit is a cost-effective way to improve the safety and performance of your vehicle. Discover the best in suspension technology and load management solutions for your Toyota Sienna at GGCRACING.