Upgrade your Toyota truck’s performance with the RAS Suspension Kit—engineered for 2005–2025 models with axle-below leaf spring configurations. Built for towing, hauling, and everyday driving, this system strengthens your factory leaf springs by up to 50% while delivering improved stability, reduced squat, and a smoother, more controlled ride.
Unlike air bag systems, RoadActive Suspension is a fully mechanical, maintenance-free solution—no compressors, air lines, or ongoing adjustments required. Its progressive tension design adapts to load conditions, providing extra support when you need it and maintaining a comfortable ride when you don’t. Whether you’re towing an RV or hauling gear, this 3-in-1 system enhances safety and control without sacrificing comfort.
Fully assembled and ready to install, this bolt-on kit gets you back on the road fast with noticeable improvements in handling and ride quality.
Key Features:
• Fits 2005–2025 Toyota trucks (axle below leaf spring configuration)
• Strengthens factory leaf springs by up to 50%
• 3-in-1 system: helper spring, sway control, and traction support
• Reduces squat, body roll, axle wrap, and excessive bounce
• Progressive load support for improved towing and hauling
• Maintenance-free design—no air lines or adjustments needed
• Fully assembled for quick, bolt-on installation (~45–60 minutes)
• Durable, long-lasting performance trusted since 1998
Before You Order
Before ordering, compare part number 4614-SAT with the existing trailer leaf spring and installation requirements.
Frequently Asked Questions
Which part number identifies this trailer leaf spring?
The source identifies this product with part number 4614-SAT.
