Chevrolet Silverado 2500 RoadActive Suspension HD

RoadActive Suspension HD Leaf Spring Assist | Chevrolet Silverado 2500 (2010-2025)

4blok is the proud Authorised Distributor for RoadActive Suspension.

The Maintenance-Free Alternative to Airbags

While traditional airbags can help level a load, they often introduce new problems like air leaks, complex plumbing, and a "bouncy" unloaded ride. The RoadActive Suspension (RAS) HD kit offers a superior mechanical solution:

• "Fit and Forget" Reliability: Being 100% mechanical, there are no rubber bags to perish, air lines to crack, or compressors to fail.
• Zero Ongoing Maintenance: Once installed and set, you never have to check air pressure again. It is always ready for a load.
• Better Ride Quality: Unlike airbags that resist weight at the frame, RAS works with your leaf springs in a progressive manner. This means you maintain a factory-smooth ride when empty, with immediate support as soon as you hitch up.

Performance Benefits

• Eliminates Squat & Sag: Specifically designed to reduce rear-end squat by up to 2–3 inches under heavy towing or hauling.
• 3-in-1 Enhancement: Functions simultaneously as a helper spring, sway bar, and traction bar to significantly reduce body roll and axle wrap.
• Increased Stability: Improves overall vehicle balance and tire contact, making highway towing at speed much safer and more controlled.

Technical Specifications

• Part Number: 3611-HD
• Condition: New
• Compatibility: Chevrolet Silverado 2500 (2010–2025)
• Type: Heavy Duty (HD) — Recommended for frequent towing or heavy ball weights
• Material: High-carbon steel coil tension springs

Simple 1-Hour Installation

The 3611-HD kit arrives fully assembled and requires no drilling or major modifications.

1. Preparation: Raise the vehicle so the rear axle hangs free.
2. Mounting: Position the RAS unit over the rear leaf spring.
3. Tensioning: Use the included spacers (25% or 50% settings) to set your desired level of support.
4. Completion: Tighten the jam nuts and you're ready to tow.

Warranty & Support

• 5-Year Warranty: Every kit is backed by a 5-year warranty against defective materials and workmanship.
• Money Back Guarantee: Includes a 30-day money-back guarantee for peace of mind.