Camburg Engineering CAM-320009 Long Travel Spring-Under Kit for 2WD/4WD Toyota Tundra

The Camburg Engineering CAM-320009 Long Travel Spring-Under Kit is a complete rear suspension overhaul engineered for serious off-road builds on the 2007–2021 Toyota Tundra (2WD and 4WD). Designed to work in conjunction with a bed cage system, this kit unlocks maximum usable rear wheel travel for prerunner and race-inspired builds.

The spring-under configuration relocates the leaf springs below the axle, delivering significant performance advantages over a traditional spring-over or stock setup. Key performance benefits include:

• Increased rear wheel travel for aggressive off-road use
• Faster rebound and improved axle articulation
• More progressive spring arch for better bottoming control
• Reduced axle wrap under hard acceleration
• Rear lift without excessive ride height gain

At the heart of the kit are Deaver I96 leaf springs — co-developed with Deaver Spring for optimized travel and performance — paired with Camburg's own heavy-duty long travel shackles, axle spring perches, and U-bolt spring plates. Installation is largely bolt-on, though minor fabrication and welding is required for a proper fit.

What's Included:

• Deaver I96 Leaf Springs with U-bolts, bushings, and sleeves
• Camburg Long Travel Shackles
• Camburg Axle Spring Perches
• Camburg U-bolt Spring Plates

This kit is intended for experienced builders and enthusiasts. For best results, it is designed to be used alongside 2.5–3.0-inch diameter, 16–18-inch travel bypass shocks routed through the bed, along with compatible bump stops. Note: Minor fabrication and welding is required during installation.