Super Pro SPF2240HK Leaf Spring Shackle Bushing Kit

The Super Pro SPF2240HK is a complete leaf spring and shackle bushing kit engineered to restore and improve rear suspension performance. Leaf spring bushings stabilize the movement of the rear axle — worn or degraded bushings in this area allow the solid rear axle to shift, introducing rear-end passive steer that can make a vehicle feel unstable and unpredictable.

Worn leaf spring bushings are often overlooked during suspension upgrades, but their condition has a direct impact on handling. When these bushings deteriorate, the rear axle gains excessive freedom of movement, causing the vehicle to wander on the road and become unstable under heavy braking. These symptoms are especially pronounced when carrying a load or towing a trailer.

Why Upgrade to SuperPro?

• Manufactured from SuperPro's proprietary high-performance polyurethane compound for superior durability over OE rubber
• Reduced deflection compared to factory rubber bushings for more precise axle location
• Designed to outperform OE rubber bushings, which are only engineered for standard ride height, standard tires, and standard loads
• Increased service life, especially under the added stress of towing, hauling, or off-road use
• Kit format includes all bushings needed for a complete shackle bushing replacement

SuperPro polyurethane bushings are a direct-fit replacement that deliver measurably improved rear-end stability and control, giving your suspension the durability to handle demanding driving conditions.