Detroit Speed Front Speed Kit - 4-1/2 in Drop - Non-adjustable - Black - GM Fullsize Truck 1971-72 DX2500K This proprietary design allows for

This proprietary design allows for maximum range of head motion with superior frontal and side impact protection

Adapter may also be mounted in a window opening to funnel air directly to the driver via helmet hose

238 lb/in Spring Rate

2008-2009 GMC C6500 Topkick

Detroit Speed Front Speed Kit - 4-1/2 in Drop - Non-adjustable - Black - GM Fullsize Truck 1971-72 DX2500K This proprietary design allows forMust use at least 17" wheels with a minimum inside wheel diameter of 16. 250". GMT 800 style brakes are required for this installation see instructions for details. This kit is designed to be used with a steering box. Improve the handling and performance of your truck while lowering the front ride height by 4. 50 inches for an aggressive look 100% bolt on for a quick and easy installation in your garage 2. 50 inch drop spindle assembly includes made