Description This is a complete bolt-on coilover mounting kit for 84-87 C4 Corvettes.   The kit is optimized around a 1″ to 1-1/2″ drop from stock and exact height is easily fine-tuned with the coilover adjuster nuts.  The coilover kit makes spring changes very easy so you can tune the ride and balance of the car.  There is also a large selection of spring rates available.  The factory C4 composite leaf springs are only available in a very limited number of rates and some are difficult to find now.  The front coilover kit also includes the front sway bar heavy-duty, hi-performance end-link kit for all 84-87 Corvettes which uses HD chromoly aircraft-grade heim joints with teflon liners.  It works with all 84-87 C4 OEM front sway bars and eliminates all rubber bushings by using special CNC machined inserts and adapter brackets. 84-87 C4 Front Sway Bar Relocation Kit is required for clearance and available from After Dark Speed. HD front endlink is not required since it is included with the front coilover kit.   SPECS: Front Shock Shock min-max C-C: 9-12″ Mounting: 1/2″ID x 5/8″wide monoball upper & lower 2-1/4″ID coilover spring recommended Rear Shock Shock min-max C-C: 10-14″ Mounting: 5/8″ID x 1/2″wide monoball upper & lower 2-1/4″ID coilover spring recommended   All parts are powder coated, zinc plated, and black anodized for corrosion resistance. All hardware required to install is included. Initial setup information provided in the instructions. 100% made in USA