Energy Suspension Hyper-Flex Rear Leaf Spring Bushing Kit - Black / Cadmium - Ford Compact Truck 1998-2011 4.2158G RS00500313 You can expect a major

You can expect a major improvement in throttle response and torque

Gaskets And Mounting Hardware Included

Update ECU Firmware and Adjust Rev Limiters 1 and 2

Will not fit 1962-64 Max Wedge heads

2300 / 4150 / 4500 Carburetors

Energy Suspension Hyper-Flex Rear Leaf Spring Bushing Kit - Black / Cadmium - Ford Compact Truck 1998-2011 4.2158G RS00500313 You can expect a majorProduct Description: Leaf Spring Bushing Kit Hyper Flex Rear Polyurethane Steel Black Cadmium Ford Compact Truck 1998 2011 Energy Suspension is the world's leader in developing and manufacturing performance polyurethane automotive suspension products. Energy Suspension state of the art on site new product development program which carefully analyzes various vehicle reactions equipped with Energy Suspension Performance Polyurethane technology. Energy