RideTech 30142000 - 2-Way Analog Compressor System, 3 Gallon Engine Mounts 1960-87 Chevy GMC C10 C15 C20 Truck These aluminum axle-pinion shims are

These aluminum axle-pinion shims are a must when dialing in your suspension

Will work with most 15" disc brake wheels or aftermarket wheels

Available in Stock height

Available for Small block or Big block applications

Integrated exhaust passages allow up to 3" exhaust pipes

RideTech 30142000 - 2-Way Analog Compressor System, 3 Gallon Engine Mounts 1960-87 Chevy GMC C10 C15 C20 Truck These aluminum axle-pinion shims areBy today's standards, we recommend that a 4 way control system be used to control your air suspension. There are several benefits: It cures air transfer problems. You have the ability to level the vehicle. Compensate air pressure for extra weight, suspension bind, or to overcome alignment changes as the vehicle is raising or lowering. Faster response times. It raises the vehicle faster because you have 4 orifices flowing air instead of 2. At this