Spongy brakes?...all OBS trucks have them. Especially after years of leaky brakes and hard stops for the ice cream truck. The NBS master cylinder upgrade provides increased fluid pressure and helps reduce the chance of air in your brake lines. 

The conversion kit included is everything except a bench bleeder kit and the brake fluid to make the swap possible.

Early CK trucks with a proportioning valves/rear ABS get a nice little stainless steel hardline upgrade!

Full ABS equipped trucks and SUVs require bleeding your electric ABS module via a scanning tool, after bleeding your brake calipers.

• Includes NEW Stainless Steel Lines (Non-ABS Mod) or Adapter Fitting (ABS)
• Genuine GM ACDelco Master Cylinder
• Anodized Billet Cap
  
• Use Only DOT3 Brake Fluid
  Electronically Bleed Your ABS Module