THE SUPERIOR MANUAL BRAKE CONVERSION PACKAGE

     Doesn't Your NBS Silverado / Sierra Deserve the Best?

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1999-2007 NBS Silverado / Sierra Manual Brake Conversion Package for use with a 2002-2005 Trailblazer 1.0" Bore Master Cylinder or 2006-2009 Trailblazer 1.062" Master Cylinder.

Stock front Disc, Rear Drum, I would recommend a 1.0" bore master cylinder.

Stock front disc, stock rear disc, I would recommend a 1.062" bore master cylinder.

The 1999-2003 Silverado 1.25" bore master cylinder will bolt up also, but usually the bore is too large for manual brakes and the reservoir is too tall to fit under the cowl of the truck.  The shorter 2002-2009 Trailblazer master cylinder's reservoir will swap in place of the Silverado's reservoir.

The 2004 and up Silverado master cylinders will NOT work.

Almost any older GM master cylinder can be used.  Message me if you need confirmation. 

**NOTE:  This kit will require you to remove the pedal from under the dash, drill a 35/64" hole in the brake pedal, and press out the original vacuum booster pin with a hydraulic press to be installed correctly.  Please contact us for additional details about the install. (PH:  832-264-5566)

This NBS Silverado / Sierra Manual Brake Conversion Package Comes with:

• 6061-T6 ALUMINUM adapter plate with master cylinder mounting studs
• 6061-T6 ALUMINUM master cylinder spacer
• Matching Rubber Firewall Gasket - Keeps the engine bay sealed from the cars interior.
• Stainless Steel Mounting Hardware - NO rusty bolts or nuts
• Adjustable Pushrod Assembly - Engineered to work with and function correctly with the OBS Silverado / Sierra and a Strange or Aftermarket Master Cylinder.
• Detailed (5 Page) Installation Manual

Benefits:

• Designed to use your stock master cylinder that came on your truck originally.
• 6.5 to 1 Pedal Ratio - Creates less effort by the driver to stop the car and multiplies the fluid pressure in the system.  No other manual brake conversion kit can match this.
• GM Bolt Pattern on the Adapter Plate.
• Better pedal modulation for consistent braking - No low engine vacuum issues to worry about.
• Uses your original brake light switch at no extra cost - No additional parts or money needed to install a brake light switch.

The adapter plate is CNC machined by a water jet from rigid 1/2” thick aluminum with dimensions that covers up the hole in the firewall after you remove the power booster. This modification will clean up your firewall by getting rid of the big, bulky power booster.  Racers do this swap when their engine does not make enough vacuum to operate the power booster, to shed a few pound to make their car lighter, or to clean up the engine bay.  The pro-touring fans use manual brakes to get a better “feel” of their brakes when heading into a corner at a high rate of speed.  The adapter plate can also be polished up to a mirror finish if needed.

Remember:

• Higher Pedal Ratio = Less Leg Effort = Increased Braking Performance
• Kit comes with a gasket matched to the adapter plate to seal the passenger compartment from the engine bay.  The other kits do not offer a gasket in their kits.

Parts to Enhance Your Manual Brakes on Your Truck or SUV:

Brake Line Pressure Comparison

Leg Force     Pedal Ratio     Master Cylinder Bore     Caliper Piston Size     Clamping Force

100               6 to 1               7/8" (0.875")                    2.5"                            4898 lb of clamping force with a manualbrakes.com kit.

100               5.5 to 1            1-1/32 (1.03")                  2.5"                             3240 lb of clamping force with other manual brake systems.

There is 34% more clamping force than any other other manual brake systems.

PLEASE ask any questions before you buy.  I will be happy to answer any of your questions.