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GM 10/12-BOLT, 305mm C5/C6, PARKING BRAKE

The KORE3 305mm C5/C6 Rear Big-Brake Kit with drum-in-hat parking brake (DIHPB) for the early GM 10/12-bolt passenger car rear axle application adapts high-performance, high-quality, 5th or 6th generation Corvette (C5/C6) brake components to your early GM 10/12-bolt equipped car. Finally, a rear big-brake solution with the best of both worlds in both performance and convenience. Kit includes provisions for ø190mm, drum-in-hat, C5/C6 parking brake utilizing the drum that is integrally cast into the C5/C6 rear rotors.

Parking brake cables are not included. We recommend Lokar or equivalent aftermarket cables for use with this kit. Parking brake mechanisms can be assembled such that cables can be routed above or below the axle centerline and either pull forward or rearward for universal fitment of numerous applications, stock or custom.

Application Notes:

Listed in the table below are makes and models compatible with this KORE3 rear disc conversion kit from the factory. The list is accurate to the best of our knowledge at this time, but is intended for your reference only. Please refer to the notes for application specific information and contact us if you have any questions regarding compatibility.

KORE3 GM 10/12-Bolt Application Chart
Year Make Model Notes
1964-1979 Buick Gran Sport, Skylark, Sommerset Regal, Special 1, 2, 3, 4
1973-1977 Buick GNX, Grand National, Regal 1, 2, 3, 4
1962-1979 Chevrolet Chevy II, Nova 1, 2, 3, 4
1964-1977 Chevrolet Chevelle, El Camino, Laguna, Malibu 1, 2, 3, 4
1967-1981 Chevrolet Camaro 1, 2, 3, 4
1968-1977 Chevrolet Monte Carlo 1, 2, 3, 4
1991-2002 GM S-Series Truck/SUV 1, 2, 3, 4
1964-1977 Pontiac GTO, Lemans 1, 2, 3, 4
1967-1981 Pontiac Firebird, Trans Am 1, 2, 3, 4
1973-1977 Pontiac Grand Prix 1, 2, 3, 4
1967-1977 Oldsmobile 442, Cutlass 1, 2, 3, 4

  1. This kit is compatible with C-clip axles only.

  2. Axle flanges may need to be machined for proper rotor fitment: 5.85" OD with a .08" x 45 degree chamfer preferred. Most axle shafts will need to be modified.

  3. Minimum 17" wheels are recommended. Not all 17" wheels will fit. Verify wheel fitment prior to ordering using the appropriate KORE3 fitment template. Wheel fitment is the buyer's responsibility. Please contact us if you have any questions regarding your specific application or the proper use of the templates.

  4. Vehicles equipped with staggered shocks may require two left hand calipers for proper caliper bleeder screw placement. The brackets are ambidextrous and can be installed facing forward or rearward, inline with the pinion. If you select the "Staggered Shock" option below, we will supply your kit with (2) left hand calipers.

The following items are included in this kit:

  • Installation instructions

  • KORE3 GM 10/12-Bolt Big-Brake Bracket Kit w/PB

  • KORE3 190mm, Drum-In-Hat, C5/C6 Parking Brake Kit

  • FlexKORE™ 2-piece Brake Line Kit

  • C5/C6 Rear Caliper Kit

  • C5/C6 Rear Pad Kit

  • C5/C6 Rear Rotors

Build your kit selecting from the options below. If you have any questions regarding your specific application or don't see an option you may prefer, please don't hesitate to contact us.

Price: $1,394.00
KORE3 News:

Notice: C6 Z06 calipers availability is limited. Please contact us for current stock and color options.

KORE3 is a proud dealer for Hydratech Braking Systems™, the industry leader in hydraulic brake assist conversions for the pro-touring market.

Upcoming Closures:

Independence Day (Observed): Monday July 5th

Labor Day: Monday Sept 26th

KORE3 is continuing operations during the COVID-19 coronavirus pandemic with the understanding that we will continue to do what we can, when we can, without putting ourselves, our customers, our vendors, or our community at unnecessary risk. Your patience is much appreciated while we figure out how to provide the same great products and service we've always offered in this new and challenging business environment.