GM 10 & 12 Bolt Rear Axle Disc Brake Conversion Kit with cross-drilled and slotted rotors and e-brake is an easy bolt-on solution for upgrading your GM rear-end to disc brake performance. This kit is designed for GM rear axles with coil springs and shocks that mount on the backside of the axle housing.

Note:

• Will NOT Fit These Applications:Axle Flange is too large to fit into the hat of the rotor. See above dimensions before ordering.
  • 1964-1965 LeMans, Tempest & GTO
  • 1964-1972 Skylark & GS
  • 1970-1974 LeMans, Tempest, GTO, Cutlass & 442
• Maximum Axle Flange Face Diameter of 6.11 in. with 2.786 in. Maximum Hub Register to fit Rotor Hat. 
• 0.050 in. x 45-degree Chamfer 

How To Measure Rear Axle Hub Flange & Register Dimensions

• For Applications with Both Shocks Behind the Rear Axle Housing
• The installation of disc brakes will require the use of 15 in. wheels. Any attempt to install disc brakes with 14 in. wheels will be the customer’s responsibility
• Does Not Fit S-10 Chassis, Truck Frames
• This kit Requires a disc/disc proportioning valve.
• Bully recommends a 1.125 in. large bore master cylinder when adding disc brakes. 

Kit Includes:

• (1 Set) Loaded Red Powder Coated Calipers Left/Driver Side and Right/Passenger Side w/Self Adjusting E-Brake, D54 Pads, and Mounting Hardware
• (2) Hubless 10 Hole Cross-Drilled & Slotted 11 in. Rotors (Dual lug pattern 5 x 4.500 in. and 5 x 4.750 in.)
• (2) 10 mm Stainless Steel Brake Hoses
• (2) 10 mm Banjo Bolts
• (4) 10 mm Copper Washers
• (6) 3/8-24 x 50 Bolts
• (6) 3/8-24 Lock Nuts
• (6) 20 x 10.5 x 2 Washers
• (2) Brake Hose Clips
• (1 box) Left Driver Side & Right Passenger Side Caliper Brackets
• (6) Shims
• (2) Brake Hose Mounting Tabs
• (2) Square Backing Plates/Axle Flanges

Add Safety, Reliability, and Performance to Your Vehicle with Rear Disc Brakes

Bully Driveline 10 & 12-Bolt GM Rear Disc Brake Conversion Kits combine some of the best features available to make your selection and installation easy. Our brake kits include brackets, flanges, and large GM calipers with pads for small GM (4-bolt) housing ends. GM Rear Disc Brake Kits are available for standard (coil springs with both shocks behind the rear axle) or staggered (leaf springs with one shock forward of and one shock behind the rear axle) set-ups.