JEGS 555-631788 GM 10 & 12 Bolt Rear Disc Brake Conversion Kit

JEGS 631788 GM 10 & 12 Bolt Rear Axle Disc Brake Conversion Kit for GM A-Body Cars 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. 

JEGS 555-631788 GM 10 & 12 Bolt Rear Disc Brake Conversion 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 11 in. Plain Rotors (Dual Lug Pattern: 5 x 4.500 in. and 5 x 4.750 in.)
• (2) 10 mm Rubber 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 Flange

JEGS 555-631788 GM 10 & 12 Bolt Rear Disc Brake Conversion Kit Notes:

• Will NOT Fit These Applications: Axle Flange is too large to fit into the hat of the rotor. See the dimensions below 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.

How To Measure Rear Axle Hub Flange & Register Dimensions

• Fits GM Cars with Both Shocks Mounted Behind the Rear Axle Housing
• The installation of disc brakes will require the use of 15 in. wheels
• This brake conversion kit will not work with 14 in. wheels
• Does Not Fit S-10 Chassis or Truck Frames
• This kit Requires a disc/disc proportioning valve. We recommend JEGS 555-63025 sold separately.
• We recommend a 1.125 in. large bore master cylinder when adding disc brakes. We recommend JEGS 555-631200 sold separately.