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Part # 91031924

GM 10 & 12 Bolt Bolt-On Rear Disc Brake Kit w/ E-Brake

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  • If you don't want to spend an arm and a leg on a rear disc brake kit but want the ease of a bolt on system then this is the kit for you!
  • Fits GM 10 and 12 bolt rear ends in mid size cars. Will not fit full size cars, pickups, or 7.5" 10 bolt axles
  • Includes two bolt-on caliper brackets, two vented rotors, two new GM E- brake calipers and hardware

$470.99

kit

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$494.91

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Product Summary

GM 8.2 Inch 10-Bolt BOP, Rear Position, Natural

  • If you don't want to spend an arm and a leg on a rear disc brake kit but want the ease of a bolt on system then this is the kit for you!
  • Fits GM 10 and 12 bolt rear ends in mid size cars. Will not fit full size cars, pickups, or 7.5" 10 bolt axles
  • Includes two bolt-on caliper brackets, two vented rotors, two new GM E- brake calipers and hardware
  • Rotors have both 5 on 4-1/2" and 5 on 4-3/4" to accommodate a variety of wheels
  • Fits axle with a maximum flange diameter of 6-1/4" OD and brake register size of 2.78" or smaller

Comes as a Kit

Key Specs

MFG. Part #91031924
BrandSpeedway Motors
PositionRear
Rotor Diameter11.25 Inch
Rotor TypeVented

Need To Know

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Details

If you dont want to spend an arm and a leg on a rear disc brake kit and still have to weld the bracket on, weve got you covered. This complete kit includes two bolt-on caliper brackets, two 11-1/4" vented rotors, two GM emergency brake style calipers, brake pads and hardware.

  • Rotors have both 5 on 4-1/2" and 5 on 4-3/4" bolt circles
  • Fits axle with a maximum flange diameter of 6-1/4" O.D.
  • 2.780" rotor center hole
  • Includes emergency brake calipers
  • Does not fit all 10 & 12 bolt axles - check Applications for details
  • Requires 15" and larger wheels as 14" and smaller wheels will not clear application.  

For more details and installation photos, see this article in Super Chevy magazine.

Application

This kit will fit 10 & 12 Bolt (non-staggered shock) rear ends from:

  • 1964-77 Buick Skylark
  • 1964-73 Chevy Chevelle
  • 1964-79 Chevy Nova/Chevy II
  • 1964-77 Chevy El Camino
  • 1967 Camaro
  • 1970-77 Chevy Monte Carlo
  • 1964-71 Oldsmobile 442
  • 1964-77 Oldsmobile Cutlass
  • 1964-73 Pontiac GTO
  • 1964-77 Pontiac LeMans
  • 1964-70 Pontiac Tempest

The housing flange must have:

  • 3-1/8" center-to-center distance for the top two bolt holes
  • 2-11/16" center-to-center distance for the bottom two bolt holes
  • 2-7/16" distance from the center of the top bolt to the center of the bottom bolt
  • Axle Flange Identification Chart (GIF)

This kit requires 15" and larger wheels.

Note: This disc brake kit does NOT fit all 10 & 12 bolt rear axles. It does NOT fit full size car (Biscayne, Bel Air, Impala) or pickup rear axles.   Kit does not clear 14" and smaller wheels.  This kit does NOT work with staggered shock rear axle configurations as both calipers are positioned to the rear of the housing with this conversion brake kit.

Charts

Specifications

KEY SPECS
MFG. Part #91031924
BrandSpeedway Motors
PositionRear
Rotor Diameter11.25 Inch
Rotor TypeVented
GENERAL
Bolt PatternDual: 5 on 4.5" | 4.75"
Caliper PistonsOne
Caliper FinishNatural
ColorNatural
Parking Brake ProvisionYes
Rotor Thickness1.00"
Rotor ShapeRound
Hardware IncludedYes
Sold in QuantityKit
NotesIncludes rotors, calipers, pads, hardware, and caliper brackets.
Front Rotor IncludedNo
Rear Rotor IncludedYes
Front Caliper IncludedNo
Rear Caliper IncludedYes
Front Spindles IncludedNo
Master Cylinder IncludedNo
Brake Booster IncludedNo