Product Summary

Front Position, 5 on 4.75" Bolt Pattern, Natural

  • Upgrade your 1964-74 GM A/F/X body to an 11" disc brake for improved stopping performance
  • Must be used with stock style disc brake spindles and 15" or larger disc brake compatible wheels
  • Calipers feature larger 2-3/4" bore from 1969-77 GM midsize cars with 7/16"-20 inlet
  • New 11" vented iron rotor with original 5 on 4-3/4" wheel bolt pattern and 7/16" studs
  • Fits 1964-72 Chevelle, Malibu, ElCamino

Comes as a Kit

Key Specs

MFG. Part #91031958
BrandSpeedway Motors
Rotor Diameter11 Inch
Rotor TypeVented

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Front disc brakes provide a significant improvement in braking performance versus the drum brakes your car came with. This complete front disc brake conversion kit fits 1964-72 GM A-Body, 1967-69 GM F-Body and 1968-74 X-Body using your stock disc brake spindles or our new replacement stock height disc brake spindles # 910-34900.

Kit includes 11" diameter vented brake rotor with 5 on 4-3/4" wheel bolt pattern, '69-'77 GM style calipers (7/16"-20 inlets), caliper brackets, brake pads, backing plates, rubber brake lines, and all necessary bearings, seals and hardware for an easy, complete installation onto factory disc brake spindles.

Note:  Brake kit will not fit our 2" dropped spindles # 910-34906 or stock drum brake spindles. Must be used with stock style disc brake spindles and 15" diameter or larger wheels.


Brake kit fits:

  • 1964-72 Chevelle, Malibu, El Camino
  • 1967-69 Camaro, Firebird
  • 1968-74 Nova, Ventura, Omega, Apollo
If you are going to use this kit on an A-Body Oldsmobile (Cutlass, 442), Pontiac (GTO, Lemans) or Buick (Skylark, GS), it will not directly bolt on to the original spindles even with grinding the .610" off the stud at the top. The lower bolt holes in the original spindles are 7/16" and the bracket and bolts 1/2". The upper bolt holes on the original spindles are 1/2" with the brackets and bolts being 5/8". You will need to replace or modify the spindles.



MFG. Part #91031958
BrandSpeedway Motors
Rotor Diameter11 Inch
Rotor TypeVented
Bolt Pattern5 on 4.75"
Caliper PistonsOne
Caliper FinishNatural
Parking Brake ProvisionNo
Minimum Recommended Wheel Diameter15 Inch
Rotor Thickness1.05"
Rotor ShapeRound
Stud Diameter.44"
Stud Length.80"
Thread Pitch7/16"-20
Centerline of Holes7.00"
Hardware IncludedYes
Sold in QuantityKit
NotesIncludes rotors, backing plates, bearings and seals, calipers, pads, brake hoses, brake tabs, and caliper brackets.
Rotor Material TypeCast Iron
Front Rotor IncludedYes
Front Rotor Diameter11 Inch
Front Caliper IncludedYes
Front Caliper Piston Quantity1
Front Caliper FinishNatural
Rear Caliper IncludedNo
Front Spindles IncludedNo
Master Cylinder IncludedNo
Brake Booster IncludedNo
Rear Rotor IncludedNo