Product Summary

Front Position, 5 on 4.75" Bolt Pattern, Powder Coated

    Comes as a Kit

    Key Specs

    MFG. Part #91664003
    BrandSpeedway Motors
    Rotor Diameter11 Inch
    Rotor TypeVented

    Need To Know

    This Product Will Ship Free

    Shipping Policies & FAQs

    Quick and Easy Returns

    Return Policy


    Our all-inclusive disc brake conversion kit makes it easy for the budget minded hot rod enthusiast to convert their drum brakes to disc brakes. The GM full size kits won't require you to swap out spindles, saving you time and money. The included power brake conversion gives you full braking power. 

    Full Size Chevy 1955-58 Complete Stock Height Disc Brake Kit Includes

    • 11" Rotors
    • Large Single Bore GM Calipers w/ Pads
    • Caliper Brackets
    • Hoses with Banjo Bolts
    • Bearings
    • Seals
    • Dust Caps
    • Spindle Nuts
    • Spindle Washers
    • All Hardware

    1955-1958 GM Full Size 8" Dual Zinc Booster Conversion Kit (Impala, Bel Air, Biscayne)


    • 1" Bore Dual Bail Cast Iron Master Cylinder
    • Brass Proportioning Valve Kit for Left Mount
    • 8" Dual Zinc Booster w/ Firewall Brackets
    • Pedal Extension & Clevis



    MFG. Part #91664003
    BrandSpeedway Motors
    Rotor Diameter11 Inch
    Rotor TypeVented
    Bolt Pattern5 on 4.75"
    Caliper PistonsOne
    Caliper FinishPowder Coated
    Parking Brake ProvisionNo
    Minimum Recommended Wheel Diameter15 Inch
    Rotor Thickness1"
    Rotor StyleDrilled and Slotted
    Front Rotor IncludedYes
    Front Rotor Diameter11 Inch
    Rear Rotor IncludedNo
    Front Caliper IncludedYes
    Front Caliper Piston Quantity1
    Front Caliper MaterialCast Iron
    Front Caliper FinishPowder Coated Black
    Rear Caliper IncludedNo
    Front Spindles IncludedNo
    Master Cylinder IncludedYes
    Brake Booster IncludedYes
    Application TypeDisc/Drum
    Brake Booster Diameter8 Inch
    Brake Booster FinishZinc
    Brake Booster MaterialSteel
    Brake Booster TypeVacuum Diaphragm Dual
    Brake Hose MaterialRubber
    Brake Hoses IncludedYes
    Master Cylinder Bail TypeDual Bail
    Master Cylinder Bore Size1 Inch
    Master Cylinder FinishNatural
    Master Cylinder MaterialCast Iron
    Master Cylinder Port Sizes9/16-18" & 1/2-20"
    Mounting Bracket IncludedYes
    Brake Pedal Rod IncludedYes
    Proportioning Valve LocationLeft Mount
    Front Caliper PistonSingle Large Piston
    Brake Booster Bracket FinishZinc