Product Summary

Rear Position, 11 Inch Rotor Diameter, Natural

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    Key Specs

    MFG. Part #91664092
    PositionRear
    Wheel Bolt Pattern (in.)5x4.5 in. | 5x4.75 in.
    Wheel Bolt Pattern (mm)5x114.3 mm | 5x120.65 mm
    Rotor Diameter11 Inch
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    Need To Know

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    Speedway Motors 91664092 Details

    Complete Rear Disc Brake Conversion Kit Includes:

    • 11" GM Rotors Multi Pattern
    • Fits 5x4.75" w/ 7/16 Studs & 5x4.5" w/ 1/2 Studs
    • Large GM Calipers
    • D154 Pads Included
    • Caliper Brackets & Spacers
    • Bracket Hardware
    • Flex Hoses & Clips - 18" / 10mm-1.5

    Tech Notes:

    • Does not fit S-10 Chassis or truck frames
    • Maximum diameter of 6.11" to fit rotor hat.
    • Rotor Center = 2 3/4" - Rotor Hat Section Inside Diameter = 6-1/8" You will need to modify your axles if they will not fit inside the rotor
      hat and you will need to modify the rotor if the center hole is too small for your axles.
    • .050x45 Degree Chamfer
    • 2.786" max register axle
    • Does not Fit 14" Rims Must use 15" or larger
      When installing rear disc brake kit a disc/disc proportioning valve with a 1-1/8" bore master cylinder will be needed.
    • This kit will push your wheels out an additional .125” per side, longer wheel studs may be required after installation of this kit

    Speedway Motors 91664092 Specifications

    KEY SPECS
    MFG. Part #91664092
    BrandSpeedway Motors
    PositionRear
    Wheel Bolt Pattern (in.)5x4.5 in. | 5x4.75 in.
    Wheel Bolt Pattern (mm)5x114.3 mm | 5x120.65 mm
    Rotor Diameter11 Inch
    Rotor TypeVented
    Caliper PistonsOne
    Caliper FinishNatural
    Parking Brake ProvisionNo
    Minimum Recommended Wheel Diameter15 Inch
    Rotor ShapeRound
    Hardware IncludedYes
    Rotor StylePlain Face
    Front Rotor IncludedNo
    Front Rotor Diameter11 Inch
    Front Caliper IncludedNo
    Rear Caliper IncludedYes
    Front Spindles IncludedNo
    Master Cylinder IncludedNo
    Brake Booster IncludedNo
    Brake Hoses IncludedYes
    Rear Rotor IncludedYes
    ColorNatural
    Mounting Bracket IncludedYes
    Front Caliper FinishNatural
    Bolt Pattern5 on 4.5" | 4.75"
    Front Caliper Piston Quantity1
    GENERAL
    Sold in QuantityKit
    Rotor Drum I.D.6.1875"
    Rotor Thickness1"
    Rotor I.D.2.75"
    Parking Brake Cables IncludedNo
    Brake Hose MaterialRubber
    Track Width Increase0.25"

    Ratings & Reviews

    5

    2 Reviews

    Overall Assessment

    Customers highly appreciate our product for its perfect fit and quality, praising it as an excellent upgrade from their previous setups. They find the disc brakes efficient and practical for use, reinforcing its usability. The superior aspects of our product have led customers to commit to future purchases, reflecting positively on its performance and making it a standout against competitors.

    5

    2 reviews

    5

    2

    4

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    I will be coming to motor sports for future purchases.

    5.0

    2 years ago

    59 Sanchha

    Phx, Az

    Verified

    I installed disc brakes on the rear.

    Would Recommend

    Perfect fit.

    5.0

    4 years ago

    Matt

    Utah

    Verified

    Works great. Excellent upgrade over the stock set up.

    Would Recommend

    Showing 2 of 2 reviews

    Questions & Answers

    2 Questions2 Answers

    Will this kit fit a 1960 Corvette?

    by Mark

    5 months ago

    1 answer

    Do you sell this kit with crossed drilled and slotted rotors with an E brake for a 1955 Chevy Belair? If so whats the part number thank you.

    by Art

    a year ago

    1 answer

    2 of 2 questions shown

    Fitment

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