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Speedway Mopar 12 in. Rotor High Performance Disc Conv. Kit
Speedway Mopar 12 in. Rotor High Performance Disc Conv. Kit

Speedway Mopar 12 in. Rotor High Performance Disc Conv. Kit

Front Position, 5 on 4.5" Bolt Pattern, 12 Inch Rotor Diameter, Vented Rotor Type, Natural

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Speedway Mopar 12 in. Rotor High Performance Disc Conv. Kit
Speedway Mopar 12 in. Rotor High Performance Disc Conv. Kit
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We estimate this item will ship on or before January 22nd.
Part # 91664040
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  • This item ships directly from the manufacturer. It may take an additional 2 business days for Speedway Motors to ship this item.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.

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Bolt Pattern:
5 on 4.5"
Rotor Diameter:
12 Inch
Rotor Type:
Caliper Pistons:
Caliper Finish:
MFG. Part #:
Minimum Recommended Wheel Diameter:
15 Inch
Rotor Style:
Drilled and Slotted
Front Rotor Included:
Rear Rotor Included:
Front Caliper Included:
Front Caliper Material:
Cast Iron
Front Caliper Finish:
Powder Coated Black
Rear caliper Included:
Front Spindles Included:
Master Cylinder Included:
Brake Booster Included:
Application Type:
Disc/ Drum
Brake Booster Finish:
Powder Coated Black
Brake Booster Material:
Brake Booster Type:
Brake Hose Material:
Stainless Steel Braided
Brake Hoses Included:
Master Cylinder Bore Size:
1 Inch
Master Cylinder Finish:
Powder Coated Black
Master Cylinder Port Sizes:
9/16"-18 & 1/2"-18


Like the Wilwood look but don't want to drop the big money? This kit will have the oval style black master cylinder you are looking for with out the high price tag. Couple that with the powerful 8" dual power brake booster & 12" brakes, you'll be stopping on a dime and looking great too! Want BIG BRAKES on your MOPAR vehicle? This MOPAR disc brake kit features the large caliper brackets & 12" drilled & slotted rotors! The big brake kit has the upgraded slider type Kelsey Hayes calipers powder coated black. What about replacement parts? You can easily replace your pads when the time comes at your local automotive store. Keep your restoration on track with upgraded parts like the black oval master cylinder and the upgraded power of 12" brakes.

Complete Stock Height Kit Includes

  • 12" Rotors Drilled & Slotted
  • Big Brake Caliper Brackets
  • Kelsey Hays Slider Type Loaded Large Single Bore Calipers Powder Coated Black
  • Backing Plates
  • Stock Height Spindles
  • Braided Stainless Steel Hoses
  • Bearings, Seals, Dust Caps, Spindle Nuts, Spindle Washers, All Hardware

Wilwood Oval Style Tandem Black Master Cylinder w/ 8" Dual Powder Coated Black Booster Conversion

  • Wilwood Oval Style Master
  • 8" Dual Powder Coated Black Brake Booster
  • Disc/ Drum Aluminum Proportioning Valve(2) 3/8"-24 For Front Brakes & (1) 9/16"-18 For Rear Brakes
  • Powder Coated Black Left Mount Bracket
  • Stainless Steel Valve Lines
  • Brake Light Warning Switch
  • Aftermarket Firewall bracket powder coated black.

This is a GM universal brake booster & master cylinder converison kit for your A, B & E Body Mopar. Line fittings will be difrerent than the original Mopar fittings. If you are looking for an O.E.M. Replacement please see part number BCK8536-1 & BCK8536-2

Installation Instructions (PDF)

Some parts are not legal for use in California or other states with similar laws/regulations

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What's In The Kit

Each kit from Speedway Motors is carefully packaged and delivered right to your door. Below is a list of all the items you should expect to receive when you order this kit. Some of these items may also be available for sale individually if you're here looking for replacement parts.
  • 91664040 BOX 1
    Qty x 1
  • 91664040 BOX 2
    Qty x 1
  • 91664040 BOX 3
    Qty x 1

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