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Speedy Bill
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Speedway Rear Disc Brake Kit with Emergency Brake, 3 Inch Backspace

Specs
Centerline of Holes:
5.50
Material Type:
Cast Iron
Sold in Quantity:
Kit
Finish:
Natural
Bolt Pattern:
Multi: 5 on 5"/4.75"/4.50"
Thread Pitch:
7/16"-20
Hardware Included:
Yes
Rotor Diameter:
11.75
Caliper Pistons:
Single
Rotor Thickness:
.81
Caliper Finish:
Natural
Parking Brake Provision:
Yes
Rotor Construction:
Vented
Rotor Hat Bolt Pattern:
8 x 7.00"
Garage Sale:
No
Rotor Location:
Rear
Rotor Shape:
Round
Drilled:
No
Slotted:
No
Notes
Includes rotors, rotor hats, caliper brackets, calipers, pads, and hardware.
Speedway Rear Disc Brake Kit with Emergency Brake, 3 Inch Backspace
Speedway Rear Disc Brake Kit with Emergency Brake, 3 Inch Backspace

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What's in the Box

Replace those old drum brakes with modern rear disc brakes. This affordable rear disc brake kit conversion gives you an emergency brake just like your family car has. The steel caliper bracket welds to your 3" axle tube, so it will fit virtually any application. The calipers accept either GM or Lokar type E-brake cables and are tapped to accept the common 7/16"- 20 banjo fittings. The 11-3/4" x .81" vented iron rotors will give you plenty of stopping power.

Steel rotor hat fits 5 on 4-1/2", 5 on 4-3/4", and 5 on 5" bolt patterns and has a 3" backspace.

NSRA Legal

910-31933 Instructions (PDF)

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See Application tab for model-specific information.

EC80FU E-Brake Cable Instructions (PDF) 

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*NOTE*: If using these cables with Ford Explorer-style (such as our 910-31938), Wilwood, or late model Corvette rear disc brakes with internal shoe-type emergency brake, you will need our nut kit listed 916-41021 and E-Brake clevis 491-81FC (at right).

Basic Weld-On Rear Disc Brake Kit for 1978-88 GM Caliper, 3 In BS
SKU-91031925
                        

Replace those old drum brakes with modern rear disc brakes. Included steel caliper brackets weld to your 3" tube rearend, making this a universal kit for a variety of applications. Basic kit includes caliper brackets for '78-'88 GM metric car front calipers, Pro-lite vented .810" x 11-3/4" iron rotors, steel brake hats (3" backspace, 6-1/4" I.D.), and rotor bolts.

Hat fits 5 on 4-1/2", 5 on 4-3/4" and 5 on 5" bolt circles.

910-31925 Instructions (PDF)

Speedway Rear Disc Brake Kit with Emergency Brake, 1.94 Inch Backspace
SKU-91031934
                        Replace those old drum brakes with modern rear disc brakes. This affordable rear disc brake kit conversion gives you an emergency brake just like your family car has. The steel caliper bracket welds to your 3" axle tube, so it will fit virtually any application. The calipers accept either GM or Lokar type E-brake cables and are tapped to accept the common 7/16"- 20 banjo fittings. The 11-3/4" x .81" vented iron rotors will give you plenty of stopping power. 

Wilwood aluminum rotor hat fits 5 on 4-1/2", 5 on 4-3/4", and 5 on 5" bolt patterns and has a 1.94" backspace.

NSRA Legal

910-31934 Instructions (PDF)