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$339.99
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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Speedway Rear Disc Brake Kit with Emergency Brake, 3 Inch Backspace
Part # 91031933
$339.99
each
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- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
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Details
Rotor Diameter:
11.75
Caliper Pistons:
Single
Caliper Finish:
Natural
Bolt Pattern:
Multi: 5 on 5"/4.75"/4.50"
Parking Brake Provision:
Yes
Rotor Hat Bolt Pattern:
8 x 7.00"
Drilled:
No
Slotted:
No
Rotor Thickness:
.81"
Rotor Shape:
Round
Rotor Construction:
Vented
Thread Pitch:
7/16"-20
Centerline of Holes:
5.50"
Material Type:
Cast Iron
Finish:
Natural
Hardware Included:
Yes
Sold in Quantity:
Kit
Notes:
Includes rotors, rotor hats, caliper brackets, calipers, pads, and hardware.
Info
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 Approved
910-31933 Instructions (PDF)
Instructions (PDF)Â
Caliper Adjustment Instructions (PDF)
Some parts are not legal for use in California or other states with similar laws/regulations
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.-
Weld-On 1978-88 GM Flat Mount Caliper BracketPart # 91641009Qty x 2
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Speedway Pro-Lite Vented Brake Rotor, 11.75 x .81 InchPart # 91031906Qty x 2
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Speedway Stamped Steel Disc Brake Rotor Hat, 3 Inch OffsetPart # 91031904Qty x 2
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Rotor Hat Bolt Set, 1/8 Inch ThickPart # 8352500071-1/8Qty x 2
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1978-Up GM Metric Emergency Brake Caliper, LH, 5.45 Mount BoltsPart # 91031046-LQty x 1
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1978-Up GM Metric Emergency Brake Caliper, RH, 5.45 Mount BoltsPart # 91031046-RQty x 1
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Instruct Sheet-Brake KitPart # 910319INSTQty x 1
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Reviews
Q & A
Videos & Articles
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by JohnLearn MoreIn this Tech Tip, John responds to a customer request for our recommendations on brake kits for his ’56 F100.
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by TimLearn MoreTim talks about the process of upgrading the factory hubs on his 1929 Roadster project with new manufacture units courtesy of Speedway Motors.
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Learn MoreGet an edge on some of the latest tools and equipment used in a street rod brake system. We'll teach you the basic principles on routing a custom brake system and how to use some of the latest double flaring tools.
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by TimLearn MoreWe get a lot of questions about brake kits so Tim gives a brief overview of disc brake setups.
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by JohnLearn MoreIn this Tech Tip, a customer asked about finding a set of disc brakes for his 1949 Ford F1 pickup, with one caveat. He wants to use the factory wheels.