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$249.99
Front Disc Brake Kit GM Metric/Mustang II to 1949-54 Chevy, 5 on 4-1/2
Front Disc Brake Kit GM Metric/Mustang II to 1949-54 Chevy, 5 on 4-1/2
Universal Fit, Front Position, 5 on 4.5" Bolt Pattern, 9.25 Inch Rotor Diameter, Natural
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Front Disc Brake Kit GM Metric/Mustang II to 1949-54 Chevy, 5 on 4-1/2
Part # 91031955
$249.99
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Details
Position:
Front
Bolt Pattern:
5 on 4.5"
Rotor Diameter:
9.25 Inch
Rotor Type:
Vented
Caliper Pistons:
Single
Caliper Finish:
Natural
MFG. Part #:
91031955
Rotor Thickness:
.88"
Rotor Shape:
Round
Stud Diameter:
.50"
Stud Length:
1.25"
Thread Pitch:
1/2"-20
Centerline of Holes:
5.50"
Finish:
Natural
Hardware Included:
Yes
Sold in Quantity:
Kit
Notes:
Includes rotors, bearings and seals, calipers, pads, brake hoses, brake tabs, and caliper brackets.
Rotor Material Type:
Cast Iron
Info
An economical, lightweight brake kit for 1949-54 Chevy car spindles. Your stock Chevy spindles must be machined, or use Speedway '49-'54 Chevy-style spindles. This kit uses 9-1/4" Mustang II vented rotors with common GM metric calipers.
- Typically used on Model T and Model A to 1936 Ford front ends
- For use on street rod tube front axles when using 1949-54 Chevy style spindles
- Will not work with stock 1949-54 steering arms
- Not to be installed on stock 1949-54 Chevy vehicle front ends
910-31955 Instructions (PDF)
Notes
- Clearance between king pin axle boss and caliper bracket must be checked upon installation. If interference is found, the edge of the bracket will need to be clearanced/machined to allow for sufficient clearance though the complete turning radius.
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.
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Mustang II Disc Brake Rotor, 5 on 4-1/2 InchPart # 91031001Qty x 2
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IMCA Approved 1978-88 GM Metric LH Brake Caliper, 7/16-20 InletPart # 91031045-LQty x 1
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IMCA Approved 1978-88 GM Metric RH Brake Caliper, 7/16-20 InletPart # 91031045-RQty x 1
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Speedway Soft Street Brake Pads, GM Metric 1978-UPPart # 9193381Qty x 1
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Pinto Seal, 1.875 x 2.5 x .31Part # 912S18565Qty x 2
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Speedway and Metric Chassis, Tapered Inner Wheel BearingPart # 912TS6Qty x 2
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Outer Wheel Bearing Cup, TaperedPart # 912TLM11910Qty x 2
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Cone-Outer Whl BearingPart # 912TLM11949Qty x 2
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BRKT Only/Metric/Mustang II/ChevyPart # 91631950-1Qty x 2
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Bolt Kit Mustang II/Metric/ChevyPart # 91631950-2Qty x 1
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BRG & Seal ADPTR Pinto - ChevyPart # 91009300Qty x 2
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Spindle Nut Kit for Speedway 49-54 Chevy and 1953-82 GM SpindlesPart # 910616005Qty x 1
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Front Disc Brake Hardware KitPart # 9103141.1Qty x 1
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Reviews
Q & A
Videos & Articles
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We get a lot of questions about brake kits so Tim gives a brief overview of disc brake setups.
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Tim talks about the options we have for early Ford drum brakes.
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Learn 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.
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Learn MoreSpeedway Tech Zach R. talks about the dropped spindles and disc brake conversion he installed on his '55 Sedan Delivery.
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Learn MoreIn this Tech Tip, John confirms a customer question regarding the need for a proportioning valve on his ’55 F100 brake build.