Product Summary

Front Position, Round Rotor Shape, Vented Rotor Type

  • 5x4-3/4 bolt pattern
  • 9-1/4" diameter discs
  • Will for '74-'80 Mustang II, Pinto, or Bobcat spindles
  • Kit includes bearing seals and brake rotors

Comes as a Kit

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Key Specs

Rotor Diameter9.25 Inch
Rotor StylePlain Face
Rotor Material TypeCarbon Iron
Rotor Thickness0.88"
Bolt Pattern5 on 4.75"
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Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 91603056 Details

Years of hot rodding can take its toll on your favorite build. We know that eventually wear parts get worn down, take a beating, and need to be replaced. A simple solution to replace your worn out rotors and bearings for your Mustang II style front suspension system. Save time and money with Speedway Motors today!

Kit Includes:

  • (2) Speedway Motors Mustang II Disc Brake Rotor, 5 on 4-3/4 Inch
  • (1) Speedway Bearing-Seal Kit for Two Mustang II Brake Rotors

Speedway Motors Mustang II Disc Brake Rotor, 5 on 4-3/4 Inch

Vented stock 9-1/4" diameter brake rotors for 1974-1980 Mustang II, Pinto, or Bobcat spindles (or Speedway brake kits using '49-'54 Chevy spindles). Brake rotors are new, not plugged or re-drilled. Has a 5 on 4-3/4" bolt pattern with corresponding 7/16" diameter fine thread wheel studs.

  • Outside Diameter of rotor disc - 9.256"
  • Thickness of vented disc - .884"
  • I.D. of back side of rotor - 6.256"
  • Rear rotor face to bearing hub - .290"
  • Outer hub diameter where wheel will mount - 5.834"
  • Outer hub height - 1.450"
  • Bearing snout is 1.60" tall, 2.55" diameter at bottom and 2.384" at outer end
  • Position: Front
  • Rotor Shape: Round
  • Rotor Diameter: 9.25 Inch
  • Rotor Type: Vented
  • Rotor Style: Plain Face
  • Rotor Material Type: Cast Iron
  • Rotor Finish: Natural
  • Rotor Thickness: 0.88"
  • Bolt Pattern: 5 on 4.75"
  • Flange Diameter: 5.74"
  • Stud Length: 0.93"
  • Stud Diameter: 0.44"
  • Thread Pitch: 7/16"-20

Speedway Bearing-Seal Kit for Two Mustang II Brake Rotors

This bearing and seal kit includes two inner wheel bearings, two outer wheel bearings, and two inner grease seals. This kit is enough for two brake rotors and is intended to be used with a new rotor installation as this kit does not include the bearing races or cups.

Works with Mustang II/Pinto and Granada rotors using Mustang II/Pinto spindles only. It will not work for installing Mustang II/Pinto brake rotors on 1949-1954 Chevy spindles. Not for use with early Chevy spindle brake conversion kits.

  • Includes
    • (2) inner wheel bearings
    • (2) outer wheel bearings
    • (2) inner grease seals
  • -Large Bearing-
    • Thickness: .656"
    • Upper OD: 1.900"
    • Lower OD: 2.150"
    • Bearing ID: 1.375"
  • -Small Bearing-
    • Thickness: .651"
    • Upper OD: 1.380"
    • Lower OD: 1.570"
    • Bearing ID: 0.864"

Speedway Motors 91603056 Specifications

KEY SPECS
MFG. Part #91603056
BrandSpeedway Motors
Rotor Diameter9.25 Inch
Rotor StylePlain Face
Rotor Material TypeCarbon Iron
Rotor Thickness0.88"
Bolt Pattern5 on 4.75"
GENERAL
PositionFront
Rotor ShapeRound
Rotor TypeVented
Rotor FinishPlain
Flange Diameter5.74"
Stud Length0.93"
Stud Diameter0.44"
Thread Pitch7/16"-20
Sold in QuantityKit

Ratings & Reviews

5

10 Reviews

Overall Assessment

Customers consistently praise the product for its excellent quality and perfect fit, acknowledging its superior price-value ratio. With its guaranteed functionality and high-grade materials, it performs flawlessly. Buyers have also commended its fast delivery. More than these, customers unequivocally recommend it over competition for its exceptional features and usability.

5

10 reviews

5

10

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Perfect fit

5.0

2 months ago

Waylen

Los Angeles

Verified

They fit perfectly are very good quality and machine very nicely. Glad I found them here.

Would Recommend

YES

5.0

a year ago

NRG

DETROIT LAKES MN

Verified

ALL THE PARTS IN THE KIT WERE THERE & THEY ALL LOOKED GREAT

Would Recommend

Great product

5.0

a year ago

CB

Virginia

Verified

Great kit, everything fit properly.

Would Recommend

Nice kit

5.0

a year ago

CB

Virginia

Verified

Fit oe spindles correctly, no complaints

Would Recommend

Yes

5.0

a year ago

Zioty

Indianapolis, IN

Verified

Upgrading the front suspension of my '41 Chevy.

Would Recommend

Great product

5.0

2 years ago

38 Chevy

Middletown ny

Verified

Great product for the price and customer service was a big help with what I needed.

Would Recommend

I would buy this again

5.0

2 years ago

Nico

Youngstown, Ohio

The product arrived on time and was perfect. I would order from this company again.

Would Recommend

i would if i ever get into another one

5.0

2 years ago

big ben

ontario canada

Verified

every thing fit the way i expected yo

Would Recommend

Worked perfectly

5.0

4 years ago

The Lone Ranger

Sauk Centre, Mn

Verified

Perfect fit. Great price and delivery.

Would Recommend

Product was of excellent quality

5.0

6 years ago

Ricardo

Texas

Verified

Excellent price and quality along with fast delivery

Would Recommend

Showing 10 of 10 reviews

Questions & Answers

1 Question • 1 Answer

Do you have the part number or specs for the wheel studs in this rotor? I need the 5x4.75 bolt pattern but would like to run 1/2" studs to match my rear axle studs.

by The Kid

• 2 years ago

1 answer

1 of 1 questions shown

Fitment

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