Product Summary

Front Position, Round Rotor Shape, Vented Rotor Type

  • Complete front rotor service kit for Mustang II disc brake applications
  • Includes two brake rotors with a 5 on 4-1/2-inch wheel bolt pattern
  • Bearing and seal kit provides components for both included rotors
  • Ideal for street rods, hot rods, kit cars, and custom chassis builds
  • Simplifies brake maintenance with matched replacement parts in one package

Comes as a Kit

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Key Specs

Rotor Diameter9.25 Inch
Rotor StylePlain Face
Rotor Material TypeSteel
Rotor Thickness0.88
Bolt Pattern5 on 4.5"
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Speedway Motors 91031010 Details

Refresh your Mustang II front disc brake setup with this convenient replacement kit that includes two 5 on 4-1/2-inch brake rotors and a complete bearing and seal kit for both rotors. Designed to simplify maintenance and repairs, this package provides the essential components needed to restore smooth wheel operation and dependable braking performance.

The included rotors feature the popular Ford 5 on 4-1/2-inch bolt pattern commonly used in street rods, hot rods, and custom chassis applications utilizing Mustang II-style front suspensions. Matching bearings and seals help ensure proper rotor installation, reduce friction, and promote long service life for reliable performance on the street or at the track.

  • Complete front rotor service kit for Mustang II disc brake applications
  • Includes two brake rotors with a 5 on 4-1/2-inch wheel bolt pattern
  • Bearing and seal kit provides components for both included rotors
  • Ideal for street rods, hot rods, kit cars, and custom chassis builds
  • Simplifies brake maintenance with matched replacement parts in one package

Speedway Motors 91031010 Specifications

KEY SPECS
MFG. Part #91031010
BrandSpeedway Motors
Rotor Diameter9.25 Inch
Rotor StylePlain Face
Rotor Material TypeSteel
Rotor Thickness0.88
Bolt Pattern5 on 4.5"
GENERAL
PositionFront
Rotor ShapeRound
Rotor TypeVented
Rotor FinishPlain
Flange Diameter5.75
Stud Length1.25
Stud Diameter0.5
Thread Pitch1/2"-20
Weight13.95
Sold in QuantityKit
NotesFits Mustang II/Pinto/Bobcat spindles. Use 912TLM12710 (outer cup) and 912TL68110 (inner cup), Hub flange is 5.740". OD of snout for wheel clearance is 2.50".Uses a .565 Knurl wheel stud.

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