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Street Race Truck More... The Toolbox
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$32.99
Mustang II Disc Brake Rotor, 5 on 4-1/2 Inch
Mustang II Disc Brake Rotor, 5 on 4-1/2 Inch

Mustang II Disc Brake Rotor, 5 on 4-1/2 Inch

74-80 Ford Pinto, 75-80 Mercury Bobcat, Front Position, Round Rotor Shape, Vented Rotor Type

26 Reviews | 13 Answered Questions
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Mustang II Disc Brake Rotor, 5 on 4-1/2 Inch
Mustang II Disc Brake Rotor, 5 on 4-1/2 Inch
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Part # 91031001
$32.99
each
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  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.

Details

Position:
Front
Rotor Shape:
Round
Rotor Diameter:
9.25 Inch
Rotor Type:
Vented
Rotor Style:
Plain Face
Rotor Material Type:
Steel
Rotor Finish:
Natural
Rotor Thickness:
0.88"
Bolt Pattern:
5 on 4.5"
Flange Diameter:
5.75"
Stud Length:
1.25"
Stud Diameter:
0.5"
Thread Pitch:
1/2"-20
Weight:
13.95 lbs.
MFG. Part #:
91031001
Sold in Quantity:
Each

Info

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). These five lug conversion brake rotors are new, not plugged or re-drilled. Has a 5 on 4-1/2" bolt pattern with corresponding 1/2" 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.

Be sure to install new bearings and seals (910-31000) with your new disc brake rotors.

Notes

Fits 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.
Some parts are not legal for use in California or other states with similar laws/regulations

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Videos & Articles
  • We get a lot of questions about brake kits so Tim gives a brief overview of disc brake setups.
  • If you're changing your brake pads before you hit your first race, it's important to burnish or bed-in your new pads. Check out our quick tech-tip on bedding brakes and how to minimize pad wear and get the best performance out of your brakes.
  • After getting the control arms and drop spindles installed last time, we are dying to see what it looks like on the ground. Today we are working with the Speedway Deluxe Disc Brake Kit. Josh and Joe are on a roll!

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