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Product Summary

Front Position, Round Rotor Shape, Vented Rotor Type

  • Brand new vented stock 9-1/4" rotors for use on '74-'80 Pinto or Bobcat and '74-'78 Mustang II spindles or Speedway kit for early Chevy spindles
  • Available for either 4-1/2" Ford/Mopar or 4-3/4" Chevy/ small GM bolt pattern with corresponding 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, pt# 910-31000 with your new disc brake rotors

Key Specs

PositionFront
Rotor ShapeRound
Rotor Diameter9.25 Inch
Rotor TypeVented
Rotor StylePlain Face

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Details

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.

Specifications

KEY SPECS
MFG. Part #91031001
BrandSpeedway Motors
PositionFront
Rotor ShapeRound
Rotor Diameter9.25 Inch
Rotor TypeVented
Rotor StylePlain Face
Rotor Material TypeSteel
GENERAL
Rotor FinishNatural
Rotor Thickness0.88"
Bolt Pattern5 on 4.5"
Flange Diameter5.75"
Stud Length1.25"
Stud Diameter0.5"
Thread Pitch1/2"-20
Weight13.95 lbs.
Sold in QuantityEach
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.