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#91031001
Mustang II Disc Brake Rotor, 5 on 4-1/2 Inch
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- 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
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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
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Key Specs
| Position | Front |
| Rotor Shape | Round |
| Rotor Diameter | 9.25 Inch |
| Rotor Type | Vented |
| Rotor Style | Plain Face |
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Speedway Motors 91031001 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.
Speedway Motors 91031001 Specifications
Speedway Motors 91031001 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 91031001 |
| Brand | Speedway Motors |
| Position | Front |
| Rotor Shape | Round |
| Rotor Diameter | 9.25 Inch |
| Rotor Type | Vented |
| Rotor Style | Plain Face |
| Rotor Material Type | Steel |
| GENERAL | |
| 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. |
| Sold in Quantity | Each |
| 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. |