Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Mustang II Disc Brake Rotor, 5 on 4-1/2 Inch

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Specs
Material Type:
Steel
Weight:
13.95
Sold in Quantity:
Each
Finish:
Natural
Bolt Pattern:
5 on 4.5"
Stud Length:
1.25
Stud Diameter:
0.50
Thread Pitch:
1/2"-20
Flange Diameter:
5.75
Rotor Diameter:
9.25
MFG. Part #:
910-31001
Rotor Thickness:
0.88
Rotor Construction:
Vented
Garage Sale:
No
Rotor Location:
Front
Rotor Shape:
Round
Drilled:
No
Slotted:
No
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"
Mustang II Disc Brake Rotor, 5 on 4-1/2 InchMustang II Disc Brake Rotor, 5 on 4-1/2 Inch
Mustang II Disc Brake Rotor, 5 on 4-1/2 Inch

Click image to enlarge

Watch the video below to learn how to correctly measure your wheel bolt pattern.

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

Details

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What's in the Box

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 4-1/2" bolt pattern with corresponding 1/2" diameter fine thread wheel studs.

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

You may also be interested in:

Bearing & Seal Kit for Brake Kit 910-31955
                        Bearing & seal kit for GM Metric calipers & Mustang II rotors to 1949-54 Chevy spindle brake kit part 910-31955  &  910-31956. 

Kit Includes:

  • Seals
  • Tapered inner bearing
  • Tapered outer bearing cones
  • Tapered outer bearing cups
Wilwood 140-1013-B Drag Front Brake Kit for Mustang II
                        

Wilwood Forged Dynalite Front Drag Brake Kit offers a complete disc brake upgrade solution for Mustang II-equipped drag race application under 2800 lbs. Based on the venerable forged billet 4-piston Dynalite caliper, these versatile kits suit the braking requirements and style preferences for an off road drag racing application. 

Calipers mount directly to the spindle with a bolt-on aluminum bracket. Forged billet, five lug hubs with direct mount steel rotors combine to provide an average weight savings of over 30 pounds compared to stock disc brakes. Kits include all new hardware, wheel bearings, seals, brake pads, brackets, and extra length lug studs.

Aluminum hubs drilled to accept both 5-on-4-1/2" and 5-on-4-3/4" bolt patterns. 

  • Forged 4-piston Dynalite Calipers
  • 10.75" diameter solid steel rotors - black oxide finish
  • Wilwood BP-10 SmartPads - low noise, low dust
  • Lightweight clear anodized aluminum hubs

835-1401013 Instructions (PDF)

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.

Be sure to install new bearings and seals (910-31000) with your new disc brake rotors.
Gorilla Automotive LN41188 Chrome Acorn Lug Nut, 1/2 Inch Thread
                        
  • Chrome plated steel lug nut 
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  • Tapered 60° seat design
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Gorilla Automotive 41783 Wheel Installation Kit, 1/2 Inch
                        

Everything you need to install 4 wheels! Everything is prepackaged and clearly marked for easy use.  Gorilla's wheel installation kits contain the original Gorilla Wheel Locks, providing the very best in wheel security possible.

  • 1/2" thread size
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Kit includes:

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  • 4 wheel locks & key
Gorilla Automotive 71481N 1/2 Inch-20 Thread Acorn Wheel Locks, 60 Degree Taper
                        The original design that set the standard for wheel security, Gorilla Locks are the most advanced and unique locks on the market today.  An external "Security Pattern" makes the Gorilla Lock virtually impossible to remove without the matching key.  Made from case-hardened steel and chrome plated for lasting beauty, these locks are designed for unsurpassed security.  Each set of Gorilla Locks comes with a key code label, complete with ordering information for replacement keys.
  • 1/2"-20
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Gorilla Automotive 73681N 1/2 Inch-20 Thread Mag Wheel Locks, 3/4 Inch Shank
                        The original design that set the standard for wheel security, Gorilla Locks are the most advanced and unique locks on the market today.  An external "Security Pattern" makes the Gorilla Lock virtually impossible to remove without the matching key.  Made from case-hardened steel and chrome plated for lasting beauty, these locks are designed for unsurpassed security.  Each set of Gorilla Locks comes with a key code label, complete with ordering information for replacement keys.
  • 1/2" size
  • 3/4" shank
  • Closed end
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  • Includes centered round washers
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Gorilla Automotive 70087B 1/2 Inch-20 Open Rally Wheel Style Lug Nuts
                        Gorilla offers you the most complete selection of high-quality lug nuts   available on the market today!  These triple chrome plated wheel  lug  nuts feature long lasting durability and are precision engineered  to  meet or exceed manufacturer's specifications.
  • Short OEM style
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  • 1/2"-20
  • 60º taper seat - NON Bulge
  • 13/16" Hex size
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Gorilla Automotive 73087B 1/2 Inch-20 Open Mag Wheel Lug Nuts, 3/4 Inch Shank
                        Gorilla offers you the most complete selection of high-quality lug nuts  available on the market today!  These triple chrome plated mag wheel lug  nuts feature long lasting durability and are precision engineered to  meet or exceed manufacturer's specifications.
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Gorilla Automotive 73187B 1/2 Inch-20 Standard Mag Wheel Lug Nuts, 3/4 Inch Shank
                        Gorilla offers you the most complete selection of high-quality lug nuts   available on the market today!  These triple chrome plated mag wheel  lug  nuts feature long lasting durability and are precision engineered  to  meet or exceed manufacturer's specifications.
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  • 3/4" shank
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  • Package of 4
Wheel Dust Caps, Plain, 1.786 Hub I.D.
                        

These hub dust caps are replacements for your old, beat-up caps. Made of stamped steel with a zinc plated finish.

Wheel Dust Caps, Chrome, 1.786 Hub I.D.
                        

These chrome wheel dust caps are replacements for your old, beat-up caps. Made of stamped steel with a chrome plated finish.

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.

If your project willl be making use of used rotors, you will require new bearing races or cups.  Therefore you will need to purchase the bearing and seal kit # 910-31052 suggested below in place of kit # 910-31000.

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.

-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"

Never install new hubs with old bearings.