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#91031068
Ford F-150 11.75 Inch Brake Rotor
- Originally used on 1973 to 1993 Ford F-150 this rotor works well to retrofit on to 1937 to 1948 Ford spindles
- When used with basic brake kit 91631909 and bearing and seal kit 91031069 this easily converts early Ford spindles to disc brakes
- 5 on 5-1/2" bolt pattern allows the use of early Ford wire wheels
$86.99
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Product Summary
Front Position, Round Rotor Shape, Vented Rotor Type
- Originally used on 1973 to 1993 Ford F-150 this rotor works well to retrofit on to 1937 to 1948 Ford spindles
- When used with basic brake kit 91631909 and bearing and seal kit 91031069 this easily converts early Ford spindles to disc brakes
- 5 on 5-1/2" bolt pattern allows the use of early Ford wire wheels
- Premium cast iron vented rotor construction dissipates heat to reduce or eliminate brake fade
- 1/2"-20 thread wheel studs come installed in this rotor to make installation quick and easy
Key Specs
| Rotor Diameter | 11.75 Inch |
| Rotor Style | Plain Face |
| Rotor Material Type | Cast Iron |
| Rotor Thickness | 1.2" |
| Bolt Pattern | 5 on 5.5" |
Need To Know
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Speedway Motors 91031068 Details
- Originally used on 1973 to 1993 Ford F-150 this rotor works well to retrofit on to 1937 to 1948 Ford spindles
- When used with basic brake kit 91631909 and bearing and seal kit 91031069 this easily converts early Ford spindles to disc brakes
- 5 on 5-1/2" bolt pattern allows the use of early Ford wire wheels
- Premium cast iron vented rotor construction dissipates heat to reduce or eliminate brake fade
- 1/2"-20 thread wheel studs come installed in this rotor to make installation quick and easy
Speedway Motors 91031068 Specifications
Speedway Motors 91031068 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 91031068 |
| Brand | Speedway Motors |
| Rotor Diameter | 11.75 Inch |
| Rotor Style | Plain Face |
| Rotor Material Type | Cast Iron |
| Rotor Thickness | 1.2" |
| Bolt Pattern | 5 on 5.5" |
| GENERAL | |
| Position | Front |
| Rotor Shape | Round |
| Rotor Type | Vented |
| Rotor Finish | Plain |
| Flange Diameter | 2.01" |
| Stud Length | 1.05" |
| Stud Diameter | 0.5" |
| Thread Pitch | 1/2"-20 |
| Weight | 27.7 lbs. |
| Sold in Quantity | Each |
| Notes | Originally used on front of most Ford F-150 2WD from '73 to approx. '93 (Aimco 5456, Bendix 141067). Accepts grease cap Motormite/Help # 13973 or Dorman # 616-503. |
Ratings & Reviews
3.6
8 Reviews
Customers praised the product’s quality and practicality, especially in complex car projects. Despite a few minor modifications, one customer remarked that it was the easiest thing they've done. Positive notes were also made about its application in a 1958 Ford F100 upgrade, with the parts fitting easily and detailed guidance provided for a proper fit. However, some difficulties were reported with the rotor installation and seal pocket chamfering, requiring a bit of extra work. The majority of customers recommend the product, advising that some additional adjustments to the seal pocket can enhance the installation process. The product stands out for its solid material quality and usability.
Ratings & Reviews
3.6
8 Reviews
Customers praised the product’s quality and practicality, especially in complex car projects. Despite a few minor modifications, one customer remarked that it was the easiest thing they've done. Positive notes were also made about its application in a 1958 Ford F100 upgrade, with the parts fitting easily and detailed guidance provided for a proper fit. However, some difficulties were reported with the rotor installation and seal pocket chamfering, requiring a bit of extra work. The majority of customers recommend the product, advising that some additional adjustments to the seal pocket can enhance the installation process. The product stands out for its solid material quality and usability.
3.6
8 reviews
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Filter by Ratings
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5.0
3 years ago
Rat rod fred
Phoenixville pa
Verified
Best source
Would Recommend
I received the product, have not installed yet.
5.0
4 years ago
Tip49
Alberta Canada
Verified
Although some modifications are required to fit my project, I am pleased eith the quality.
Would Recommend
Great upgrade
5.0
7 years ago
Dave
Omaha, NE
Verified
1958 Ford F100 front conversion. Parts went on easily and explanation of what needed to be done for proper fit was spot on.
Would Recommend
Best
5.0
9 years ago
Duck
Kentucky
Verified
The best and Easiest thing I've done
Would Recommend
MEH!
3.0
10 years ago
big D from the 'couve'
Vancouver wa
Verified
another reviewer mentioned the lack of a chamfer on the seal pocket, i experienced the same issue. of the two rotors, one seal installation went without problem, however the second rotor has a very sharp edge with burrs that caught the seal and cut it so that now i need to make a trip to the parts house to buy a new one. over the last 45yrs i've installed more than my share of seals, now i will follow the other reviewers lead and use a grinder. i will still recommend this kit IF the seal pocket is ''worked'' some.
Would Recommend
Just 1 heads up
3.0
11 years ago
DT36
Missouri, USA
Verified
The rotor-hub fit onto the spindle after changing the outer race as instructed. The only problem I had was having to machine the step pilot on the front of the hub to allow my Cragar SS's to seat onto the face surface. Just glad I checked that before I got everything assembled first, liked about 0.150" going on all the way. Had to remove all the studs and mount onto lathe in order to turn this step down.
Would Recommend
Instructions would be great!
2.0
11 years ago
RatTruck
Spokane, WA, USA
Verified
Why is it hat the rotors come with the outer bearing races already installed that are the wrong ones but there is no instructions saying they need to be replaced with the extra set sent with the kit? A little heads up would have been great!
Would Recommend
This product needs to be seriously looke
1.0
12 years ago
12string
Mansfield Ohio
Verified
First off the rotor needs a lot of work to be useable. The instructions tell you to remove the outside bearing race, not a problem if you have a decent rotor to work with. There are no notches in the ID to either use a punch or use a press, so you either use an end mill to cut notches in the rotor or try and drill the bearing race...good luck. Next you are required to press in the inner bearing seal, usually not a problem, IF you have a properly machined rotor, which you don't have. The ID of the seal pocket is supposed to have a chamfer on the ID to assist in starting the seal guess what no chamfer only a sharp edge, do yourself a favor and take a die grinder and put one on the ID ...seal will start and seat with no problem Hope this helps. I used to machine these same rotors in the mid 1990's and have been a mechanic for 50 years so I know what I'm talking about.
Would Not Recommend
Showing 8 of 8 reviews
Questions & Answers
Questions & Answers
4 Questions • 4 Answers
Trying to get these adapters #91028354 to fit on these. Do you know how wide in diameter the center step is? Thanks.
by William
• 8 years ago
1 answer
View Answer
I have a 1979 F100 2 wheel drive. 5x5.5 bolt pattern hard time finding wheels with the big hub on the stock rotors. I see a step down on the hub on this rotor, what are the two dimensions. Thanks
by Dave
• 11 years ago
1 answer
View Answer
Can I get this rotor in a 5x4.5 bolt pattern. I bought your kit 910-31909 with 5x5.5 and decide to use different wheels that has the 5x4.5 bolt pattern
by Hunt2020
• 12 years ago
1 answer
View Answer
do these rotors come with the bearings? will the ones off the drums on my truck fit?
by
• 14 years ago
1 answer
View Answer
4 of 4 questions shown
Fitment
Fitment
1975-1993 Ford F-150