Stamped Steel Disc Brake Rotor Hat, 3 Inch Offset, Black
Stamped Steel Disc Brake Rotor Hat, 3 Inch Offset, Black
Speedway Motors

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#91031904

Stamped Steel Disc Brake Rotor Hat, 3 Inch Offset, Black

  • Spun steel hat with 5 on 4-1/2", 5 on 4-3/4", and 5 on 5" bolt circle patterns
  • Rotor bolt pattern is 8 on 7" bolt circle, with 1/2" ID holes
  • 3.00" hat offset with 3.06" diameter of center hole
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$38.99

/each

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Product Summary

Universal Fit, 3.00" Offset, 7.60" Outside Diameter

  • Spun steel hat with 5 on 4-1/2", 5 on 4-3/4", and 5 on 5" bolt circle patterns
  • Rotor bolt pattern is 8 on 7" bolt circle, with 1/2" ID holes
  • 3.00" hat offset with 3.06" diameter of center hole
  • Weighs just 2 lbs. with 5.83" I.D. clearance
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Key Specs

MFG. Part #91031904
Outside Diameter7.60"
Inside Diameter3.05"
Overall Thickness.09"
Bolt PatternMulti: 5 on 5" | 4.75" | 4.50"
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Speedway Motors 91031904 Details

Stamped steel hat with all three bolt patterns: 5 on 4-1/2", 5 on 4-3/4", and 5 on 5" bolt circle patterns. Weighs just 2 lbs. and is IMCA approved.

  • Rotor Bolt Circle:  7" x 8 holes
  • 3.00" offset
  • 3.05" diameter center hole
  • 5.83" I.D. clearance
  • Stud Hole Diameter: 1/2"
  • Rotor Mount Bolt Hole: .325"

Note: Failure to follow the installtion instructions will result in damage to the brake hat and will result in excess run out of the rotor.

Charts

Speedway Motors 91031904 Specifications

KEY SPECS
MFG. Part #91031904
BrandSpeedway Motors
Outside Diameter7.60"
Inside Diameter3.05"
Overall Thickness.09"
Bolt PatternMulti: 5 on 5" | 4.75" | 4.50"
Rotor Hat Bolt Pattern8 x 7.00"
Material TypeSteel
FinishPainted
GENERAL
Offset3.00"
Sold in QuantityEach
NotesClearance ID 5.83"

Ratings & Reviews

4.1

13 Reviews

Overall Assessment

Customers appreciate the rotor gate for its reliable functionality and ease of installation. The wheel stud sets are lauded for fitting 5/8" and 1/2" studs perfectly, and the bolt patterns listed are confirmed to fit accurately. Despite some concerns about the brake mounting "top hats" and their flimsiness, customers admire the cost effectiveness and lightweight nature. Some customer modifications were required for currie cut-to-fit axles, with minor drilling needed for larger studs. Despite these slight setbacks, the rotor hats gained commendation for their great fit and performance at a reasonable price.

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4.1

13 reviews

5

6

4

5

3

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2

1

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Most Liked Positive Review

4.0

Works good

If you are using the currie cut to fit axle for the Ford 9 inch you will have to remove a little metal from the outer circumference of the axle flange. I did this in seconds on a belt sander. If you are using 5/8 wheel studs you will need to drill holes larger. This makes sense as anyone using larger studs can drill hole larger but those using smaller studs can not make hole smaller.

Most Liked Negative Review

2.0

Least expense for brakes

The hats work ok but are flimsy and don't take a lot to bend them and then they push your calipers back and you get low brake pedal and have to pump up

Filter by Ratings

Yes I would buy this part again

5.0

3 years ago

Sabookie

San Bernardino CA

Verified

The rotor gate worked great had no issues with them

Would Recommend

Great product

5.0

5 years ago

Jake

Black Diamond, Alberta, Canada

Verified

I purchased so I have a set for 5/8" and 1/2" wheel studs

Would Recommend

Ok

5.0

7 years ago

Ray

Lake havasu

Verified

Ok part

Not recommended

1.0

8 years ago

Ex Britt

Buffalo NY

Verified

I would not recommend this product. Two sets of bake mounting "top hats" has excessive raidial runout, and were so far out of true the brake pads would bind against the rotor!

Would Not Recommend

Least expense for brakes

2.0

9 years ago

Ac

Elkton Va

Verified

The hats work ok but are flimsy and don't take a lot to bend them and then they push your calipers back and you get low brake pedal and have to pump up

Would Not Recommend

Steel hat

5.0

9 years ago

Al

High Point NC

Verified

Good looking piece, very cost effective, light weight. If you need a hat you can't go wrong with what you get for the price.

Would Recommend

perfect jig/fixture Great idea I had,finally

5.0

10 years ago

kenentech

Benicia,CA.

Verified

I used this product as a fixture to layout a chevy wheel lug pattern on my '57 Pontiac axle- it worked better than I imagined!

Would Recommend

fits as asdvertised

4.0

10 years ago

Curt

Winchester, Tn

Verified

Fits all the bolt patterns listed.

Would Recommend

AS described

5.0

10 years ago

jimmy

tulsa

Verified

easy to install

great value -

4.0

13 years ago

builtinabarn

Amherstburg, ON, Canada

easy to install no clearance issues no alignment issues three bolt patterns -

Would Recommend

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Showing 10 of 13 reviews

Questions & Answers

4 Questions • 5 Answers

will this fit a 77 camaro?

by Logan

• 8 years ago

2 answers

View Answers

Could you use this on a drag car ? I have a Ford bolt pattern rotor on my car now and I'm wanting to switch to a Chevy pattern and was thinking this would be a easy way to do it , and just buy the bolt on rotors if I can match the proper offset .

by Corey

• 9 years ago

1 answer

View Answer

Do you have this in a 2.5 off set,7/16 stud holes?

by Steve, technician

• 10 years ago

1 answer

View Answer

do you have these with the 5 on 5 1/2 bolt pattern

by 9ford

• 13 years ago

1 answer

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