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$52.99
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor

Speedway Replacement 11-1/4 Inch Rear Brake Rotor

Universal Fit, Rear Position, Round Rotor Shape, 11.25 Inch Rotor Diameter, Vented Rotor Type

12 Reviews | 9 Answered Questions
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Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
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Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
Speedway Replacement 11-1/4 Inch Rear Brake Rotor
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Part # 91031039
$52.99
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  • Premium cast iron vented rotor design reduces brake fade and extends service life
  • These 11-1/4" rotors feature dual wheel bolt patterns to fit 5 on 4-1/2" and 5 on 4-3/4" axles
  • These are compatible with axle flange diameters of 6-1/4" or smaller
  • Center hole size is 2.78" ID but you can machine it larger to suit your needs
  • 2.30" backspace works well with several bolt on rear brake brackets

Details

Position:
Rear
Rotor Shape:
Round
Rotor Diameter:
11.25 Inch
Rotor Type:
Vented
Rotor Style:
Plain Face
Rotor Material Type:
Cast Iron
Rotor Finish:
Natural
Rotor Thickness:
1"
Bolt Pattern:
Dual: 5 on 4.5" | 4.75"
Backspace:
2.3"
Inside Diameter:
2.78"
Flange Diameter:
6.25"
MFG. Part #:
91031039
Sold in Quantity:
Each
Notes:
Thickness at Center of Rotor: 0.236"

Info

These 11-1/4" one-piece, vented iron disc brake rotors are for rear disc brake applications. Features dual bolt patterns for 5 x 4.5" (Ford/Mopar) and 5 x 4.75" (Chevy/GM) wheels. 

  • Center Hole:  2.78"
  • Backspace:  2.30"
  • Maximum Axle Flange Diameter:  6-1/4"
  • Thickness:  1"
  • Thickness @ Center of Rotor:  0.236"

Notes

Installation note:

The inside diameter of this rotor will accept an axle flange that has a diameter of 6-1/4" or smaller.  If your axle flange exceeds 6-1/4" in diameter, you will need machine your axle flange to decrease your axle flange diameter to fit this rotor as necessary.

When utilizing an aftermarket axle with disc brake conversion kits, it may be necessary to reduce the diameter of the axle flange to a diameter necessary to adequately fit inside the required Clearance I.D. that the brake hat/brake rotor will require.  (see above diagram for illustration)

Important Messages:

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

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