Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Disc Brake Rotors

Shop Classic Brakes At Speedway Motors

Speedway Motors is the #1 authority on disc brakes conversion kits. With the most experience in the Classic Pickup Truck business, you can be assured that you are getting a quality, excellent fitting kit. Insist on a Speedway front disc brake conversion kit for your classic truck. Don't forget to check out our huge selection of brake rotors, high volume master cylinders, proportioning valves and blocks. Stock up on all the essential brake lines, brake calipers, brake pads and fittings, too!

Featured Products
  • Wilwood 160-7105-BK SRP-BLK 32 Vane Iron Rotor, 12.19 Inch
    New
    Wilwood 160-7105-BK SRP-BLK 32 Vane Iron Rotor, 12.19 Inch
    (Part #8351607105BK)
    x
                SRP Drilled Performance Rotors feature a specially engineered directional cross drill and face slot pattern that improve brake response and pad performance throughout the entire range of light to heavy braking. The venting and cleaning action of the holes and slots will reduce pad glaze and disperse gasses and heat generated during the pad to rotor interface. The holes and slots also inhibit irregular pad compound build-up on the rotor faces resulting in smoother engagement and improved pedal response in all conditions. The material removed also contributes to lower rotating and unsprung suspension weight.
    • Premium grade, medium weight castings.
    • Suitable for moderate temperature racing to street use.
    • For ultimate durability in racing use comparable ULHP or GT rotors.
  • Speedway Pro-Lite Vented Brake Rotor, 11.75 x .81 Inch
    Speedway Pro-Lite Vented Brake Rotor, 11.75 x .81 Inch
    (Part #91031906)
    x
                

    Every rotor is cast from premium grade, long grain carbon iron which exhibits long wear, high thermal stability, and excellent resistance to distortion in high heat. Modern foundry and machining techniques hold close tolerances on face and vane thickness. Combining the correct face thickness with a 32 vane casting provides superior heat management and long service life with low rotating and unsprung weight. The straight vane design also makes it possible to use the same rotor on left or right hand mounting locations.

    • Thickness: GM .810"
    • Outside Diameter: 11.75"
    • # Holes: 8
    • Bolt Circle: 7"
    • Thread: Thru
    • Weight: 8.00 lbs

    Pro-Lite Rotor Application Chart (GIF)

  • Mustang II Disc Brake Rotor, 5 on 4-1/2 Inch
    Mustang II Disc Brake Rotor, 5 on 4-1/2 Inch
    (Part #91031001)
    x
                

    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.

    • 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.

  • Mustang II Disc Brake Rotor, 5 on 4-3/4 Inch
    Mustang II Disc Brake Rotor, 5 on 4-3/4 Inch
    (Part #91031002)
    x
                

    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.

    • 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.

  • Replacement 11-1/4 Inch Rear Brake Rotor
    Replacement 11-1/4 Inch Rear Brake Rotor
    (Part #91031039)
    x
                

    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"
  • Wilwood 160-0471 Ultralite 32 Vane Vented Iron Rotor, 11.75 x .810 In.
    Wilwood 160-0471 Ultralite 32 Vane Vented Iron Rotor, 11.75 x .810 In.
    (Part #8351600471)
    x
                

    Every Wilwood brake rotor is cast from premium grade, long grain carbon iron. This material exhibits long wear, high thermal stability, and excellent resistance to distortion in high heat. Modern foundry and machining techniques hold close tolerances on face and vane thickness. Combining the correct face thickness with a 32 vane casting provides superior heat management and long service life with low rotating and unsprung weight. The straight vane design also makes it possible to use the same rotor on left or right hand mounting locations.

    Ultralite Rotor Application Chart (GIF)

  • Wilwood 160-6925-BK SRP-BLK 32 Vane Iron Rotor, 12.19 Inch
    New
    Wilwood 160-6925-BK SRP-BLK 32 Vane Iron Rotor, 12.19 Inch
    (Part #8351606925BK)
    x
                SRP Drilled Performance Rotors feature a specially engineered directional cross drill and face slot pattern that improve brake response and pad performance throughout the entire range of light to heavy braking. The venting and cleaning action of the holes and slots will reduce pad glaze and disperse gasses and heat generated during the pad to rotor interface. The holes and slots also inhibit irregular pad compound build-up on the rotor faces resulting in smoother engagement and improved pedal response in all conditions. The material removed also contributes to lower rotating and unsprung suspension weight.
    • Premium grade, medium weight castings.
    • Suitable for moderate temperature racing to street use.
    • For ultimate durability in racing use comparable ULHP or GT rotors.
  • 11 Inch GM Brake Rotor with Ford Bolt Pattern
    11 Inch GM Brake Rotor with Ford Bolt Pattern
    (Part #91031067)
    x
                

    1973-1977 GM rotor redrilled to the 5 x 4-1/2" Ford bolt pattern. To be used with our #7024475 GM metric caliper adapter kit for disc brakes on a 1937-1948 Ford car spindle. Very common rotor to use as a conversion rotor. Has 1/2" fine wheel studs.

    NOT interchangable with rotor 91031066. If you have brackets and adapters designed for the Granada rotor, use part #91031066.

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  • Wilwood 160-8747 GT 48 Curved Vane Spec 37 Iron Rotor, 12.6 Inch
    New
    Wilwood 160-8747 GT 48 Curved Vane Spec 37 Iron Rotor, 12.6 Inch
    (Part #8351608747)
    x
                Wilwood's GT 48 Curved Vane Spec-37 rotors are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear. The formulation for this alloy is a derivative of technology and materials that were significant in the development of the extreme duty military spec rotors that are manufactured by Wilwood. Every Spec 37 rotor is precision machined to less than .001" run-out, flatness, and parallelism. Combined with our proven GT Series asymmetrical face slot pattern and individual dynamic balancing, you are assured the smoothest, vibration free performance at any speed. These rotors provide the highest cooling capacity and longest service life for extreme braking short tracks and road course competition.
    • Spec-37 Heavy wall Castings
    • Suitable for moderate temperature racing to street use.
  • Wilwood 160-12292 GT 36 Curved Vane Spec 37 Iron Rotor, 12.19 Inch
    New
    Wilwood 160-12292 GT 36 Curved Vane Spec 37 Iron Rotor, 12.19 Inch
    (Part #83516012292)
    x
                Wilwood's GT 36 Curved Vane Spec-37 rotors are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear. The formulation for this alloy is a derivative of technology and materials that were significant in the development of the extreme duty military spec rotors that are manufactured by Wilwood. Every Spec 37 rotor is precision machined to less than .001" run-out, flatness, and parallelism. Combined with our proven GT Series asymmetrical face slot pattern and individual dynamic balancing, you are assured the smoothest braking available.
    • Spec-37 Heavy wall Castings
    • Suitable for high temperature racing to street use.
  • Wilwood 160-11837-B GT 48 Curved Vane Spec 37 Iron Rotor, 11.75 Inch
    New
    Wilwood 160-11837-B GT 48 Curved Vane Spec 37 Iron Rotor, 11.75 Inch
    (Part #83516011837B)
    x
                Wilwood's GT 48 Curved Vane Spec-37 rotors are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear. The formulation for this alloy is a derivative of technology and materials that were significant in the development of the extreme duty military spec rotors that are manufactured by Wilwood. Every Spec 37 rotor is precision machined to less than .001" run-out, flatness, and parallelism. Combined with our proven GT Series asymmetrical face slot pattern and individual dynamic balancing, you are assured the smoothest, vibration free performance at any speed. These rotors provide the highest cooling capacity and longest service life for extreme braking short tracks and road course competition.
    • Spec-37 Heavy wall Castings
    • Suitable for high temperature racing to street use.
  • Wilwood 160-2979 GT 48 Curved Vane Spec 37 Iron Rotor, 12.72 Inch
    New
    Wilwood 160-2979 GT 48 Curved Vane Spec 37 Iron Rotor, 12.72 Inch
    (Part #8351602979)
    x
                Wilwood's GT 48 Curved Vane Spec-37 rotors are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear. The formulation for this alloy is a derivative of technology and materials that were significant in the development of the extreme duty military spec rotors that are manufactured by Wilwood. Every Spec 37 rotor is precision machined to less than .001" run-out, flatness, and parallelism. Combined with our proven GT Series asymmetrical face slot pattern and individual dynamic balancing, you are assured the smoothest, vibration free performance at any speed. These rotors provide the highest cooling capacity and longest service life for extreme braking short tracks and road course competition.
    • Spec-37 Heavy wall Castings
    • Suitable for moderate temperature racing to street use.
  • Ford F-150 11.75 Inch Brake Rotor
    Ford F-150 11.75 Inch Brake Rotor
    (Part #91031068)
    x
                5 x 5-1/2". This rotor was originally used on front of most Ford F-150 two wheel drive trucks from 1973 to approximately 1993. 11.75" diameter. 
            
  • Garage Sale - 1988-92 Camaro 1LE 12 Inch Brake Rotor
    Garage Sale
    Garage Sale - 1988-92 Camaro 1LE 12 Inch Brake Rotor
    (Part #UP51028)
    x
                

    These rotors are garage sale priced because they have been test fit and returned.

     No Warranty, No Returns On Garage Sale Items

    O.E. for '88-'92 Camaro with 1LE performance package. Has a 5 on 4-3/4" bolt pattern with 7/16" diameter wheel studs. Used as a conversion rotor for '58-'64 Chevy car brake kit 910-31918 for use with 2" drop spindles.

    Note: This rotor has 7/16" wheel studs, NOT the '88-'92 factory-style metric wheel studs.

  • Wilwood 160-7100 SRP 30 Vane Iron Rotor, 11 Inch
    New
    Wilwood 160-7100 SRP 30 Vane Iron Rotor, 11 Inch
    (Part #8351607100)
    x
                SRP Drilled Performance Rotors feature a specially engineered directional cross drill and face slot pattern that improve brake response and pad performance throughout the entire range of light to heavy braking. The venting and cleaning action of the holes and slots will reduce pad glaze and disperse gasses and heat generated during the pad to rotor interface. The holes and slots also inhibit irregular pad compound build-up on the rotor faces resulting in smoother engagement and improved pedal response in all conditions. The material removed also contributes to lower rotating and unsprung suspension weight.
    • Premium grade, medium weight castings.
    • Suitable for moderate temperature racing to street use.
    • For ultimate durability in racing use comparable ULHP or GT rotors.
  • Garage Sale - US Brake Left Curved 48 Vane Heavy Duty Rotor, 10.2 Lbs
    Garage Sale
    Garage Sale - US Brake Left Curved 48 Vane Heavy Duty Rotor, 10.2 Lbs
    (Part #AUP984)
    x
                

    U.S. Brake's disc brake rotors set the pace for design, quality and performance. Specially engineered materials, computer-enhanced design, and extensive lab and track testing have yielded a superior brake rotor. All U.S. Brake rotors have been optimized for strength, weight, and heat dissipation ability to meet the demands of the serious racer.

    • Premium grade alloy for superb thermal shock stability
    • Machined and blanchard ground to assure precise flatness
    • Precise vane placement for high volume cooling
    • Bolt Circle: 7"
    • Diameter: 11.75"
    • Mount: 8 x 5/16"
    • Weight: 10.2 lbs

    These rotors are garage sale priced because they are new old stock.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

     

  • Wilwood 160-11839-B GT 48 Curved Vane Spec 37 Iron Rotor, 12.19 Inch
    New
    Wilwood 160-11839-B GT 48 Curved Vane Spec 37 Iron Rotor, 12.19 Inch
    (Part #83516011839B)
    x
                Wilwood's GT 48 Curved Vane Spec-37 rotors are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear. The formulation for this alloy is a derivative of technology and materials that were significant in the development of the extreme duty military spec rotors that are manufactured by Wilwood. Every Spec 37 rotor is precision machined to less than .001" run-out, flatness, and parallelism. Combined with our proven GT Series asymmetrical face slot pattern and individual dynamic balancing, you are assured the smoothest, vibration free performance at any speed. These rotors provide the highest cooling capacity and longest service life for extreme braking short tracks and road course competition.
    • Spec-37 Heavy wall Castings
    • Suitable for high temperature racing to street use.
  • Garage Sale - Ford F-150 11.75 Inch Brake Rotor
    Garage Sale
    Garage Sale - Ford F-150 11.75 Inch Brake Rotor
    (Part #UP15097)
    x
                

    5 x 5-1/2". This rotor was originally used on front of most Ford F-150 two wheel drive trucks from 1973 to approximately 1993. 11.75" diameter.

     

    These rotors are garage sale priced because they have some slight shipping damage to one of the edges.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

     

  • Wilwood 160-7106-BK SRP-BLK 32 Vane Iron Rotor, 12.19 Inch
    New
    Wilwood 160-7106-BK SRP-BLK 32 Vane Iron Rotor, 12.19 Inch
    (Part #8351607106BK)
    x
                SRP Drilled Performance Rotors feature a specially engineered directional cross drill and face slot pattern that improve brake response and pad performance throughout the entire range of light to heavy braking. The venting and cleaning action of the holes and slots will reduce pad glaze and disperse gasses and heat generated during the pad to rotor interface. The holes and slots also inhibit irregular pad compound build-up on the rotor faces resulting in smoother engagement and improved pedal response in all conditions. The material removed also contributes to lower rotating and unsprung suspension weight.
    • Premium grade, medium weight castings.
    • Suitable for moderate temperature racing to street use.
    • For ultimate durability in racing use comparable ULHP or GT rotors.
  • Garage Sale - 1973-77 GM Midsize 11 Inch Brake Rotor
    Garage Sale
    Garage Sale - 1973-77 GM Midsize 11 Inch Brake Rotor
    (Part #UP20835)
    x
                

    This factory replacement 11" front disc brake rotor fits 1973-77 GM midsize chassis. Has a 5 on 4-3/4" bolt pattern. 

     

    This rotor is garage sale priced because it has been test fit and returned.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS


     

  • Wilwood 160-7745-BK SRP-BLK 48 Curved Vane Iron Rotor, 12.8 Inch
    New
    Wilwood 160-7745-BK SRP-BLK 48 Curved Vane Iron Rotor, 12.8 Inch
    (Part #8351607745BK)
    x
                SRP Drilled Performance Rotors feature a specially engineered directional cross drill and face slot pattern that improve brake response and pad performance throughout the entire range of light to heavy braking. The venting and cleaning action of the holes and slots will reduce pad glaze and disperse gasses and heat generated during the pad to rotor interface. The holes and slots also inhibit irregular pad compound build-up on the rotor faces resulting in smoother engagement and improved pedal response in all conditions. The material removed also contributes to lower rotating and unsprung suspension weight.
    • Premium grade, heavy wall castings.
    • Suitable for moderate temperature racing to street use.
    • For ultimate durability in racing use comparable HD or GT rotors.
  • Wilwood 160-12286 GT 36 Curved Vane Spec 37 Iron Rotor, 11.75 Inch
    New
    Wilwood 160-12286 GT 36 Curved Vane Spec 37 Iron Rotor, 11.75 Inch
    (Part #83516012286)
    x
                Wilwood's GT 36 Curved Vane Spec-37 rotors are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear. The formulation for this alloy is a derivative of technology and materials that were significant in the development of the extreme duty military spec rotors that are manufactured by Wilwood. Every Spec 37 rotor is precision machined to less than .001" run-out, flatness, and parallelism. Combined with our proven GT Series asymmetrical face slot pattern and individual dynamic balancing, you are assured the smoothest braking available.
    • Spec-37 Heavy wall Castings
    • Suitable for high temperature racing to street use.
  • Garage Sale - Ford F-150 11.75 Inch Brake Rotor
    Garage Sale
    Garage Sale - Ford F-150 11.75 Inch Brake Rotor
    (Part #UP42660)
    x
                

    This is garage sale priced because it has some minor damaged from shipping.

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

     

    5 x 5-1/2". This rotor was originally used on front of most Ford F-150 two wheel drive trucks from 1973 to approximately 1993. 11.75" diameter. 

    Item Details

    5 x 5-1/2" 

  • Garage Sale - 1979-1981 GM Midsize 10 1/2 Inch Disc Brake Rotors
    Garage Sale
    Garage Sale - 1979-1981 GM Midsize 10 1/2 Inch Disc Brake Rotors
    (Part #UP48404)
    x
                

    This rotor is garage sale priced because it has been test fit and returned.  This one does have some grease on the bearing races. 

     NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS 

    We stock those hard-to-find replacement brake rotors for your '79-'81 GM "midsize" cars (Malibu, Monte Carlo, El Camino, Cutlass, Century, Regal, etc.).

  • Wilwood 160-1949 UL 32 Vane Iron Rotor, 11.75 Inch
    New
    Wilwood 160-1949 UL 32 Vane Iron Rotor, 11.75 Inch
    (Part #8351601949)
    x
                Ultra-Light UL straight vane rotors provide high value performance and rugged durability for a wide range of competition, high performance, and sport driving applications. Don't confuse these rotors with bargain priced off-brand named parts. Wilwood's modern manufacturing capability, combined with large scale economy, make it possible to offer this level of quality and performance at such an affordable price.
    • Premium grade, medium weight castings.
    • Suitable for moderate temperature racing to street use.
  • Wilwood 160-2541 GT 48 Curved Vane Spec 37 Iron Rotor, 12.72 Inch
    New
    Wilwood 160-2541 GT 48 Curved Vane Spec 37 Iron Rotor, 12.72 Inch
    (Part #8351602541)
    x
                Wilwood's GT 48 Curved Vane Spec-37 rotors are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear. The formulation for this alloy is a derivative of technology and materials that were significant in the development of the extreme duty military spec rotors that are manufactured by Wilwood. Every Spec 37 rotor is precision machined to less than .001" run-out, flatness, and parallelism. Combined with our proven GT Series asymmetrical face slot pattern and individual dynamic balancing, you are assured the smoothest, vibration free performance at any speed. These rotors provide the highest cooling capacity and longest service life for extreme braking short tracks and road course competition.
    • Spec-37 Heavy wall Castings
    • Suitable for moderate temperature racing to street use.
  • Garage Sale - 1979-81 Camaro 11 Inch Rotor, 5 On 4-3/4
    Garage Sale
    Garage Sale - 1979-81 Camaro 11 Inch Rotor, 5 On 4-3/4
    (Part #UP25030)
    x
                

    We stock these hard-to-find replacement brake rotors for the 1979-1981 Camaro. Has the factory 5 on 4-3/4" bolt pattern. 

     

    This rotor is garage sale priced because it is different than what we currently offer. 

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS 

  • 1969-1972 GM Midsize 11 Inch Brake Rotor, 5 on 4 3/4 Inch
    1969-1972 GM Midsize 11 Inch Brake Rotor, 5 on 4 3/4 Inch
    (Part #91065390)
    x
                

    We stock those hard-to-find replacement brake rotors for your 1969-1972 GM midsize car. These rotors are specifically designed for the rigors of dirt track racing.  Drilled with a 5-on-4.75" bolt circle. Includes 7/16" fine quick-start wheel studs (installed).

    • 1969-1972 GM Midsize
    • 11 Inch Brake Rotor
    • 5 on 4-3/4 Inch
    • 7/16" fine studs installed
    • 11" diameter x 1"
    • IMCA Approved

    This rotor is designed for dirt track applications and should NOT be used for asphalt racing.

     

     

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