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Speedway Cast Iron Drilled Scalloped Brake Rotor, 11.75 x .810 Inch

Specs
Sold in Quantity:
Each
Finish:
Natural
Rotor Construction:
Solid
Rotor Diameter:
11.75
Rotor Hat Bolt Pattern:
8 x 7.00"
Material Type:
Cast Iron
Rotor Location:
Rear
Rotor Shape:
Scalloped
MFG. Part #:
940-31068
Drilled:
Yes
Slotted:
No
Rotor Thickness:
0.81
Weight:
5.07
Speedway Cast Iron Drilled Scalloped Brake Rotor, 11.75 x .810 Inch

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Details

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What's in the Box

Info

These scalloped iron brake rotors provide effective lightweight options for sprints, late models, modifieds, and other competition applications that race in low to medium temperature ranges. Steel rotors are typically found in lighter weight open wheel cars such as sprints and modifieds.  Speedways premium 11.75" x .810" drilled scalloped brake rotor weighs only 5.07 lbs.

  • Scallop configuration provides greatest weight reduction on a vented straight vane iron rotor
  • Scallop machining removes as much as three pounds, or nearly 33% of the rotor mass
  • Vented castings provide increased cooling capacity over machined steel plate rotors
  • Improved structural durability over drilled rotor designs
  • Vented iron 
  • Inboard mounted (Sprints)

Note: Suitable for Light Dirt Racing applications. Scalloped Rotors are unsafe for street use.


Item Details

.810 x 11.75
8 x 7" B.C.

Notes

Proper Break-In Procedure for Steel or Cast Iron Rotors

New steel/iron rotors should be bedded in before being used in racing conditions. Proper bedding will prepare the rotor surface, prolong the rotor's life, and make it more resistant to thermal checking or cracking under severe braking conditions. The following procedures should be performed when bedding in both steel and cast iron rotors. It is best to bed in a new rotor using a used set of pads, preferably ones which will not create heat rapidly. Generating heat too rapidly will thermal shock the rotors. Likewise, when bedding in a new set of brake pads it is best to perform the process on a used rotor. This new/used bedding process permits controlled bedding of each individual component.

Make sure rotor surfaces are free from oils, grease, and brake fluid. Run vehicle up to a moderate speed and make several medium deceleration stops to heat up the rotor slowly. This will help reduce the chance of thermal shock caused by uneven heating of the rotor. Pull into the pits and allow the rotor to cool to ambient air temperature. Care should be taken not to ride the brakes into the pits as this may hot spot the rotor causing premature wear to the surface or structural damage. 

Specs

  • Thickness: 0.81"
  • O.D.: 11.75"
  • Bolt Circle: 8 x 7"
  • Threads:  Thru
  • Weight: 5.07 lbs
  • Face: drilled & scalloped

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