Product Summary

Rear Position, 11.44 Inch Rotor Diameter, Anodized

  • Wilwood's new Billet Dynapro Lug-Drive Dynamic Stainless Super Alloy Rotor Brake Kits are especially beneficial to cars that rely heavily on the rear brakes for stopping and any other high speed, heavy weight cars that generate above average rear brake heat
  • The lug-drive rotor mounting system eliminates the rotor bolts and instead, a large single internal snap-ring retains the rotor in the hat, making assembly and installation literally a snap
  • This system allows the rotors to move independently of the hats as they expand and contract through heat cycles
  • All thermally generated stress is removed from the rotor attachment points
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Key Specs

MFG. Part #140-12550-D
PositionRear
Rotor Diameter11.44 Inch
Rotor TypeSolid
Caliper PistonsFour
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Wilwood 140-12550-D Details

  • Wilwood's new Billet Dynapro Lug-Drive Dynamic Stainless Super Alloy Rotor Brake Kits are especially beneficial to cars that rely heavily on the rear brakes for stopping and any other high speed, heavy weight cars that generate above average rear brake heat
  • The lug-drive rotor mounting system eliminates the rotor bolts and instead, a large single internal snap-ring retains the rotor in the hat, making assembly and installation literally a snap
  • This system allows the rotors to move independently of the hats as they expand and contract through heat cycles
  • All thermally generated stress is removed from the rotor attachment points
  • The rotors stay flatter and run truer
  • Kits are available in two rotor diameters: A traditional 11
  • 44” diameter and a smaller 11
  • 25” diameter for clearance with bead lock rims
  • The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors
  • Spring-loaded, replaceable stainless steel inserts in each lug-drive slot protect the aluminum hat from wear that would otherwise be caused by loading of the stainless steel rotor against the hat when brake torque is applied
  • Kits are available in Single and Dual caliper configurations

Specs

Our rotors are machined and fully e-coated, just like the rotor hats. This is a protectant coating the prohibits surface rust from forming on the exposed surfaces. Once the parts are installed and being bedded in, the brake pad friction and caliper pressure will remove the coating at the spot the brake pads touch. This will expose the silver iron material underneath.

Wilwood 140-12550-D Specifications

KEY SPECS
MFG. Part #140-12550-D
BrandWilwood
PositionRear
Rotor Diameter11.44 Inch
Rotor TypeSolid
Caliper PistonsFour
Caliper FinishAnodized
Parking Brake ProvisionNo
Minimum Recommended Wheel Diameter15 Inch
Rotor ShapeRound
Hardware IncludedYes
Rotor StyleDrilled
Front Rotor IncludedNo
Front Caliper IncludedNo
Rear Caliper IncludedYes
Front Spindles IncludedNo
Master Cylinder IncludedNo
Brake Booster IncludedNo
Brake Hoses IncludedNo
Rear Rotor IncludedYes
ColorBlack
Bolt Pattern5 on 4.75" | 5"
GENERAL
Sold in QuantityKit
GTIN Code889545016796
Rotor Thickness0.35"
Offset2.81"
Axle Flange Offset2.81"
Mount TypeLug
Total Piston Area4.80 sq. in.
Piston TypeStainless
Pad Area6.36 sq. in.
Pad Volume2.10 cu. in.
Brake Pad CompoundComposite Metallic
Caliper TypeLug
Rotor FinishPlain
Rotor Material TypeSuper Alloy
Vane CountNone
BeddedNo
BalancedNo
Hat TypeDynamic Drag Hat - Lug Drive
Hat FinishBlack E-Coat
Hat Material TypeAluminum
Hat Offset Dimension1.96"
Brake Lines IncludedNo
Caliper ColorGray
Caliper Material TypeForged Aluminum
Rear Caliper ColorBlack
Rear Caliper MaterialForged Billet Aluminum
Rear Caliper Piston QuantityFour
Rear Rotor ConstructionSolid
Rear Rotor Diameter11.44"
Rear Rotor StyleCross-drilled surface
Rear Rotor Thickness0.35"
Hat Bolt Circle 15 x 5.00
Hat Bolt Circle 25 x 4.75

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