Product Summary

GM 8.875 Inch 12-Bolt Car, Rear Position, Powder Coated

  • D154 Pro-Series rear disc kits provides a complete solution for popular muscle car rear axles that require a parking brake
  • Forged D154 dual piston calipers
  • One-piece drum/rotors, and high friction pads provide optimized and balanced braking for all types of custom performance street/strip and show machines
  • The neatly hidden internal shoe system provides a clean installation with superior static holding power for parking
  • D154 rear caliper kits offer a complimentary match to vehicles using Wilwood D52 or D154 calipers on OE spindles
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Key Specs

MFG. Part #140-12570
PositionRear
Wheel Bolt Pattern (in.)5x4.5 in. | 5x4.75 in.
Wheel Bolt Pattern (mm)5x114.3 mm | 5x120.65 mm
Rotor Diameter12.19 Inch
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Wilwood 140-12570 Details

  • D154 Pro-Series rear disc kits provides a complete solution for popular muscle car rear axles that require a parking brake
  • Forged D154 dual piston calipers, 12
  • 19” one-piece drum/rotors, and high friction pads provide optimized and balanced braking for all types of custom performance street/strip and show machines
  • The neatly hidden internal shoe system provides a clean installation with superior static holding power for parking
  • D154 rear caliper kits offer a complimentary match to vehicles using Wilwood D52 or D154 calipers on OE spindles
  • Optional caliper finishes and rotor designs enable the builder to personalize the style and optimize brake performance

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 140-12570 Specifications

KEY SPECS
MFG. Part #140-12570
BrandWilwood
PositionRear
Wheel Bolt Pattern (in.)5x4.5 in. | 5x4.75 in.
Wheel Bolt Pattern (mm)5x114.3 mm | 5x120.65 mm
Rotor Diameter12.19 Inch
Rotor TypeVented
Caliper PistonsTwo
Caliper FinishPowder Coated
Parking Brake ProvisionYes
Minimum Recommended Wheel Diameter16 Inch
Rotor ShapeRound
Hardware IncludedYes
Rotor StylePlain Face
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 4.5" | 4.75"
GENERAL
Sold in QuantityKit
GTIN Code889545016956
NotesDesigned for models with staggered shocks.
Rotor Thickness0.81"
Offset2.75"
Axle Flange Offset2.75"
Mount TypeFloating
Total Piston Area1.98 sq. in.
Piston TypeStainless
Pad Area8.7 sq. in.
Pad Volume2.9 cu. in.
Brake Pad CompoundBP-10
Caliper TypeFloating
Rotor FinishPlain
Rotor Material TypeIron
Vane Count32 Straight Vane
BeddedNo
BalancedNo
Brake Lines IncludedNo
Caliper ColorBlack
Caliper Material TypeForged Aluminum
Parking Brake StyleInternal Drum
Rear Caliper ColorBlack
Rear Caliper MaterialForged Billet Aluminum
Rear Caliper Piston QuantityTwo
Rear Rotor ConstructionVented
Rear Rotor Diameter12.19"
Rear Rotor StyleSolid surface
Rear Rotor Thickness0.81"

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