Wilwood 140-10943-D AERO4 Radial 14in. Black Rear Parking Brake Kit, GM 12-Bolt

Vehicle Fitment

• Universal fit for vehicles using the GM 12-bolt rear axle - a common rear end in classic Chevrolet and GM muscle cars and trucks

Fitment Notes

• Confirm your rear axle matches the GM 12-bolt housing before ordering, since this kit is engineered specifically for that axle flange rather than a broader range
• Designed to complement a front big brake upgrade for balanced braking performance front to rear
• Includes an internal parking brake shoe system, making it a genuine parking brake replacement rather than requiring a separate solution
• Uses a two-piece rotor and hat design rather than a one-piece integral disc/drum, differing from Wilwood's Dynalite or Dynapro FDLI-style rear kits
• Rear kit only - pair with a compatible Wilwood front kit for a complete brake system upgrade

Features

• Billet AERO4 radial-mount four-piston calipers deliver the ultimate big-brake solution for muscle car rear axles needing a parking brake
• Black powder-coat caliper finish for a clean, understated performance look
• 14 in. two-piece rotors provide serious stopping power to match aggressive front big brake setups
• High-performance BP-10 compound pads deliver optimized, balanced braking
• Neatly hidden internal parking brake shoe system provides a clean installation with strong static holding power
• Optional caliper finishes and rotor designs available to personalize style and performance

Specifications

• Caliper Type: AERO4, Radial Mount
• Caliper Material: Billet Aluminum
• Caliper Finish: Black Powder Coat
• Piston Count: 4 (Four)
• Rotor Diameter: 14 in.
• Rotor Design: Two-Piece (Rotor + Hat)
• Brake Pad Compound: BP-10
• Parking Brake: Internal Shoe System
• Position: Rear Axle
• Axle Compatibility: GM 12-Bolt

Included Components

• 2x AERO4 Radial Mount Caliper (LH/RH), Black Powder Coat
• 2x Two-Piece Rotor & Hat Assembly, 14 in.
• Internal Parking Brake Shoe Components
• BP-10 Brake Pads
• Axle Mounting Brackets and Hardware

Product Description

The Wilwood 140-10943-D is an AERO4 big brake rear parking brake kit built for the GM 12-bolt rear axle, a common rear end found in classic Chevrolet and GM muscle cars and trucks. Finished in black powder coat, the billet AERO4 radial-mount four-piston calipers deliver the "ultimate big brake solution" for rear axles that need genuine parking brake functionality alongside serious stopping power.

Paired with 14-inch two-piece rotors and high-performance BP-10 compound pads, this kit is designed to complement an aggressive front big brake upgrade, keeping braking balanced front to rear on show cars and high-performance street machines. The internal parking brake shoe system is neatly hidden within the assembly, providing a clean installation with strong static holding power - a genuine parking brake replacement rather than a separate add-on.

Unlike Wilwood's Dynalite or Dynapro FDLI-style rear kits, which use a one-piece integral disc/drum design, this AERO4 kit uses a two-piece rotor and hat assembly. Confirm your rear axle matches the GM 12-bolt housing before ordering, and pair this kit with a compatible Wilwood front big brake kit for a complete, matched brake system upgrade.