Wilwood 140-13511-D Forged Dynalite Rear Parking Brake Kit, GM 8.2in BOP

Vehicle Fitment

• Universal fit for vehicles using the GM 8.2 in. BOP (Buick-Oldsmobile-Pontiac) rear axle, 2.75 in. offset - a common rear end in classic Buick, Oldsmobile, and Pontiac muscle cars

Fitment Notes

• Confirm your rear axle matches the GM 8.2 in. BOP housing with 2.75 in. offset and bearing before ordering - this kit is engineered specifically for that axle rather than a broader range
• Triple bolt pattern (5x4.50, 5x4.75, 5x5.00 in.) provides flexibility across multiple wheel bolt patterns
• Includes an internal parking brake shoe system, making it a genuine parking brake replacement rather than requiring a separate solution
• Rear kit only - pair with a compatible Wilwood front kit for a complete brake system upgrade

Features

• Forged billet Dynalite four-piston calipers provide strong, balanced rear braking for street/strip and show vehicles
• Black powder-coat caliper finish for a clean, understated performance look
• 12.19 in. one-piece rotor/drum design combines the rotor and integrated parking brake drum in a single component
• Cross-drilled and slotted rotor surface improves heat dissipation and reduces brake fade
• Neatly hidden internal parking brake shoe system provides a clean installation with strong static holding power
• Triple bolt pattern rotor accommodates multiple common wheel fitments
• High-friction brake pads included for optimized, balanced stopping performance

Specifications

• Caliper Type: Forged Dynalite
• Caliper Material: Forged Billet Aluminum
• Caliper Finish: Black Powder Coat
• Piston Count: 4 (Four)
• Rotor Diameter: 12.19 in.
• Rotor Thickness: 0.81 in.
• Rotor Construction: Vented
• Rotor Style: Cross-Drilled & Slotted
• Rotor Bolt Pattern: Triple 5x4.50 in. / 5x4.75 in. / 5x5.00 in.
• Parking Brake: Internal Shoe System
• Position: Rear Axle
• Axle Compatibility: GM 8.2 in. BOP, 2.75 in. Offset

Included Components

• 2x Forged Dynalite Caliper (LH/RH), Black Powder Coat
• 2x One-Piece Disc/Drum Rotor, Cross-Drilled & Slotted, 12.19 in.
• Internal Parking Brake Shoe Components
• High-Friction Brake Pads
• Axle Mounting Brackets and Hardware

Product Description

The Wilwood 140-13511-D is a Forged Dynalite rear parking brake kit engineered specifically for the GM 8.2-inch BOP rear axle with 2.75-inch offset - a rear end found across a wide range of classic Buick, Oldsmobile, and Pontiac muscle cars. Finished in black powder coat, the four-piston forged billet aluminum calipers deliver a meaningful upgrade in rear stopping power over factory drum brakes.

Paired with 12.19-inch one-piece rotors featuring a cross-drilled and slotted surface, this kit improves heat dissipation and reduces brake fade compared to stock equipment. A triple bolt pattern (5x4.50, 5x4.75, and 5x5.00 inches) built into the rotor design gives it flexibility across multiple common wheel fitments. Because it includes an internal drum parking brake integrated directly into the caliper assembly, it functions as a genuine parking brake replacement - an important detail for anyone converting from factory rear drums to rear discs.

This kit includes all necessary mounting hardware and high-friction brake pads for a complete, ready-to-install rear brake upgrade. Since fitment depends on your specific rear axle matching the GM 8.2-inch BOP housing and 2.75-inch offset, confirm those measurements on your vehicle before ordering.