Wilwood 140-9315-D Dynalite Rear Disc Brake Kit for GM 12-Bolt with 12.19-Inch Rotor

Upgrade the rear braking performance of your GM 12-bolt axle with the Wilwood 140-9315-D Dynalite rear disc brake kit. Designed as a complete four-piston rear caliper solution, this kit combines a lightweight aluminum caliper with a drilled and slotted iron rotor to provide responsive braking, effective heat management, and consistent performance for street, performance, and custom applications. The black powder-coated finish adds durable protection and a clean appearance behind the wheel.
The kit includes a 12.188-inch drilled and slotted iron rotor, offset hat, and provisions for a parking brake, making it a practical choice for builds that require both enhanced braking capability and rear parking-brake functionality. The Dynalite caliper is engineered for reliable operation and reduced unsprung weight, helping support improved suspension response while delivering firm, controlled stopping power.
Designed specifically for GM 12-bolt rear axles, the Wilwood 140-9315-D provides a purpose-built fitment for enthusiasts and installers seeking a streamlined rear disc brake conversion. Verify axle configuration, wheel clearance, rotor placement, and related installation requirements before ordering to ensure compatibility with your vehicle and existing brake components.

Features:

• Brand: Wilwood

• Part Number: 140-9315-D

• Application: Rear disc brake kit for GM 12-bolt axles

• Caliper: Dynalite four-piston aluminum caliper

• Rotor: 12.188-inch drilled and slotted iron rotor

• Rotor Configuration: Rear offset hat design

• Parking Brake: Includes parking-brake provisions

• Finish: Durable black powder coat

• Kit Type: Complete rear brake kit