Wilwood 120-11875 D154 Dual Piston Floater Disc Brake Caliper 1.12/1.12in Pistons Raw

The Wilwood D154 is a forged billet aluminum disc brake caliper engineered as a direct bolt-on, lightweight, high-strength, extreme-duty upgrade over the original cast iron calipers used on a broad range of factory disc brake-equipped mid-size GM cars and small trucks starting in 1978. This raw/unpainted version features dual 1.12-inch pistons and is designed for use with 0.81-inch rotors.

Key Features:

• Forged billet aluminum construction — delivers a superior strength-to-weight ratio compared to OEM cast iron calipers
• Dual stainless steel pistons (1.12/1.12 in.) — stainless material resists corrosion and reduces heat transfer from brake pads into the caliper body
• High-temperature square-faced bore seals — provide controlled piston retraction and reliable performance with a wider sealing contact area
• Vibration-dampening slide pin rings — fitted into caliper slide pin holes to minimize noise and vibration
• Dual bleed screws — located on both ends of the caliper to support left-hand or right-hand mounting, front leading or rear trailing configurations
• Raw/unpainted finish — ready for custom coating or bare installation
• Compatible with 0.81-inch rotor thickness

The D154 caliper series is also available in single-piston (2.50 in.) and larger dual-piston (1.62/1.62 in.) configurations, making it a versatile platform across a wide range of GM D154 applications. Its proven performance record spans everything from daily street driving to extreme, sustained high-temperature racing environments, as well as drum-to-disc conversion builds on hot rods and street machines.