Wilwood 120-17166-Y D31 Rear Dual Piston Disc Brake Caliper Yellow

The Wilwood 120-17166-Y is a D31 series rear dual-piston disc brake caliper finished in a high-visibility yellow anodize. Designed as a direct-fit replacement or performance upgrade caliper for Porsche applications, this caliper delivers reliable, fade-resistant braking with Wilwood's proven billet aluminum construction.

The D31 is a two-piston sliding/floating caliper design engineered for rear brake duty on Porsche platforms. It features a 1.62-inch bore diameter piston, a 0.94-inch rotor thickness capacity, and a 3.00-inch radial mount spacing, making it a precise fit for factory and custom rear brake setups.

Key Features:

• D31 dual-piston floating caliper design
• 1.62-inch (41mm) single bore piston diameter
• 0.94-inch maximum rotor thickness
• 3.00-inch radial mount bolt spacing
• Lightweight billet aluminum body construction
• Yellow anodized finish for corrosion resistance and visual appeal
• Compatible with Wilwood and OEM-spec Porsche brake pads
• Bleeder screw included

The yellow anodized finish not only provides an eye-catching appearance behind open-spoke wheels but also serves as a durable protective coating against moisture and road debris. This caliper is compatible with standard D31-series brake pads, giving you broad pad compound selection for street or track use.