Wilwood 120-15563-SI Billet Narrow Dynalite Radial Mount Brake Caliper 1.38in Piston

The Wilwood 120-15563-SI Billet Narrow Mount Dynalite (NDLR) Radial Mount disc brake caliper delivers lightweight performance and exceptional stopping power for Sprint, Midget, and other inboard brake applications. Weighing just 3.00 pounds, this compact caliper features a radial mount configuration with 4.75-inch center mounting spacing and is designed specifically for 0.810-inch width rotors.

Key Features:

• Fully CNC-machined billet aluminum construction with hard anodized finish for durability and corrosion resistance
• Four stainless steel cup pistons (1.38-inch diameter) provide strong, consistent clamping force
• Spacer-less design with single split bridge area for added strength and simplified installation
• Internal fluid ports eliminate external fluid tubes for cleaner installation and reduced leak points
• Dual corner bleeds ensure complete air purging for optimal brake performance
• Outboard inlets positioned for standard inboard mounting applications
• Stainless steel anti-rattle wear plates on bridges reduce wear and provide smooth, rattle-free pad operation
• Center bridge bolt ensures overall caliper strength and positive retention of top-loaded brake pads

This caliper combines race-proven engineering with precision manufacturing to deliver reliable, consistent braking performance in demanding motorsport environments. The hard anodized finish provides excellent wear resistance while maintaining the caliper's lightweight characteristics.