Wilwood 120-17866 XRD Forged Lug Mount Disc Brake Caliper

The Wilwood XRD Lug Mount forged caliper represents the latest evolution in high-performance brake caliper technology, designed as a direct upgrade or replacement for applications previously using the Dynalite model series. Combining race-proven engineering with exclusive Wilwood performance innovations, the XRD delivers superior strength, reduced deflection, and outstanding stopping power in a sleek, fully machined package.

Advanced Stress-Flow Forging Process:

The XRD caliper body is stress-flow forged from premium grade billet aluminum, a process that realigns the metal's grain structure to follow the contour of the body design. This produces a component with significantly greater strength compared to parts simply machined from straight-grained billet blocks. The result is a caliper that resists deflection and maintains structural integrity under extreme braking loads.

FEA-Optimized Body Design:

Developed using Finite Element Analysis (FEA), the XRD body incorporates a highly fortified radial transition between the piston housings and bridges, eliminating traditional steps and shoulders. This radiused design in critical stress areas substantially increases resistance to deflection and caliper body separation under load. Structural testing has proven that reductions in overall deflection and fluid volume displacement translate directly to increased clamping efficiency with less pedal travel, delivering a firm, responsive pedal feel.

Key Features:

• Stress-flow forged from premium grade billet aluminum for maximum strength
• FEA-generated body design with fortified radial transitions
• Reduced deflection and volume displacement for improved pedal response
• Quick-E-Clip pad retainers for fast pad service without caliper removal
• Accommodates 7812 type brake pads with top-mounted retention
• Slimmer profile with eliminated bottom pad supports for improved fitment in tight clearance applications
• Fully detailed machined finish
• Lug mount configuration for secure installation

The XRD caliper is engineered for racers and enthusiasts who demand professional-grade braking performance with easy serviceability and versatile fitment options.