Wilwood 120-9730 Narrow DynaPro Lug Mount Disc Brake Caliper Mount - 3.50

The Wilwood 120-9730 Narrow DynaPro (NDP) Lug Mount Disc Brake Caliper delivers exceptional clamping efficiency and pedal response through an advanced combination of stress-flow forging and FEA-optimized body design. With a 3.50-inch lug mount spacing, this caliper is engineered for high-performance street and racing applications where strength, heat resistance, and reliable stopping power are essential.

Key Features:

• Stress-Flow Forged Construction: Forged from premium-grade billet aluminum, the stress-flow forging process realigns the metal's grain structure to the contour of the caliper body—delivering superior strength over conventional machined billet parts.
• FEA-Optimized Body Design: A radial transition between piston housings and bridges eliminates stress-concentrating steps and shoulders, substantially increasing resistance to deflection and caliper body separation under load.
• Center Bridge Bolts: Additional center bridge hardware provides enhanced resistance to body separation across the center of the brake pads for reliable, consistent performance under heavy braking.
• Heavy-Wall Stainless Steel Pistons: Corrosion-resistant stainless steel pistons feature increased wall thickness to resist backside deflection, slow heat transfer from the pads, and maintain a firm, efficient pedal feel at all pressure levels.
• Quick-E-Clip Pad Retainers: Supports 7816-type brake pads from the top, enabling fast pad service without caliper removal. The slim-profile design eliminates bottom pad supports for improved bottom-side clearance and easier installation in tight-clearance applications.
• Replaceable Stainless Steel SRS Bridge Plates: Eliminate bridge wear caused by pad gouging to extend caliper body service life. The spring-loaded design also prevents pad rattle and dampens vibration harmonics that contribute to brake squeal during engagement.
• Internal Fluid Passages with Four-Corner Bleed Screws: Simplify the bleeding process regardless of caliper mounting orientation.
• Reduced Deflection and Fluid Displacement: Structural testing confirms reduced overall deflection and decreased fluid volume displacement, resulting in improved clamping efficiency and shorter pedal travel.

The Wilwood 120-9730 NDP caliper is the ideal choice for performance builders seeking a lightweight, high-strength brake caliper that combines race-proven engineering with real-world serviceability. Compatible with 7816-series brake pads and designed for lug mount rotor hat configurations.