Wilwood 120-14091 Narrow DynaPro Four Piston Radial Mount Brake Caliper

The Wilwood Narrow DynaPro four-piston radial mount brake caliper delivers exceptional stopping power in a lightweight, compact design. Weighing as little as 3.58 pounds, this caliper combines the versatility of radial mounting with superior strength and extreme durability, making it an ideal choice for sports, rally, and off-road applications.

Advanced Stress-Flow Forged Construction:

The DynaPro's exceptional strength comes from its stress-flow forging process, which re-aligns the internal grain structure of the metal to flow within the contour of the caliper body. This creates a component with significantly greater strength compared to machined billet or cast alternatives. The FEA-engineered body design features a radial transition between piston bores and caliper bridges, eliminating machined steps and shoulders in critical stress areas to substantially increase resistance against deflection and body separation under high loads.

Key Features:

• Four-piston radial mount design for versatile installation options
• Fits rotors up to 12.19 inches in diameter
• Heavy-wall stainless steel pistons for enhanced corrosion resistance and reduced heat transfer
• Compatible with optional Thermlock pistons for maximum thermal protection in sustained high-heat applications
• Stainless steel SRS bridge plates eliminate caliper bridge wear from pad gouging while dampening noise and vibration
• Internal fluid passages eliminate the need for external crossover tubes
• Four-corner bleed screws allow effective gas evacuation regardless of mounting location
• Lightweight construction at approximately 3.58 lbs

This caliper delivers a firm pedal feel with outstanding stopping power, backed by structural deflection and volume displacement testing that proves the efficiency of Wilwood's innovative design approach.