Wilwood 120-17628-BK Narrow DynaPro Four Piston Radial Mount Brake Caliper

The Wilwood Narrow DynaPro four piston radial mount caliper combines the versatility of radial mounting with a sleek profile, superior strength, and extreme durability in adverse conditions. Weighing as light as 3.58 pounds, the DynaPro has become a favored choice for a broad range of sports, rally, and off-road driving applications.

Stress-Flow Forged Construction:

The strength of the DynaPro is achieved through a combination of advanced process and innovative design. Stress-flow forging re-aligns the internal grain structure of the metal to flow within the contour of the caliper body, producing a component with superior strength over machined billet or cast parts. The FEA-generated body design features a radial transition between the piston bores and caliper bridges, eliminating machined steps and shoulders in this critical strength area to substantially increase resistance against deflection and body separation under high load.

Key Features:

• Four piston radial mount design for versatile mounting options
• Fits rotors up to 12.19 inches in diameter
• Heavy wall stainless steel pistons provide additional protection against corrosion and heat transfer
• 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 bleeder screws allow effective air evacuation regardless of mounting location
• Compatible with optional Thermlock pistons for maximum thermal protection in sustained high-heat applications
• Black anodized finish

Structural deflection and volume displacement testing have proven the efficiency of this innovative design, delivering a firm pedal feel with outstanding stopping power for high-performance braking applications.