Wilwood 120-14709-BK DynaPro-DS 4-Piston Radial Mount Disc Brake Caliper - Black

The Wilwood 120-14709-BK DynaPro Dust Seal Radial Mount Caliper (DPR-DS) is a high-performance, four-piston forged billet brake caliper engineered for sports, rally, and off-road driving applications. Finished in black, this caliper combines the flexibility of radial mounting with a sleek, low-profile body design and exceptional durability in demanding environments. Weighing just 3.58 lbs, it delivers outstanding stopping power without unnecessary mass.

Stress-Flow Forged Construction:

The DynaPro-DS is manufactured using a stress-flow forging process that re-aligns the internal grain structure of the premium-grade billet aluminum to follow the contour of the caliper body. This produces a component with superior structural integrity compared to traditional machined billet block or cast aluminum parts.

FEA-Optimized Body Design:

An FEA (Finite Element Analysis) generated body design incorporates a radial transition between the piston bores and caliper bridges, eliminating machined steps and shoulders in critical load-bearing areas. This design substantially increases resistance to deflection and body separation under high braking loads, translating directly to a firm, consistent pedal feel.

Dust Seal Piston System:

The DPR-DS features dust-sealed stainless steel pistons that are clear anodized to prevent corrosion and provide drag-free operation within the bores. Dust wiper seals work in conjunction with high-temperature, square-faced internal bore seals to protect against road and track-borne contamination — making this caliper well-suited for localities that require or prefer environmental sealing.

Key Features:

• Four-piston, radial mount caliper design
• Stress-flow forged premium-grade billet aluminum construction
• FEA-generated body for maximum deflection resistance and pedal firmness
• Dust-sealed stainless steel pistons with clear anodize for corrosion resistance
• Compatible with rotors up to 12.19" diameter
• Dust wiper seals plus high-temperature square-faced internal seals
• Black finish (powder coat / anodize)
• Weight: 3.58 lbs
• Sold individually

Thermlock insulated piston upgrades are available across the DynaPro caliper line for sustained high-heat applications requiring additional protection against heat transfer from brake pads.