Wilwood 120-16190 Forged Dynapro Piston Brake Caliper Mount - 4 5.25in

The Wilwood Forged DynaPro-Low Profile Lug Mount (FDP-LP) forged billet caliper represents the newest generation of four-piston calipers designed as an upgrade or replacement for applications previously using the Dynalite model series. Specifically engineered for limited outboard rotor hat clearance and narrow swept area rotors, this caliper delivers professional-grade braking performance in a compact, low-profile design.

Advanced Forging Technology:

The strength of the Forged DynaPro-Low Profile comes from stress-flow forging using premium grade billet aluminum. This process realigns the grain structure of the metal within the contour of the body design, producing a caliper with superior strength compared to parts simply machined from straight-grained billet blocks. The FEA-generated body design incorporates a highly fortified radial transition that eliminates steps and shoulders between the piston housings and bridges, substantially increasing resistance to deflection and caliper body separation under load.

Key Features:

• Four heavy-wall stainless steel pistons (1.38/1.38 inch diameter) resist corrosion and slow heat transfer from pads
• Designed for 0.81 inch thick rotors with 5.25 inch lug mount spacing
• Quick-E-Clip pad retainers support 4812-type brake pads from the top for fast pad service without caliper removal
• Slimmer profile with bottom pad supports removed for easier fitment in tight clearance applications
• Exclusive SRS bridge plates eliminate bridge wear from pad gouging and reduce pad rattle
• Internal fluid passages with four-corner bleed screws allow mounting in any front, rear, left, or right side position
• Anodized finish for corrosion resistance and professional appearance

Performance Benefits:

Structural deflection and volume displacement testing have proven significant reductions in overall deflection and decreases in fluid volume displacement, translating to increased clamping efficiency with less pedal travel. The heavy-wall piston design provides additional strength against backside deflection, delivering a firm pedal feel and efficient clamping even at high pressures generated by power boost systems. The SRS plate spring-loading action dampens vibration harmonics that contribute to brake squeal during engagement.