Wilwood 120-9703 Dynapro 4 Piston Lug Mount Brake Caliper Universal

Vehicle Fitment

• Universal Fit (Custom Brake Systems & Wilwood Kits Only, No Direct OEM Fitment)

Fitment Notes

• Designed for custom brake setups and Wilwood big brake kits
• Lug mount caliper with 5.25" mounting center spacing
• Compatible with 0.75"-0.83" rotor thickness (optimal 0.81")
• Supports rotor diameters from 10.00" to 13.06"
• Uses Wilwood 7812 brake pad shape
• Not compatible with factory OEM brake systems

Features

• Forged billet aluminum body provides superior strength and reduced flex
• 4-piston design delivers increased clamping force and braking performance
• Stainless steel pistons resist corrosion and reduce heat transfer
• Quick-E-Clip pad retention system allows fast pad changes without caliper removal
• Compact, low-profile design fits tight wheel and suspension clearances
• High rigidity reduces caliper deflection for improved pedal feel
• Optimized internal fluid pathways improve braking efficiency
• Race-proven Dynapro design suitable for street, track, and off-road use

Specifications

• Caliper Type: Dynapro Lug Mount
• Piston Count: 4
• Total Piston Area: 3.00 in²
• Piston Diameter: 1.38 inches (per piston)
• Material: Forged Billet Aluminum
• Finish: Black Powder Coat
• Weight: 3.8 lbs
• Mount Type: Lug Mount
• Mount Center: 5.25 inches
• Mount Hole Size: 0.39 inches
• Rotor Compatibility: 0.75"-0.83" thickness, up to 13.06" diameter
• Pad Type: 7812
• Inlet Port Size: 1/8-27 NPT
• Mounting Position: Universal (Left or Right)

Included Components

• 1x Brake Caliper (Dynapro Lug Mount)

Product Description

The Wilwood 120-9703 Dynapro lug mount brake caliper is a high-performance 4-piston solution engineered for custom brake systems, motorsports applications, and Wilwood big brake kits. Built using forged billet aluminum, this caliper offers exceptional strength and rigidity while maintaining a lightweight design, making it ideal for performance builds where both durability and weight savings are critical.

Featuring stainless steel pistons and a race-proven internal design, the Dynapro caliper delivers consistent clamping force, improved pedal feel, and reliable braking performance under demanding conditions. Its Quick-E-Clip pad retention system allows for rapid pad changes without removing the caliper, while the compact profile ensures compatibility with tight wheel clearances. Designed for versatility, this caliper supports a wide range of rotor sizes and is commonly used in street performance, drag racing, off-road, and track applications.