Wilwood 120-7374-RD DynaPro Radial Mount Brake Caliper - 4-Piston Red

The Wilwood DynaPro Radial Mount Caliper (120-7374-RD) is a high-performance, four-piston forged aluminum brake caliper finished in red anodize. Combining pure race technology with an innovative stress-flow forged construction, the DynaPro delivers a firm pedal feel with outstanding stopping power for sports, rally, and off-road driving applications.

Stress-Flow Forged Construction

Unlike machined billet or cast parts, the DynaPro body is produced using a stress-flow forging process that re-aligns the internal grain structure of the aluminum to flow within the contour of the caliper body. This results in superior strength and fatigue resistance throughout the part. The FEA-generated body design incorporates a radial transition between the piston bores and caliper bridges, eliminating machined steps and shoulders in this critical load-bearing area. The result is substantially increased resistance against deflection and body separation under high braking loads — a performance advantage verified by structural deflection and volume displacement testing.

Key Features:

• Piston Configuration: Four-piston, 1.25" diameter dust-booted aluminum pistons for low-to-intermediate temperature applications
• Rotor Compatibility: Standard fitment accommodates rotors up to 12.19" (309.6mm) wide; 0.81" rotor width
• Pad Type: Uses Wilwood type 7816 brake pads
• Quick-Clip Pad Retainers: Top-supported pad retention allows fast pad inspection and replacement without dismounting the caliper; also increases inside radial clearance between the caliper body and lug hub
• SRS Stainless Bridge Plates: Eliminate caliper bridge wear from pad gouging while dampening noise and vibration during engagement
• Internal Fluid Passages: Eliminate the need for external crossover tubes for a cleaner installation
• Four-Corner Bleed Screws: Allow effective air evacuation regardless of mounting orientation
• Finish: Red anodized aluminum body
• Weight: As light as 3.58 lbs
• Mounting Style: Radial mount

Available Configurations: The DynaPro series is available in four configurations. Competition models use heavy-wall stainless steel pistons for added corrosion and heat-transfer protection. All DynaPro calipers can be optioned with Thermlock pistons for maximum thermal protection in sustained high-heat environments. A long-radius version accommodates rotors up to 13.00". Optional side inlet calipers simplify brake line plumbing for inboard-mounted brake setups on live axles and independent suspension rears.

The Wilwood 120-7374-RD is sold individually and is a proven choice for performance street, track day, rally, and off-road brake system builds.