Wilwood 120-14091 Dynapro Narrow Universal Radial 4 Piston Brake Caliper, Red.

Narrow Dynapro Radial Caliper

Wilwood’s Narrow Dynapro four-piston radial calipers combine radial mount versatility with a sleek profile, superior strength, and extreme durability in adverse conditions. Tipping the scales at a mere 3.58 pounds, the Dynapro has become the caliper of choice for a broad range of sport driving, rally, and off-road applications. Narrow Dynapro four-piston radial calipers combine pure race technology with Wilwood's next-generation performance enhancements.

The strength of the Dynapro is a combination of process and design. The real stress flow forging process realigns the internal grain structure of the metal to flow within the contour of the caliper body.

This produces a piece with superior strength to parts machined from solid block or castings. The body design, generated through Finite Element Analysis (FEA), features a radial transition between the piston bores and the caliper bridges. This eliminates machined steps and shoulders in this critical strength area and substantially increases resistance to deflection and body separation under high loads. Structural deflection and volumetric displacement tests have proven the effectiveness of this innovative design. In summary, it delivers a firm pedal with exceptional stopping power. The Narrow DynaPro fits rotors up to 12.19” and features thick-walled stainless steel pistons for additional protection against corrosion and heat transfer from the pads. All DynaPro calipers can also be fitted with Thermlock pistons for maximum thermal protection in sustained high-heat applications. The DynaPro incorporates other Wilwood-exclusive performance enhancements. Stainless steel SRS bridge plates eliminate caliper bridge wear from pad drag while dampening noise and vibration during engagement. Internal fluid passages eliminate the need for external crossover tubes, and four-corner bleeder screws allow for efficient air evacuation regardless of mounting location. class="Gray11B">4 Piston Area (in²) 1.98 Piston Type Stainless Piston Dust Boot No

Rotor Dimensions

Rotor Width (in)	0.81
Rotor Diameter (in)	12.88

Pad Dimensions

Pad Area (in²)	6.36
Pad Volume (in³)	2.1

Service & Material Rating

Material	Billet Aluminum
Weight (lbs)	4.0

Colors & Finish

Color	Red
Finish	Red Powder Coat

Mounting

Mounting Center (in)	4.75
Mounting Position
Mounting Side	Universal
Mount Type	Radial

Specifications

Rotor Compatibility

Rotor Width (in)	0.81
Max Rotor Width (in)	0.86
Min Rotor Width (in)	0.75
Max Rotor Diameter (in)
Min Rotor Diameter (in)	11.75

Brake Pad Specifications

Brake Pad Type 1	7812
Brake Pad Type 2	N-A
Brake Pad Type 3	N-A
Total Pad Area (in²)	6.36
Total Pad Volume (in³)	2.1
Mounting

Piston

Specifications

Piston Bore 1 (in)	1.12
Piston Bore 2 (in)	1.12
Piston Bore 3 (in)
Total Piston Area (in²)

Mounting Specifications

Mount Type	Radial
Mounting Side	Universal
Mounting Center (in)	4.75
Mounting Hole Size (in)	0.39
Mounting Height (in)	1.61
Inlet Thread Size	1/8-27 NPT