Wilwood 120-17193 Dynapro Narrow 4-Piston Universal Radial Brake Caliper

Narrow Dynapro Radial Brake Caliper

Wilwood Narrow DynaPro Four Piston Radial Mount Brake Calipers combine the versatility of radial mounting with a sleek profile, superior strength, and extreme durability in adverse conditions. Weighing in 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.

The DynaPro’s strength is a combination of process and design. The true stress flow forging process realigns the internal grain structure of the metal to flow within the contour of the caliper body. This produces a part with superior strength over billet machined or cast parts.

The body design, generated with 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 short, it delivers a firm pedal with exceptional stopping power. The Narrow DynaPro fits rotors up to 12.19” and features thick-wall stainless steel pistons for added protection against corrosion and pad heat transfer. All DynaPro calipers can also be optioned with Thermlock pistons for maximum thermal protection in sustained high-temperature applications. The DynaPro incorporates other performance enhancements unique to Wilwood. Stainless steel SRS bridge plates eliminate caliper bridge wear from pad drag and dampen noise and vibration during actuation. Internal fluid passages eliminate the need for external crossover tubes and four corner bleed screws allow for effective air evacuation regardless of mounting location. class="Gray11B">4 Piston Area (in²) 3.00 Piston Type Stainless Steel Dust Boot No

Rotor Dimensions

Rotor Width (in)	0.38
Rotor Diameter (in)	12.19

Pad Dimensions

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

Service Rating & Material

Material	Billet Aluminum
Weight (lbs)	4.1

Colors & Finish

Color	Anodized
Finish	Type III Anodized

Mounting

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

Specifications

Rotor Compatibility

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Rotor Width (in)	0.38
Max Rotor Width (in)	0.38
Min Rotor Width (in)	0.38
Max Rotor Diameter (in)	12.19
Min Rotor Diameter (in)	10.75

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
Mount

Piston Specifications

Piston Diameter 1 (in)	1.38
Piston Diameter 2 (in)	1.38
Piston Diameter 3 (in)
Total Piston Area (in²)	3.00

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