Wilwood 120-10000 Dynapro Narrow Universal Radial 4-Piston Brake Caliper

Narrow Dynapro Radial Mount Caliper

Wilwood Narrow DynaPro radial mount four piston brake calipers combine radial mount versatility with a sleek profile, superior strength, and extreme durability in adverse conditions. With an overall weight of only 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 stress-flow forging process realigns the internal metallic grain structure to flow within the contour of the caliper body. This produces a piece with superior strength to machined from billet or cast parts.

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 testing has proven the effectiveness of this innovative design. Simply put, 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 added protection against corrosion and heat transfer from the pads. All DynaPro calipers can also be optioned with Thermlock pistons for maximum thermal protection in sustained high heat applications. The DynaPro incorporates other performance enhancements exclusive to Wilwood. 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 effective air evacuation, regardless of mounting location. class="Gray11B">4 Piston Area (in²) 4.80 Piston Type Stainless Dust Boot No

Rotor Dimensions

Rotor Width (in)	0.81
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

Rotor Width (in)	0.81
Max Rotor Width (in)	0.86
Min Rotor Width (in)	0.75
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
Mounting

Piston Specifications

Piston Diameter 1 (in)	1.75
Piston Diameter 2 (in)	1.75
Piston Diameter 3 (in)
Total Piston Area (in²)	4.80

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