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Wilwood Brakes Narrow Dynapro Radial Mount 120-14091-RD

Wilwood Brakes Narrow Dynapro Radial Mount 120-14091-RD
Wilwood Brakes Narrow Dynapro Radial Mount 120-14091-RDWilwood Brakes Narrow Dynapro Radial Mount 120-14091-RD
$466.99 ea
NEWARRIVING SOONEstimated Ship Date 12/22/2022 (If Ordered Today)24 available from WILWOOD ENGINEERING as of 11/26/2022
Model: 3924569
Supplier has not provided any fitment data for this product.
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Wilwood Narrow DynaPro four piston radial mount calipers combines the versatility of radial mounting with a sleek profile, superior strength, and extreme durability in adverse conditions. With an overall weight as light as 3.58 pounds, the DynaPro has become a favored choice for a broad range of sports, rally, and off-road driving applications.Narrow DynaPro four piston radial mount calipers combine pure race technology with a new generation of Wilwood performance enhancements. The Narrow DynaPro combines the versatility of radial mounting with a sleek profile, superior strength, and extreme durability in adverse conditions.

The strength of the DynaPro is a combination of process and design. The process of stess-flow forging re-aligns the internal grain structure of the metal to flow within the contour of the caliper body. This produces a part with superior strength over machined block billet parts or castings. The FEA generated body design features a radial transition between the piston bores and caliper bridges. This eliminates macined steps and shoulders in this critical strength area and substantially increases the resistance against deflection and body separation under high load. Structural deflection and volume displacement testing have proven the efficiency of this innovative design. The bottom line is a firm pedal with outstanding stopping power.

The Narrow DynaPro fits rotors up to 12.19” feature heavy wall stainless pistons to provide addition protection against corrosion and heat transfer from the pads. All DyanPro calipers can also be optioned with Thermlock pistons for maximum thermal protection in sustained high-heat applications. The DynaPro incorporates other exclusive Wilwood performance enhancements. Stainless SRS 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 and four corner bleed screws allow effective gas evacuation regardless of mounting location.

About Wilwood Engineering

Wilwood Engineering designs and manufactures high-performance disc brake systems. Since the company’s inception in 1977 by Bill Wood, we have developed a substantial matrix of brake components and engineering techniques that allow us to quickly and reliably create brake systems for almost any application. Our core ability is the rapid development of custom engineered brake systems using a combination of off-the-shelf and custom components. In addition to designing and manufacturing brakes for all types of competitive motor sports, Wilwood also manufactures brake systems and components for agricultural equipment, industrial applications, utility vehicles, snowmobiles, quads, motorcycles and military vehicles.

With headquarters in Camarillo, California, Wilwood employs approximately 250 people. We have on-shelf stock of more than 300 different brake calipers, 200 rotor designs, 100 master cylinder designs and a wide assortment of brackets, fittings, valves and brake lines. Our off-shelf brake calipers range in size from tiny calipers used on go-carts and light duty industrial equipment, to heavy duty original equipment brakes for the U.S. military Humvee.

Wilwood's engineering department uses the latest computer-aided design and manufacturing techniques in conjunction with finite element analysis, dynamic test and cycle test equipment, to find high-performance and reliability solutions for the most difficult braking tasks. Our extensive inventory of proprietary on-the-shelf components allow us to provide cost-effective solutions for unique brake applications.

Wilwood is ISO 9000 compliant and has extensive experience maintaining quality levels of 100ppm or less for original equipment manufacturers.


Parts & Accessories
Bleed Screw Kit 220-0627
Bridge Bolt Kit 230-10118
Cross-Over O-Ring Kit 130-10540
O-Ring Kit 130-2579
Pad Retainer 300-9636
Replacement Piston 1 200-8439
Replacement Piston 2 200-8439
Wear Plate L/H 300-5876
Wear Plate R/H 300-5876
Brake Pad Specifications
Brake Pad Type 1 7812
Total Pad Area (in²) 6.36
Total Pad Volume (in³) 2.1
Colors & Finish
Color Red
Finish Red Powder Coat
Dust Boot No
Piston Area (in²) 1.98
Piston Count 4
Piston Type Stainless
Mounting Specifications
Inlet Thread Size 1/8-27 NPT
Mount Center(in) 4.75
Mount Height(in) 1.61
Mount Hole Size(in) 0.39
Mount Side Universal
Mount Type Radial
Duty Rating & Material
Material Aluminum
Weight(Lbs) 4.0
Rotor Compatibility
Maximum Rotor Diameter(in) 12.88
Maximum Rotor Width (in) 0.86
Minimum Rotor Diameter(in) 11.75
Minimum Rotor Width (in) 0.75
Rotor Width (in) 0.81
Mount Center(in) 4.75
Mount Side Universal
Mount Type Radial
Pad Dimensions
Pad Area (in²) 6.36
Pad Volume (in³) 2.1
Piston Specifications
Piston 1 Bore (in) 1.12
Piston 2 Bore (in) 1.12
Total Piston Area (in²) 1.98
Rotor Dimensions
Rotor Diameter(in) 12.88
Rotor Width (in) 0.81


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Muscle Cars & Classics 2022