DynaPro4R Drag Race rear brake kits deliver high torque stopping power with a substantial weight savings over the OE brake components. Dynamic mount steel rotors weigh only 5.7 pounds each. They attach to the OE hubs with lightweight forged aluminum hats using our T-nut mounting system that allows the rotor to move independently of the hat during heat cycles. This eliminates stress at the mount points and the subsequent rotor distortion that can otherwise occur with fixed mount steel plate rotors. Dynamic mount rotors also assure full release from the pads to run true and drag free down the track. Parking brakes are also eliminated for additional weight savings. Clamping force is provided by radial mount DynaPro 4R four piston aluminum calipers weighing in at only 4.1 pounds each. DP4R calipers feature stainless steel pistons, internal bore seals, stainless steel bridge wear plates, and allow easy access to the pads for service without removing the calipers from the mount. BP-20 compound SmartPads provide high response and holding power when cold, and resistance to fade when hot. The complete package mounts to the OE upright and hub with full bolt-on installation. This kit is configured for drag racing only and is not recommended for street use. A minimum size 17” wheels are required along with a stainless steel braided flexline kit available separately.
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.
| Download Name | File Size |
| ds1146.pdf | 635.98KB |
| Make | Model | Submodel | Years | Fitment Notes |
| Ford | Mustang | Base | 2015 | KIT,DRAG,REAR,MUSTANG 15-UP,NDPR 12.90x.38 ROTOR,DRILLED,ANO; RTR:12.90-IN DIA, SRP DRILLED ROTOR, DRILLED; CLPR:NARROW DYNAPRO RADIAL MOUNT, 4-PISTON, TYPE III ANO |
| Ford | Mustang | EcoBoost Premium | 2015 - 2018 | KIT,DRAG,REAR,MUSTANG 15-UP,NDPR 12.90x.38 ROTOR,DRILLED,ANO; RTR:12.90-IN DIA, SRP DRILLED ROTOR, DRILLED; CLPR:NARROW DYNAPRO RADIAL MOUNT, 4-PISTON, TYPE III ANO |
| Ford | Mustang | EcoBoost | 2015 - 2018 | KIT,DRAG,REAR,MUSTANG 15-UP,NDPR 12.90x.38 ROTOR,DRILLED,ANO; RTR:12.90-IN DIA, SRP DRILLED ROTOR, DRILLED; CLPR:NARROW DYNAPRO RADIAL MOUNT, 4-PISTON, TYPE III ANO |
| Ford | Mustang | GT Premium | 2015 - 2018 | KIT,DRAG,REAR,MUSTANG 15-UP,NDPR 12.90x.38 ROTOR,DRILLED,ANO; RTR:12.90-IN DIA, SRP DRILLED ROTOR, DRILLED; CLPR:NARROW DYNAPRO RADIAL MOUNT, 4-PISTON, TYPE III ANO Except Shelby GT300 Models |
| Ford | Mustang | GT | 2015 - 2018 | KIT,DRAG,REAR,MUSTANG 15-UP,NDPR 12.90x.38 ROTOR,DRILLED,ANO; RTR:12.90-IN DIA, SRP DRILLED ROTOR, DRILLED; CLPR:NARROW DYNAPRO RADIAL MOUNT, 4-PISTON, TYPE III ANO Except Shelby GT300 Models |
| Ford | Mustang | V6 | 2016 - 2017 | KIT,DRAG,REAR,MUSTANG 15-UP,NDPR 12.90x.38 ROTOR,DRILLED,ANO; RTR:12.90-IN DIA, SRP DRILLED ROTOR, DRILLED; CLPR:NARROW DYNAPRO RADIAL MOUNT, 4-PISTON, TYPE III ANO |
| Ford | Mustang | 2015 | KIT,DRAG,REAR,MUSTANG 15-UP,NDPR 12.90x.38 ROTOR,DRILLED,ANO; RTR:12.90-IN DIA, SRP DRILLED ROTOR, DRILLED; CLPR:NARROW DYNAPRO RADIAL MOUNT, 4-PISTON, TYPE III ANO Except Shelby GT300 Models |
| Details | |
| Part Type | Disc Brake Caliper / Rotor / Pad Kit |
| Kit Summary | |
| Axle Offset | 0.00 |
| Caliper Type | 4 - Type III Ano |
| Min Wheel Diameter Req'd* | 17 |
| Mount Type | Radial |
| Rear End Axle | OEM |
| Rotor Diameter | 12.90 |
| Kit Components & Specs / Rotors | |
| Bedded | No |
| Design Type | Solid |
| Dynamically Balanced | No |
| Left Hand - Part No | 160-4766 |
| Material | Steel |
| Outside Diameter (in) | 12.90 |
| Right Hand - Part No | 160-4766 |
| Style | Drilled |
| Surface Finish | Black Electro Coat |
| Type | SRP Drilled Rotor |
| Vane Count | Solid |
| Width (in) | 0.38 |
| Parts & Accessories / Caliper Parts | |
| Bleed Screw Kit | 220-0627 |
| Bridge Bolt Kit | 230-10117 |
| CrossOver O-Ring Kit | 130-10540 |
| O-ring Kit | 130-2655 |
| Pad Retainer | 300-9634 |
| Replacement Piston 1 | 200-7528 |
| Replacement Piston 2 | 200-7528 |
| Wear Plate - Left Hand | 300-5876 |
| Wear Plate - Right Hand | 300-5876 |
| Kit Components & Specs / Rotor Hats | |
| Bolt Circle 1 | 5 X 4.50 |
| Finish Color | Black E-Coat |
| Hat - Part No | 170-13927 |
| Hat Offset Dimension (in) | 1.200 |
| Material | Aluminum |
| Stud Diameter - BC 1 | 0.630 |
| Stud Diameter - BC 2 | 0.000 |
| Stud Diameter - BC 3 | 0.000 |
| Type | Big Brake Hat - Flared Bell |
| Parts & Accessories / Hat | |
| Bolt Kit | 230-8008 |
| Kit Components & Specs / Calipers | |
| Brake Pad Area (In²) | 6.36 |
| Brake Pad Plate | 7812 |
| Brake Pad Volume (In³) | 2.1 |
| Finish Color | Type III Ano |
| Left Hand - Part No | 120-9993 |
| Mount Type | Radial |
| Pad Compound | BP-20 |
| Piston 1 Bore (in) | 1.75 |
| Piston 2 Bore (in) | 1.75 |
| Piston Area (In²) | 4.80 |
| Piston Count | 4 |
| Piston Type | Stainless |
| Right Hand - Part No | 120-9993 |
| Type | Narrow Dynapro Radial Mount |
