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Wilwood 120-11663RSN

Wilwood W6A 6 Piston Brake Caliper Radial Mount


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Wilwood W6A 6 Piston Brake Caliper Radial Mount $586.94
Out of stock
To order this item contact Customer Service at 1-800-345-4545.
W6A 6 Piston Brake Caliper
  • Radial Mount
  • Stainless Steel Pistons
  • 1.62'' / 1.12'' / 1.12'' Piston Bore Sizes
  • 1.25'' Brake Disc Width
  • Right Hand, Rear-of-Rotor Mount
  • Nickel Plated Finish
  • Wilwood 120-11663RSN Details

    W6A Brake Calipers

  • Stainless Steel Pistons
  • 1.62'' / 1.12'' / 1.12'' Piston Bore Sizes
  • 1.25'' Brake Disc Width

    Product Specifications
    Rotor Compatibility
    Rotor Width:1.25''
    Maximum Rotor Width:1.28''
    Minimum Rotor Width:1.1''
    Maximum Rotor Diameter:15''
    Minimum Rotor Diameter:12.19''
    Brake Pad Specifications
    Brake Pad Type 1:6617
    Brake Pad Type 2:N/A
    Brake Pad Type 3:N/A
    Total Pad Area (in/sq):11''
    Total Pad Volume (in/sq):5.2''
    Piston Specifications
    Piston 1 Bore:1.62''
    Piston 2 Bore:1.12''
    Piston 3 Bore:1.12''
    Piston 4 Bore:N/A
    Total Piston Area (in/sq):4.04''
    Mounting Specifications
    Mount Type:Radial
    Mount Side:Right Hand
    Mount Center:7.09''
    Mount Hole Size:0.45''
    Mount Height:2.09''

  • Specifications:

    Fittings Included
    Brackets Included
    Brake Pads Included
    Caliper Finish
    Nickel plated
    Caliper Logo
    Caliper Material
    Caliper Piston Quantity
    Caliper Series
    W6A Radial Mount
    Fitting Attachment 1
    Female Threads
    Parking Brake Provision
    Piston Diameter (in.)
    Sold individually
    Rotor Thickness (in.)
    Thread Size (in.)
    1/8-27 NPT
    Manufacturer's Part Number:

    Heavy Duty Stopping Power for Road or Track!

    The competition technology that is integrated into Wilwood's W6A six piston forged brake caliper provides outstanding performance, durability and features a configuration design that allows widespread versatility! W6A brake caliper has a radial mount design, two options for piston volume, and a redisigned brake rotor diameter range from 12.19'' to 15.00'' which allows the W6A brake caliper the compatibility for just about every situation of competition duty stopping you need it to provide.

    W6A brake calipers provide the pad wear performance advantages of differential bore pistons with the option for ultimate heat protection using Thermlock piston equipped models. Differential piston bores compensate for leading-edge mechanical loading and temperature variances across the pad face to reduce pad taper wear in sustained high temperature applications. Thermlock pistons block heat transfer from the pads and reduce temperatures in the caliper, fluid, and seals by up to 25% over standard stainless steel pistons. This is the go-to calipers for all types sustained hard braking competition cars.

    Click Here for More Thermolock Piston Details

    The W6A body is the product of FEA computer design and stress flow forging technology. FEA technology allows the designer to test the prototype in a computer environment to determine the optimal structural design within the dimensional parameters of the component. Stress flow forging produces a part with the internal grain structure of the metal aligned in the direction of the flow of the body contour. The results are a caliper with superior clamping efficiency and ultimate strength against fatigue, stresses, and distortion under load.

    The performance of the W6A is enhanced with SRS bridge plates, snap-ring locked pad retainer pins, recessed two-piece bleed screw assemblies and dampen mounted fluid transfer tubes. SRS bridge plates eliminate all bridge wear caused by pad gouging. The spring-loaded action of the plates also eliminates pad rattle. Snap ring clips lock the pad pins in place to provide positive retention and allow easy service without caliper removal. The bleed screws are recess mounted for protection against impact and debris. The fluid tubes are dampen mounted to protect them from fatigue or damage from vibration or debris. Calipers are anodized in high luster black to protect from corrosion and maintain their high-tech appearance.
  • All W6A brake calipers are rear-of-rotor mount design
  • Available in differential bore or standard symmetrical bore piston configurations
  • Stainlees Steel or Thermolock pistons
  • Fits rotors from 12.19'' to 15.00'' in diameter, and widths from 1.10'' to 1.25''
  • Calipers weigh only 7.50 pounds

  • Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.


    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.