Monday, October 24, 2016
W4A Caliper – Part No: 120-11665-FS
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W4A Radial Mount Product Number: 120-11665-FS     Price: $488.93

Caliper No: 120-11665-FS
Wilwood W4A Radial Mount Caliper

Wilwood W4A Radial Mount Caliper
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W4A Radial Mount
The W4A forged four piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, four options for piston volume, and a newly increased rotor diameter ranging from 12.19" to 15.00" give this caliper the versatility necessary to suit all types of heavy weight braking requirements.  

The W4A 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.    Continue >>

120-11665-FS - Product Summary
Count: Area (in²): Type: Dust Boot:
4 4.84 Stainless No
Rotor Dimensions
Rotor Width(In): Rotor Diameter(In):
1.25 15
Pad Dimensions
Pad Area (in²): Pad Volume (in³):
11 5.2
Mount Center(In): Mount Position: Mount Side: Mount Type:
7.09 Front Mount Right Hand Radial
Duty Rating & Material
Material: Weight(Lbs):
Aluminum 7.6
Colors & Finishes
Color: Finish:
Black Black Powder Coat
Product Documents
Full Product Product Data Sheet Installation Instructions
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Vehicle Applications

Product Specifications
Rotor Compatibility
Rotor Width(In): 1.25
Maximum Rotor Width(In): 1.28
Minimum Rotor Width(In): 1.1
Maximum Rotor Diameter(In): 15
Minimum Rotor Diameter(In): 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 (in²): 11
Total Pad Volume (in³): 5.2
Pad Dimensions & Part Numbers
Pad Dimensions for the W4A Radial Mount

Pad Dimensions for the W4A Radial Mount
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Piston Specifications
Piston 1 Bore(In): 1.88
Piston 2 Bore(In): 1.62
Piston 3 Bore(In):
Total Piston Area (in²): 4.84
Mounting Specifications
Mount Type: Radial
Mount Side: Right Hand
Mount Center(In): 7.09
Mount Hole Size(In): 0.45
Mount Height(In): 2.09
Inlet Thread Size: 1/8-27 NPT
Mount Dimensions & Part Numbers
Dimensions for the W4A Radial Mount

Dimensions for the W4A Radial Mount
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Parts & Accessories
O-Ring Kit: 130-5100
Replacement Dust Boot: N-A
Replacement Piston 1: 200-7521
Replacement Piston 2: 200-7519
Replacement Piston 3: N-A
Replacement Piston 4: N-A
Cross-Over O-Ring Kit: N-A
Bridge Bolt Kit: N-A
Wear Plate L/H: 300-5876
Wear Plate R/H: 300-5876
Pad Retainer: 180-9874
Bleed Screw Kit: 220-6069
Self Bleeder Tube: N-A
Cross-Over Tube: 190-9875