Tuesday, April 24, 2018
GM D52 Dual Piston Caliper – Part No: 120-10938-BK
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D52 Dual Piston Floater Product Number: 120-10938-BK     Price: $178.19
Available Caliper #120-10938 Configurations

Black Caliper


Black Caliper


Red Caliper


Caliper No: 120-10938-BK
Wilwood D52 Dual Piston Floater Caliper

Wilwood D52 Dual Piston Floater Caliper
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D52 Dual Piston Floater
The D52 caliper is a direct bolt-on 2 piston replacement for the factory original single calipers on many 1968-96 GM Passenger Vehicles and Trucks. Forged billet aluminum bodies, stainless steel pistons, and competition style high-temperature seals put and end to the rust, bore pitting, and seal failures that plague the OE caliper design. D52 calipers provide low-maintenance performance and a huge weight savings with high temperature reliability for the street and track.  

D52 calipers mount in the stock location over stock rotors, use the original style OE D52 brake pads and an OE 7/16-20 banjo bolt brake line. Calipers can be used with most wheels that clear the OE calipers. The rear calipers with 1.25” piston provide 2.46 cubic inches of piston area per caliper, to maintain the original front to rear brake bias and use of the OE master cylinder. D52 Calipers come hardened slide pins.   Continue >>

120-10938-BK - Product Summary
Count: Area (in²): Type: Dust Boot:
2 2.46 Stainless No
Rotor Dimensions
Rotor Width(In): Rotor Diameter(In):
1.28 12.19
Pad Dimensions
Pad Area (in²): Pad Volume (in³):
10 3.9
Mount Center(In): Mount Position: Mount Side: Mount Type:
7.06 Universal Floating
Duty Rating & Material
Material: Weight(Lbs):
Aluminum 5.5
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): 1.28
Maximum Rotor Width(In): 1.28
Minimum Rotor Width(In): 1.19
Maximum Rotor Diameter(In): 12.19
Minimum Rotor Diameter(In): 11
Brake Pad Specifications
Brake Pad Type 1: D52
Brake Pad Type 2: N-A
Brake Pad Type 3: N-A
Total Pad Area (in²): 10
Total Pad Volume (in³): 3.9
Pad Dimensions & Part Numbers
Pad Dimensions for the D52 Dual Piston Floater

Pad Dimensions for the D52 Dual Piston Floater
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Piston Specifications
Piston 1 Bore(In): 1.25
Piston 2 Bore(In): 1.25
Piston 3 Bore(In):
Total Piston Area (in²): 2.46
Mounting Specifications
Mount Type: Floating
Mount Side: Universal
Mount Center(In): 7.06
Mount Hole Size(In): 0.69
Mount Height(In): 0.77
Inlet Thread Size: 7/16-20
Mount Dimensions & Part Numbers
Dimensions for the D52 Dual Piston Floater

Dimensions for the D52 Dual Piston Floater
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Parts & Accessories
O-Ring Kit: 130-2479
Replacement Dust Boot: N-A
Replacement Piston 1: 200-10931
Replacement Piston 2: N-A
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: N-A
Wear Plate R/H: N-A
Pad Retainer: N-A
Bleed Screw Kit: 220-0627
Self Bleeder Tube: N-A
Cross-Over Tube: N-A