Wednesday, April 25, 2018
PS1 Caliper – Part No: 120-8374
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PS-1 Product Number: 120-8374     Price: $91.74
Available Caliper #120-8374 Configurations

Clear Caliper

Right Hand

Clear Caliper

Left Hand

Caliper No: 120-8374
Wilwood PS-1  Caliper

Wilwood PS-1 Caliper
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The PS-1 Caliper is compact, lightweight (.93 pounds) and combines the strength of cast aluminum construction with a sleek low profile design. This caliper utilizes two stainless steel deep cup pistons to minimize heat transfer from the .30” thick pad to the brake fluid while employing high temperature square piston seals to control piston retraction. Internal crossover brake fluid passages eliminate the use of external crossover tubes. The PS-1 fits rotors with diameters ranging from 6.00” to 9.00”, thickness sizes from .15” to .20”.   

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120-8374 - Product Summary
Count: Area (in²): Type: Dust Boot:
2 0.99 Stainless No
Rotor Dimensions
Rotor Width(In): Rotor Diameter(In):
0.19 9
Pad Dimensions
Pad Area (in²): Pad Volume (in³):
2 0.36
Mount Center(In): Mount Position: Mount Side: Mount Type:
2.5 Left Hand Lug
Duty Rating & Material
Material: Weight(Lbs):
Aluminum 1.1
Colors & Finishes
Color: Finish:
Clear Clear Anodize
Product Documents
Full Product Product Data Sheet Installation Instructions
Click To View Click To Download

Vehicle Applications
Driving EnvironmentVehicle Sub-TypesApplication Duty
Junior Dragster Medium Duty
Kart Heavy Duty
Power Sports ATV, SnowmobileMedium Duty
Industrial Light Duty

Product Specifications
Rotor Compatibility
Rotor Width(In): 0.19
Maximum Rotor Width(In): 0.2
Minimum Rotor Width(In): 0.15
Maximum Rotor Diameter(In): 9
Minimum Rotor Diameter(In): 6
Brake Pad Specifications
Brake Pad Type 1: 4108
Brake Pad Type 2: N-A
Brake Pad Type 3: N-A
Total Pad Area (in²): 2
Total Pad Volume (in³): 0.36
Pad Dimensions & Part Numbers
Pad Dimensions for the PS-1

Pad Dimensions for the PS-1
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Piston Specifications
Piston 1 Bore(In): 1.12
Piston 2 Bore(In):
Piston 3 Bore(In):
Total Piston Area (in²): 0.99
Mounting Specifications
Mount Type: Lug
Mount Side: Left Hand
Mount Center(In): 2.5
Mount Hole Size(In): 0.32
Mount Height(In): 1.22
Inlet Thread Size: M10 x 1.25
Mount Dimensions & Part Numbers
Dimensions for the PS-1

Dimensions for the PS-1
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Parts & Accessories
O-Ring Kit: 130-2579
Replacement Dust Boot: N-A
Replacement Piston 1: 200-5089
Replacement Piston 2: N-A
Replacement Piston 3: N-A
Replacement Piston 4: N-A
Cross-Over O-Ring Kit: 130-10540
Bridge Bolt Kit: N-A
Wear Plate L/H: N-A
Wear Plate R/H: N-A
Pad Retainer: Call
Bleed Screw Kit: 220-4269
Self Bleeder Tube: N-A
Cross-Over Tube: N-A