PS1 Caliper – Part No: 120-5456
Call (805) 388-1188
Prod #: 120-5456
Price: $105.96
Available Caliper #120-5456 Configurations
PS-1 - Product Summary
Caliper No: 120-5456

Piston Count 2
Piston Area (in²) 0.79
Piston Type Stainless
Dust Boot No
Rotor Dimensions
Rotor Width (in) 0.19
Rotor Diameter(in) 9.00
Pad Dimensions
Pad Area (in²) 2
Pad Volume (in³) 0.36
Duty Rating & Material
Material Forged Aluminium
Weight(Lbs) 1.1
Colors & Finish
Color Clear
Finish Clear Anodize

Mount Center(in) 2.50
Mount Position
Mount Side Left Hand
Mount Type Lug
UPC Number
UPC 889545004137
Product Documents
Product Data Sheet

Click To Download
Installation Instructions

WARNING: Cancer and Reproductive Harm
Applicable to Brake Pads Only

120-5456 - Product Description


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”.

Vehicle Applications
Driving Environment Junior Dragster
Vehicle Sub-Types
Application Duty Medium Duty
Driving Environment Kart
Vehicle Sub-Types
Application Duty Heavy Duty
Driving Environment Power Sports
Vehicle Sub-Types ATV, Snowmobile
Application Duty Medium Duty
Driving Environment Industrial
Vehicle Sub-Types
Application Duty Light Duty

Product Specifications

Rotor Compatibility
Rotor Width (in) 0.19
Maximum Rotor Width (in) 0.20
Minimum Rotor Width (in) 0.15
Maximum Rotor Diameter(in) 9.00
Minimum Rotor Diameter(in) 6.00

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
Piston Specifications
Piston 1 Bore (in) 1.00
Piston 2 Bore (in)
Piston 3 Bore (in)
Total Piston Area (in²) 0.79

Mounting Specifications
Mount Type Lug
Mount Side Left Hand
Mount Center(in) 2.50
Mount Hole Size(in) 0.32
Mount Height(in) 1.22
Inlet Thread Size 1/8-27 NPT
Pad Dimensions & Part Numbers
Pad Dimensions for the PS-1 Pad Dimensions for the PS-1 Zoom Image
Axle Set P/N
Pad Type
Non-Bedded Pads - by Compounds
CM - Composite Metallic
Mount Dimensions & Part Numbers

Dimensions for the PS-1 Dimensions for the PS-1 Zoom Image

Additional Notes

Parts & Accessories

O-Ring Kit 130-4320
Replacement Dust Boot N-A
Replacement Piston 1 200-4309
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
Products commonly used with this item:

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All images shown are for illustrative purposes only. Actual product received may be different than what is portrayed on the web site.
Wilwood makes every effort to maintain our web site to ensure the accuracy of prices and product information. However, product information and prices are subject to change without notice. Please call (805) 388-1188 before ordering to verify current prices and product information.
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Version: 3.05 June 23, 2023