GM Single Piston Caliper – Part No: 120-5861
Call (805) 388-1188
GM III Single Piston Floater
Prod #: 120-5861
Price: $149.94

GM III Single Piston Floater - Product Summary

Pistons
Piston Count 1
Piston Area (in²) 5.94
Piston Type Stainless
Dust Boot No
Rotor Dimensions
Rotor Width(in) 1
Rotor Diameter(in) 11.75
Pad Dimensions
Pad Area (in²) 10
Pad Volume (in³) 3.9
Duty Rating & Material
Material Aluminum
Weight(Lbs) 3.7
Colors & Finish
Color Clear
Finish Clear Anodize

Mounting
Mount Center(in) 7.06
Mount Position
Mount Side Universal
Mount Type Floating
Product Documents
Product Data Sheet

Click To Download
Installation Instructions


120-5861 - Product Description

GM III Single Piston Floater

Wilwood’s GMIII caliper represents the latest refinements in caliper design and manufacturing through solid modeling and stress simulation programs. The result is the most rigid, highest torque, lightweight aluminum caliper with weights starting at 3.36 pounds. Requires use of hardened Wilwood slide pins (sold separately), request part no. 230-0619 (slide pin kit) contains 4 slide pins, enough for two calipers

The real strength comes from its exclusive triple bridge configuration which provides a tremendous increase in clamping force over other twin bridge calipers. Efficient­ designs further maximize weight savings: material is properly placed to fortify all load bearing points. Each caliper model has its own unique casting: 2.38” diameter piston calipers incorporate a smaller external contour than the larger 2.75” diameter piston calipers. Any material that did not contribute to strength, was eliminated for weight reduction.

The GMIII?incorporates standard Wilwood features like stainless steel pistons for increased fluid protection and high temperature seals for controlled retraction which provides improved driver feel. The GM III for 1.00” width rotor is machined and fitted with OEM type slide pin vibration dampeners for a direct OEM caliper interchange.


Vehicle Applications
Driving Environment Street Rods
Vehicle Sub-Types
Application Duty Heavy Duty
Driving Environment Street Performance
Vehicle Sub-Types Domestic
Application Duty Heavy Duty
Driving Environment Street Performance
Vehicle Sub-Types Import
Application Duty Heavy Duty
Driving Environment Late Model Asphalt
Vehicle Sub-Types ASA, All Pro, SW Tour, etc...
Application Duty Medium Duty
Driving Environment Drag Racing
Vehicle Sub-Types
Application Duty Heavy Duty
Driving Environment Off Road
Vehicle Sub-Types
Application Duty Medium Duty

Product Specifications

Rotor Compatibility
Rotor Width(in) 1
Maximum Rotor Width(in) 1.04
Minimum Rotor Width(in) 0.81
Maximum Rotor Diameter(in) 11.75
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
Mount
Piston Specifications
Piston 1 Bore(in) 2.75
Piston 2 Bore(in
Piston 3 Bore(in)
Piston 4 Bore(in)
Total Piston Area (in²) 5.94

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 1/8-27 NPT

Additional Notes

These tight grained, high density aircraft alloy aluminum castings are fully machined, assembled and tested in-house by fully trained technicians at Wilwood to assure top quality and peak performance.


Parts & Accessories

O-Ring Kit 130-4955
Replacement Dust Boot N-A
Replacement Piston 1 200-6633
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




Follow Wilwood on Facebook Follow Wilwood on Twitter see Wilwood Disc Brakes see Wilwood Disc Brakes
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.
     Copyright © 2018 Wilwood Engineering, Inc. - All Rights Reserved