Powerlite Caliper – Part No: 120-8728
Call (805) 388-1188
Powerlite Radial Mount
Prod #: 120-8728
Price: $154.43

Powerlite Radial Mount - Product Summary

Piston Count 4
Piston Area (in²) 2.46
Piston Type Stainless
Dust Boot No
Rotor Dimensions
Rotor Width (in) 0.86
Rotor Diameter(in) 11.00
Pad Dimensions
Pad Area (in²) 5
Pad Volume (in³) 1.8
Duty Rating & Material
Material Aluminum
Weight(Lbs) 2.8
Colors & Finish
Color Ano
Finish Type III Ano

Mount Center(in) 5.08
Mount Position
Mount Side Universal
Mount Type Radial
UPC Number
UPC 889545006346
Product Documents
Product Data Sheet

Click To Download
Installation Instructions

WARNING: Cancer and Reproductive Harm
Applicable to Brake Pads Only

120-8728 - Product Description

Powerlite Radial Mount

The Powerlite four piston radial mount caliper starts at 2.26 pounds with a sleek profile, superior strength, lightweight and durable in higher temperature situations. Easily adapted to a wide range of sports, rally, and off road driving applications.

Strength comes from a combination of process and design. The process of stress-flow forging re-aligns the metal's grain structure within the contour of the caliper body. This eliminates the stresses and interruptions to the internal grain structure that occur when machining a straight block billet. The FEA generated radial transition design eliminates steps and shoulders in the area between the piston housing body and the caliper bridges. Incorporating a radius in this critical area substantially increases resistance to deflection and caliper separation under load.

The Powerlite uses a new 7912 type brake pad that is supported from the top by Quick-clip pad retainers. This eliminates the need for a pad support step in the bottom of the caliper and adds additional clearance for mounting closer to the hub on small wheel and rotor applications. The pad radius matches to rotor diameters between 9.45" (240,0 mm) and 11.75" (298,5 mm), and the caliper fits easily inside many 13.00" (330,2) wheel applications. The Quick-Clips also accommodate easy pad access without caliper removal. Brake pad compounds are available for the full range of sport and competition applications.

Vehicle Applications
Driving Environment Street Rods
Vehicle Sub-Types
Application Duty Medium Duty
Driving Environment Street Performance
Vehicle Sub-Types Domestic
Application Duty Light Duty
Driving Environment Street Performance
Vehicle Sub-Types Import
Application Duty Light Duty
Driving Environment Rally
Vehicle Sub-Types
Application Duty Light Duty
Driving Environment Road Race
Vehicle Sub-Types
Application Duty Light Duty
Driving Environment Drag Racing
Vehicle Sub-Types
Application Duty Medium Duty
Driving Environment Northeast Modified
Vehicle Sub-Types Dirt or Pavement
Application Duty Medium Duty
Driving Environment Open Wheel
Vehicle Sub-Types Sprint, Midget, etc… Dirt or Pavement
Application Duty Medium Duty
Driving Environment Off Road
Vehicle Sub-Types
Application Duty Light Duty

Product Specifications

Rotor Compatibility
Rotor Width (in) 0.86
Maximum Rotor Width (in) 0.86
Minimum Rotor Width (in) 0.79
Maximum Rotor Diameter(in) 11.00
Minimum Rotor Diameter(in) 9.45

Brake Pad Specifications
Brake Pad Type 1 7912
Brake Pad Type 2 N-A
Brake Pad Type 3 N-A
Total Pad Area (in²) 5
Total Pad Volume (in³) 1.8
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 Radial
Mount Side Universal
Mount Center(in) 5.08
Mount Hole Size(in) 0.40
Mount Height(in) 1.56
Inlet Thread Size 1/8-27 NPT

Additional Notes

Every caliper is equipped with Wilwood's SRS stainless steel bridge plates. The SRS plates eliminate the bridge wear caused by pad gouging. The spring-loading action of the SRS plates also eliminates pad rattle and dampens the vibration harmonics that contribute to squeal under braking. Internal fluid passages eliminate the need for external tubes. Four corner bleed screws assure simple and effective air evacuation and allow one caliper to be mounted in of four positions.

Bracket kits are used to install the calipers in place of most lug mount calipers. Radial mounting simplifies service and the bracket kits provide two planes of adjustment for precise alignment over the disc. Bracket kits include the radial mount bracket, studs, locknuts, and caliper alignment shims.

Parts & Accessories

O-Ring Kit 130-2479
Replacement Dust Boot N-A
Replacement Piston 1 200-8730
Replacement Piston 2 200-8730
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 300-5875
Wear Plate R/H 300-5875
Pad Retainer 300-8697
Bleed Screw Kit 220-6069
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 © 2020 Wilwood Engineering, Inc. - All Rights Reserved     
Version: 1.3.15 July 2020