Steel Rotors – Part No: 160-4766
Call (805) 388-1188
Drilled Steel Dynamic Mount Rotor
Prod #: 160-4766
Price: $415.29

Drilled Steel Dynamic Mount Rotor – Product Summary
Rotor No: 160-4766
Wilwood Drilled Steel Dynamic Mount Rotor Wilwood Drilled Steel Dynamic Mount Rotor Zoom Image

Rotor Dimension Diagram
Drilled Steel Dynamic Mount Rotor Dimension Diagram Drilled Steel Dynamic Mount Rotor Dimension Diagram Zoom Image

Rotor Dimensions
Width (in) 0.38
Diameter (in) 12.90
Mount Side
Rotor Design
Material Steel
Vane Count Solid
Weight(Lbs) 5.70
Rotor Style & Finish
Type Solid
Style Drilled
Surface Finish Black Electro Coat
Rotor Upgrades
Bedded No
Balanced No
UPC Number
UPC 889545039641
160-4766 – Product Description

Drilled Steel Dynamic Mount Rotor

Steel rotors have applications in all types of motorsports. Steel rotors provide a durable lightweight option in applications where sustained temperatures remain in the low to moderate range, and high heat spikes are only observed on an intermittent basis. This could be anything from a hard stopping drag race car at the end of a quarter mile, or a high speed stock car coming in from a qualifier at a super speedway. Steel rotors can also be found in lighter weight open wheel cars such as sprints and modifieds, and a variety of light weight, open wheel road course racers. A special alloy and proprietary manufacturing processes give these rotors high resistance to thermal distortion with excellent friction and wear characteristics against the pads.

Performance Characteristics
• Suitable applications: Drag / Dirt racing

• Not for street use.

Vehicle Applications
Driving Environment Stock Cars
Vehicle Sub-Types NASCAR, BGN, CTS, ARCA, etc...
Application Duty Light Duty
Driving Environment Drag Racing
Vehicle Sub-Types
Application Duty Heavy Duty
Driving Environment Industrial
Vehicle Sub-Types
Application Duty Light Duty

Additional Rotor Dimensions

Rotor Bolt Circle (in) 12 x 8.75
Rotor Mount Hole Size (in)
Lug ID / Registration (in) 8.25
Far Side Inside Diameter (in)
Offset Dimension (in)

Shoe Inside Dimension (in)
Clearance Inside Diameter (in)
Wheel Bolt Circle (in
Stud Diameter (in)
Face Thickness (in)

Additional Notes

Dynamic mounting is the most effective method of eliminating all types of thermal stress and distortion in steel rotor applications. These rotors are machined with mounting slots that are used with special t-nuts and bolt kits. This mounting system allows the rotor to expand and contract independently of the mounting hat or hub as the rotor goes through temperature changes. This eliminates all strain or bind at the mounting points. The rotors run truer, last longer, and all undo stress on the hats or hubs is eliminated. Dynamic mounting is preferred in all applications where temporary, but extreme temperature spikes may cause high expansion rates in the steel.

Wilwood also offers slotted dynamic mount hats and plates that are used to provide "float" with a standard hole mount rotor, but the rotors in this category are machined for use on "fixed" mounts that require the "float" to be placed within the rotor itself.

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: 3.04 May 22, 2023