SKU: 160-16979 | UPC: 889545107173
Wilwood 11.25 x 0.25 8 on 7.18 Snap Ring Drilled Steel Rotor for 1999-2010 Workhorse Drag Race Trucks Custom Builds
This Wilwood drilled steel brake rotor ring measures 11.25 inches in diameter by 0.25 inches thick with an 8 on 7.18 inch bolt pattern and snap ring groove for 2-piece assemblies. It fits vehicles and chassis with matching 8×7.18 inch wheel bolt pattern such as 1999-2010 Workhorse W20/W22 motorhomes drag race trucks and custom GM Ford medium heavy duty truck builds. Drilled holes improve cooling and bite while steel construction handles repeated hard stops without cracking for reliable performance in track or towing conditions.
Key Features
- Drilled Friction Surface: Channels heat away faster and clears water or debris for reliable grip in wet or high heat track conditions
- Steel Alloy Material: Delivers higher thermal capacity than cast iron to endure extreme abuse in drag racing or towing
- 0.25 Inch Thickness: Cuts unsprung weight versus thicker rotors for sharper throttle response and acceleration
- Snap Ring Groove Design: Locks securely to aluminum hats in floating 2-piece setups reducing noise and allowing expansion
- Precision 8×7.18 Bolt Pattern: Direct bolt-on for compatible hubs ensuring even contact and vibration-free operation
Product Notes
- Pair with Wilwood snap ring style hats and matching calipers for complete 2-piece rear brake upgrade
- Bed-in procedure required after installation for optimal friction and longevity
- Packaged to prevent damage during transit with protective wrapping
Installation Notes
- Professional installation recommended.
- Verify hub register and stud length match 7.18 inch lug ID before mounting
- Compatible with Wilwood Superlite or Forged series calipers and snap ring hats
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Custom Builds | Various | Drag Race Trucks | 8×7.18 Lug Pattern Rear |
| 1999-2010 | Workhorse | W20/W22 Chassis | Motorhome Heavy Duty |
| Custom | GM/Ford | Medium Duty Trucks | 8×7.18 Bolt Circle Builds |
Why Choose Wilwood?
- Trusted by racers for durable brake components in demanding environments
- Made with high iron steel formula proven to resist fade and wear
- Exact tolerances from CNC machining ensure balance and consistent performance
Frequently Asked Questions
- Q: What bolt pattern does this rotor support?
A: 8 studs on 7.18 inch diameter circle common on drag race rear ends and select heavy duty chassis like Workhorse motorhome platforms - Q: Is the material cast iron or steel?
A: High iron content steel alloy provides better crack resistance and thermal properties for track or heavy towing use - Q: Does installation require special tools or hardware?
A: Uses snap ring for hat attachment no special tools beyond standard brake service plus compatible caliper bracket kit
Shipping & Handling
- Method: Ground
- Availability: In stock – ships same or next business day
- Packaging: 13 x 13 x 2 inches protective box
- Weight: 7.4 lbs
