Wilwood XRD SA Scalloped Lug Drive Dynamic Rear Drag Brake Kit
Wilwood's new Forged XRD Lug-Drive Dynamic Stainless Super Alloy Rotor Brake Kits are especially beneficial to cars that rely heavily on the rear brakes for stopping and any other high speed, heavy weight cars that generate above average rear brake heat. The lug-drive rotor mounting system eliminates the rotor bolts and instead, a large single internal snap-ring retains the rotor in the hat, making assembly and installation literally a snap. This system allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Kits are available in two rotor diameters: A traditional 11.44โ diameter and a smaller 11.25โ diameter for clearance with bead lock rims. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. Spring-loaded, replaceable stainless steel inserts in each lug-drive slot protect the aluminum hat from wear that would otherwise be caused by loading of the stainless steel rotor against the hat when brake torque is applied. Kits are available in Single and Dual caliper configurations.
Documents
What's Included
Wilwood's application data lists these main components for this kit:
- Calipers: Forged XRD Lug Mount
- Rotors: Drilled Super Alloy, 11.25" x 0.35"
- Pads: pad type 7812, BP-28 compound, 150-28-7812K
Specifications
Fitment
Wilwood's application data for this kit.
| Minimum wheel diameter | 15" |
| Position | Rear Kit |
| Years | Make | Model | Details |
|---|---|---|---|
| 1973-1974 | Buick | Apollo | w/ Ridetech Hub Spindle |
| 1973-1974 | Buick | Apollo | w/ Ridetech Pin Spindle |
| 1967-1969 | Chevrolet | Camaro | w/ Ridetech Hub Spindle |
| 1967-1969 | Chevrolet | Camaro | w/ Ridetech Pin Spindle |
| 1964-1968 | Chevrolet | Chevelle | w/ Ridetech Hub Spindle |
| 1964-1969 | Chevrolet | Chevelle | w/ Ridetech Pin Spindle |
| 1964 | Oldsmobile | 442 | w/ Ridetech Hub Spindle |
| 1970 | Oldsmobile | 442 | w/ Ridetech Pin Spindle |
| 1964-1969 | Pontiac | Beaumont | w/ Ridetech Hub Spindle |
| 1964-1969 | Pontiac | Beaumont | w/ Ridetech Pin Spindle |
Parts in This Kit and Recommended Lines
Frequently Asked Questions
Tap a question to see the answer.
What vehicles does this kit fit?
See the Fitment section above for Wilwood's application list for this kit.
What is the smallest wheel this kit fits?
Wilwood lists a minimum wheel diameter of 15".
Which wheel bolt pattern does it use?
Wilwood lists 5 X 4.5" and 5 X 4.75" and 5 X 5".
What replacement pads does it take?
Pad type 7812. The kit is listed with BP-28 pads, 150-28-7812K.
How much does it weigh?
Wilwood lists the package weight at 25 lb.
Are installation instructions available?
Yes. Wilwood's installation instructions are in the Documents section above.
Not sure this is the right kit for your vehicle? Send us a message.
Always confirm your vehicle, spindles and wheel clearance before you order.
WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.