The Wilwood 160-0525 is a 12.00-inch, 0.35-inch-thick solid drilled steel rotor with a black electro-coat finish, built for open-wheel sprint and midget racing. Wilwood's steel rotors use a special alloy and proprietary manufacturing processes that give high resistance to thermal distortion with excellent friction and wear characteristics against the pads. The manufacturer's listing gives drag and dirt racing as suitable applications, and lists sprint and midget as vehicle sub-types.
This is a competition-only part, not a stock replacement. The manufacturer states not for street use, so it suits a dedicated race car where a lighter, drilled steel face is the goal, with the rotor weighing in at 5.40 lbs. Because bedding in a new rotor takes real track time, Wilwood notes that getting track time for a proper pad and rotor bedding session can be difficult and offers factory dyno-bedded pads and rotors. Teams without a practice schedule can weigh that option against a generic rotor that arrives unbedded.
No. The manufacturer lists this rotor as not for street use, so it is intended for competition only.
The manufacturer's install sheets recommend safety wiring the bolts when cross-drilled bolts come with the rotor bolt kit, using 0.032-inch stainless safety wire.
Wilwood's install sheets state that installation should only be performed by people experienced with disc brake systems, so this is best suited to a builder comfortable with racing hubs and brakes. Gather a torque wrench, red Loctite 271 for the bolt threads, and 0.032-inch stainless safety wire. Per the manufacturer's t-nut rotor bolt instructions, place the adapter with its t-notches facing away from the rotor lugs, insert the rotor bolts one at a time through the washer and rotor lugs after applying red Loctite 271 to the threads, then finger tighten until all bolts and t-nuts are threaded together, and torque the bolts in an alternating sequence. Watch the axle clamp placement: the manufacturer says the axle clamp should be positioned inside of the rotor. Finally, slide the rotor and adapter assembly onto the axle and confirm the rotor is centered in the caliper before final torquing.
