The Wilwood 160-7798-BK is a right-hand, drilled-and-slotted vented brake rotor cast from Spec-37 iron, measuring 13.06 inches across and 1.25 inches thick. The manufacturer describes it as a premium heavy-wall casting, rated for moderate-temperature duty from street driving up to racing. Its 48 curved vanes and black electro-coat finish identify it as part of Wilwood's SRP line. The rotor is listed as unbedded and unbalanced, so plan a proper pad-and-rotor bedding procedure before your first hard stops.
Compared with a plain stock rotor, the value here is the cross-drilled and slotted face, plus material removed from the casting that the manufacturer says reduces rotating and unsprung weight. For sustained hard track use, the manufacturer points buyers toward its HD or GT rotors, so this part is best suited to street performance and occasional track days. Wilwood's application listings cover street rods, domestic and import street performance, rally, road race, and off-road duty. No specific vehicle list was published, so confirm the 12 x 8.75 inch bolt pattern and 8.25 inch hub registration before ordering. Searchers looking for a 13.06 inch Wilwood SRP right-hand drilled rotor, 12-on-8.75 Spec-37 iron rotor, or 48-vane Wilwood brake rotor will find this part's exact configuration here.
The manufacturer lists this part as a right-hand (R/H) rotor. The left-hand version is catalogued separately as 160-7799-BK.
The manufacturer lists it as neither bedded nor balanced, so bedding the pads and rotors per the pad manufacturer's procedure is advisable before aggressive use.
