Wilwood Left-Hand SRP Brake Ring, 12.19-Inch Diameter with Eight-on-7-Inch Flange

This left-side SRP ring combines the 12.19-inch working diameter with the eight-hole 7.00-inch attachment layout. Its black electro-coated iron casting is 0.81 inch thick and carries a directional drilled-and-slotted surface. Founded by Bill Wood in 1977, Wilwood designs and manufactures disc brake systems in Camarillo, California. Its range includes calipers, rotors, master cylinders, valves, fittings and lines for motorsport, street performance and specialized applications. Rotor choice belongs within that complete system: the caliper, pad, mounting hardware and intended duty must work together.

Technical Details

• Manufacturer part number: 160-7104-BK
• Quantity: One rotor; not an axle pair
• Outside diameter: 12.19 inches
• Nominal thickness: 0.81 inches
• Rotor material: Iron
• Construction: 32 vanes
• Friction surface: SRP Drilled & Slotted
• Finish: Black Electro Coat
• Approximate weight: 8.80 lb
• Factory burnished: No
• Dynamically balanced: No
• Installation orientation: Left-hand
• Rotor attachment pattern: 8 x 7.00 inches
• Rotor mounting hole / thread: 0.326 inches
• Registration / lug inside diameter: 6.38 inches
• Far-side inside diameter: 8.56 inches
• Opposite-hand companion rotor: 160-7103-BK (sold separately)
• Intended use and restrictions: For racing durability, Wilwood recommends comparable ULHP or GT rotors. Suitable for moderate-temperature racing and street use. Medium-weight castings.

The hat or hub, fasteners, caliper and pads are not included.

Fitment & Compatibility

Use the 0.326-inch mounting holes and 8.56-inch far-side clearance to confirm the complete connection. For maximum durability in racing, consider the comparable ULHP or GT construction recommended by Wilwood.

Wilwood product specifications · Rotor dimension diagram

Put PMB Performance’s 20-plus years of brake knowledge to work when matching this part to your build. We can help review the dimensions and application requirements.