Wilwood Rear Plain HP Rotor, 12.19 x 0.81-inch, 5 x 5.50-inch Clearance Pattern

This rear casting combines the 12.19-inch service ring with a 7.24-inch internal parking drum. Its five-on-5.50-inch clearance pattern and shallow 1.91-inch offset must match the axle flange and the conversion's caliper bracket geometry. Wilwood Engineering's disc brake systems are designed and manufactured for motorsport, street-performance and specialized applications. Founded in 1977 by Bill Wood and based in Camarillo, California, the company makes calipers, brake rotors, master cylinders, valves, fittings and brake lines. These individual parts must be chosen to work within the complete braking system.

Technical Details

• Manufacturer part number: 160-13327
• Friction dimensions: 12.19 inches diameter x 0.81 inches wide
• Construction: Iron
• Surface treatment: Plain Face; Plain
• Cooling layout: 32 vanes; straight
• Mounting direction: Non-directional
• Supplied preparation: Balanced: no; factory burnished: no
• Hat wheel-stud clearance pattern: 5 x 5.50 inches
• Stud clearance-hole sizes: 0.64 inches
• Center registration: 3.06 inches
• Far-side inside diameter: 8.38 inches
• Hat offset: 1.910 inches
• Internal parking-drum diameter: 7.24 inches
• Inside clearance diameter: 7.16 inches
• Hat mounting-face thickness: 0.18 inches
• Approximate weight: 14.40 lb
• Quantity: one rotor with integral hat; separate hub, pads, calipers, mounting hardware and any parking-brake mechanism are not included

Fitment & Compatibility

For the matching rear disc/drum brake conversion with five-on-5.50-inch axle studs, 1.91-inch offset and a 7.24-inch parking drum. Optional register-ring adapters for specified 2.00–2.86-inch axle centers fit the 3.06-inch rotor register and are selected separately.

Manufacturer reference: Wilwood rotor specifications

PMB Performance brings over 20 years of brake and parts experience to component selection. Send the existing rotor identification and brake-kit details if you need help confirming the match.