Wilwood Front Black Six-Piston ProSpindle Kit, 12.88-Inch Drilled/Slotted Rotors

This ProSpindle package uses black Narrow Superlite 6R calipers with 12.88-inch drilled-and-slotted rotors. Six-piston radial mounting and the included hub-and-hat components define the front brake assembly, while wheel fit must account for both caliper clearance and the outward hub position. Since Bill Wood established Wilwood Engineering in 1977, its work has centered on the design and manufacture of disc brake systems. The Camarillo, California company supplies calipers and brake rotors alongside master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized uses, with each component matched to the complete system.

Technical Details

• Manufacturer part number: 140-9919-D
• Finish: Black Powder Coat
• Rotors: 12.88 x 1.10 inches, vented Spec-37 iron; SRP Drilled & Slotted faces
• Caliper mounting: radial; hydraulic inlet 1/8-27 NPT
• Included friction: BP10 pads
• Wheel-diameter guide: 17 inches; actual wheel must pass the manufacturer clearance template
• Supported spindles: Wilwood standard-height ProSpindle 830-10832 or two-inch-drop ProSpindle 830-9807; spindles sold separately
• Included hub patterns: 5 x 4.50 inches (5 x 114.3 mm) and 5 x 4.75 inches (5 x 120.65 mm); 1/2-20 wheel studs
• Published OE hub offset: +0.68 inch per side; account for outward wheel movement
• Included: hubs, bearings, seals, dust caps and brake mounting hardware; separate rotor hats included
• Not included: spindles, master cylinder, booster or brake flexlines
• Rotor ventilation: 48 curved vanes
• Position and package: front brake and hub kit; one kit services both sides
• Calipers: Forged Narrow Superlite 6R, 6 pistons, forged aluminum bodies with stainless-steel pistons

Fitment & Compatibility

Compare the intended wheel with the complete clearance diagram, allowing for the caliper’s radial and spoke envelope. Brake lines are separate; original rubber hoses do not adapt directly. Select the correct 1/8-27 NPT caliper connection and flexline length, and check for interference through suspension travel and full steering movement.

This is a Wilwood ProSpindle brake assembly. The standard-height and two-inch-drop versions use different mounting instructions, so the spindle and steering-arm hardware should be identified before the hub and caliper are assembled. Compatible spindle part numbers are 830-10832 for standard height and 830-9807 for the two-inch drop. The published +0.68-inch hub offset is per side and must be included in the wheel/fender clearance assessment.

Wilwood kit specifications · Manufacturer installation instructions and wheel-clearance diagram.

PMB Performance has more than 20 years of brake-system experience. Share the spindle or rear-brake configuration and wheel details if you need help confirming this kit before ordering.

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.