Wilwood Front Red Six-Piston Hub Kit for ProSpindle, 14-Inch GT Slotted Rotors

This red Narrow Superlite 6R kit gives the supported ProSpindle front end a 14-inch GT slotted rotor package. Six-piston calipers work with BP10 pads and the included hubs, with the wheel template needed to confirm both radial and spoke clearance. Bill Wood’s 1977 founding of Wilwood Engineering began a business focused on designing and manufacturing disc brake systems. Based in Camarillo, California, Wilwood serves motorsport, specialized applications and street-performance vehicles with calipers, brake rotors, valves, fittings, brake lines and master cylinders. Select each component for the requirements of the whole system.

Technical Details

• Manufacturer part number: 140-9920-R
• 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: 72 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
• Finish: Red Powder Coat
• Rotors: 14.00 x 1.10 inches, vented Spec-37 iron; GT Slotted faces
• Caliper mounting: radial; hydraulic inlet 1/8-27 NPT
• Included friction: BP10 pads
• Wheel-diameter guide: 18 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

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.

The installed ProSpindle governs the mounting procedure. Verify its height, steering-arm orientation and available wheel space; the supplied dual-pattern hubs do not make this a universal front brake conversion. 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.

For help planning the installation, PMB Performance draws on more than 20 years of experience with brake components. Send the relevant spindle, rear-axle and wheel specifications for a compatibility review.

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.