Wilwood GT-Slotted Front Rotor and Hub Conversion for GM/Ridetech Pin Spindles with Red Calipers, 14-Inch Rotors

Red dust-sealed calipers and 14-inch GT rotors suit listed spindles. Review anchor-hole machining, the wheel-face change and separate hoses. Wilwood Engineering’s work covers the design and manufacture of disc brake systems for motorsport, street-performance and specialized applications. Bill Wood founded the company in 1977 in a business now based in Camarillo, California. Its calipers, master cylinders, brake rotors, brake lines, valves and fittings must be selected around the complete system.

Red calipers and GT slotted 14-inch rotors make this the version for a red-caliper car that also sees hard driving. The calipers are dust-sealed, and the slotted-only rotors stand up to track heat better than drilled ones. You'll need 18-inch or larger wheels. Drilled-and-slotted rotors with red calipers are 140-15409-DR, and the black GT kit is 140-15409.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-15409-R
• Kit classification: Front Brake Kits - Street Performance
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• Minimum wheel diameter guidance; verify clearance drawing: 18 in; 457.2 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: Yes
• Rotor Outside Diameter: 14.00 in; 355.6 mm
• Rotor Thickness: 1.10 in; 27.94 mm
• Rotor Material: Spec-37 Iron
• Surface Type: GT Slotted
• Rotor construction: Vented
• Bolt Circle Diameter: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm
• Included wheel-stud thread: 1/2-20 thread
• Rotor surface finish: Black Electro Coat
• Rotor vane / construction reference: 72 CV
• Hat material: Aluminum
• Hat finish: Black E-Coat
• Hat offset (not axle-flange offset): 1.750 in
• Pistons per service caliper: 6
• Service-caliper piston material: Stainless
• Service-caliper mounting: Radial
• Caliper body construction: Forged aluminum
• Caliper Color: Red
• Caliper Finish: Red Powder Coat
• Caliper Inlet Port Diameter: 1/8-27 NPT
• Caliper family: dust-sealed Superlite 6R
• Pad compound: BP-10
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: No

Fitment & Compatibility

Compatibility depends on the actual spindle arrangement in the table. Some entries use the specified original GM disc or drum spindle; other GM, Ford and Mercury vehicles require the listed Ridetech pin-spindle conversion. Do not infer original-spindle compatibility from the broad model list. DS-1297 calls out machining on applicable spindles: upper anchor-hole drilling/tapping and, where directed, lower spindle/steering-arm hole enlargement, plus caliper-ear clearance. Have the relevant spindle inspected and machined by a qualified professional. The kit includes aluminum hubs, bearings, seals and 1/2-20 studs, with dual 5 × 4.50/4.75-inch wheel patterns and a 0.38-inch outward wheel-face change. Hoses are separate; the 220-7056 reference requires the correct length and fittings for the actual vehicle. Use the wheel template with the nominal 18-inch minimum guidance.

Listed models: Falcon; Comet; Chevy II; Corvette; Skylark; Special; Sportwagon; Chevelle; El Camino; Malibu; Mustang; 442; Cutlass; F85; Vista Cruiser; Acadian; Beaumont; GTO; LeMans; Tempest; Gran Sport; F-100; Camaro; Cutlass Supreme; Firebird; GS 350; GS 400; Nova; Grand Prix; GS; GS 455; Monte Carlo; Sprint; Ventura; Apollo; Omega. See the supplied table below for each year, submodel and equipment condition.

Wilwood product specifications · Installation instructions

PMB Performance brings over 20 years of experience to brake-component selection. Provide the actual hardware specification when the brake system has been modified.

Manufacturer warning — brake pads only: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.