Wilwood GT-Slotted 14-Inch Front Conversion with Red AERO6 Calipers for Listed Corvette, XLR and Ridetech Hub Spindles

Red AERO6 calipers, GT rotors and BP-20 pads form this front kit. Older listed GM vehicles require the specified Ridetech hub-spindle conversion. The manufacturer, Wilwood Engineering, was established by Bill Wood in 1977 and is based in Camarillo, California. It designs and builds disc brake systems with a range covering calipers, brake rotors, master cylinders, valves, fittings and brake lines. Motorsport, street-performance and specialized applications require components selected for the complete braking system.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-15705-R
• Kit classification: Front Brake Kits - Street Performance
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• Rotor Outside Diameter: 14.00 in; 355.6 mm
• Rotor Thickness: 1.25 in; 31.75 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
• Rotor-hat mounting-hole clearance diameter (not stud thread): 0.520 in; 13.21 mm
• 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): 0.290 in
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: No; separate front references: C5 220-8176, C6 220-9100; converted applications require verified routing/220-12168 selection
• Minimum wheel diameter guidance; verify clearance drawing: 18 in; 457.2 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: No
• 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: AERO6
• Pad compound: BP-20

Fitment & Compatibility

Red AERO6 calipers and slotted 14.00 × 1.25-inch Spec37 rotors use BP-20 pads in this front package. The table separates original C5/C6 Corvette applications for 1997–2013 and Cadillac XLR for 2004–2009 from selected older GM vehicles. Those older 1962–1982 rows require the specified Ridetech hub-spindle conversion; they are not claims for the car's original spindle. Verify each listed year, trim and hub interface before ordering. Flexlines are extra: use the C5 front reference 220-8176 or C6 front reference 220-9100 where applicable. The converted-chassis reference 220-12168 requires actual fitting, route and length checks rather than automatic transfer from a donor-hub application. Separate aluminum hats are supplied; their mounting dimensions do not establish wheel clearance. Match the wheel drawing, using the nominal 18-inch minimum diameter only as guidance.

Listed models: Chevy II; Corvette; Skylark; Special; Sportwagon; Chevelle; El Camino; 442; Cutlass; F85; Vista Cruiser; Beaumont; GTO; LeMans; Tempest; Gran Sport; Camaro; Cutlass Supreme; Firebird; GS 350; GS 400; Nova; GS; GS 455; Sprint; Ventura; Apollo; Omega; XLR. See the supplied table below for each year, submodel and equipment condition.

Wilwood product specifications · Installation instructions

Our team at PMB Performance has over 20 years of parts and fitment experience. The existing component number and brake-system details help us check the match.

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