Wilwood Front Dynalite 12.19-Inch Brake & Hub Kit for GM G-Body/S-Series/Isuzu Hombre (1978–2003), Black

Wilwood pairs black four-piston Dynalite calipers with plain-face 12.19-inch vented rotors in this front hub conversion. The applications cover specified GM passenger cars and rear-drive compact trucks, plus listed Isuzu Hombre configurations. Original disc spindles are retained after machining, so this is not an installation that leaves the factory steering-arm/spindle casting untouched. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings, and brake lines for motorsport, street-performance, and specialized applications.

Technical Details

• Manufacturer part number: 140-12297
• Type: Forged Dynalite Big Brake Front Brake Kit (Hub)
• Calipers: Forged Dynalite Internal; 4 pistons per caliper; Black Powder Coat.
• Caliper bore sizes: 1.75, 1.75 inches. Piston type: Stainless.
• Included pad compound: BP-10.
• Rotors: 12.19-inch diameter × 0.81-inch thickness; Plain Face; Iron; Plain surface; 32 vanes.
• Wheel mounting change from OE: .00 inches per side.
• Replacement hubs: Hub - Vented Rotor Offset; Aluminum; Bare.
• Wheel bolt circles: 5 x 4.50; 5 x 4.75 inches.
• Included: paired calipers, pads, rotors, mounting brackets and assembly hardware, replacement hubs.
• Hydraulic lines and fittings selected separately. No master cylinder, booster or spindles are supplied.
• Conditional wheel screening size: 15 inches. Use the installation clearance diagram to verify the actual barrel and spoke profile.
• Wheel-contact support requirement: if the wheel contact surface overhangs the hub face, use the specified 6.60-inch-diameter × 0.20-inch-thick steel spacer between hub and wheel. The spacer is sold separately.
• For stamped steel wheels whose contact area does not overhang the hub, Wilwood recommends the separate 6.15-inch-diameter × 0.09-inch-thick hub shield to protect the hub face; this is distinct from the required overhang-support spacer.

Fitment & Compatibility

DS877 requires qualified machining of both original steering-arm/spindle assemblies, including drilling, tapping and removal of interfering caliper ears. Verify the exact two-wheel-drive or rear-drive entry for truck applications. The nominal 15-inch wheel listing is conditional; compare the installed caliper envelope with the actual wheel. Alternative hub bolt patterns do not remove the need to check stud engagement, wheel seating and hydraulic hose routing.

Match the individual model, year, submodel and brake configuration in the fitment table below.

Wilwood installation documents: Installation instructions.

PMB Performance has over 20 years of brake-system experience. Contact us with your vehicle details and installed brake hardware for help confirming the correct arrangement.

California Proposition 65 warning, brake pads only: 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.