Wilwood Dynalite Internal Brake Caliper, Black, 10.00–13.06-Inch Rotor Diameter / 1.10-Inch Width

Match this black Wilwood Forged Dynalite Internal to a brake assembly requiring 1.10-inch rotor width and 1.75-inch pistons. The 4-piston caliper uses 5.25-inch lug mounting rather than a vehicle-specific adapter supplied as a kit. Wilwood Engineering’s disc brake range includes calipers, rotors, master cylinders, valves, fittings and brake lines. Bill Wood founded the company in 1977 in California; it is based in Camarillo and serves motorsport, street-performance and specialized brake applications.

Technical Details

• Manufacturer part number: 120-13846-BK
• Mounting: universal side configuration; Lug; 5.25-inch centers; 0.39-inch mounting holes
• Mount height: 2.03 inches
• Rotor width: 1.10-inch nominal; 1.05–1.13-inch permitted range
• Rotor diameter range: 10.00–13.06 inches
• Pad shape: Wilwood type 7112; compound selected separately
• Piston arrangement: 4 pistons; 1.75-inch bores; stainless steel
• Hydraulic piston area: 4.80 square inches, as specified by Wilwood
• Body and finish: Forged aluminum; Black Powder Coat
• Fluid inlet: 1/8-27 NPT
• Dust boots: No
• Component: Wilwood Forged Dynalite Internal; one caliper

This four-piston Dynalite uses internal fluid transfer in a spacerless body. Its 5.25-inch mounting pattern is only one compatibility dimension: rotor position, body clearance and hydraulic area also need to agree.

Fitment & Compatibility

Identify the existing mounting bracket and compare its caliper centerline, hole spacing and radial position. Verify the piston configuration against the hydraulic system specification.

This listing covers one caliper. Match the brake pads, rotor, hose and mounting arrangement to the complete brake system.

PMB Performance’s team has over 20 years of experience with brake components and fitment. We can help review this caliper against the dimensions and hydraulic requirements of your brake system.