Wilwood Forged Narrow Dynalite Caliper, 1.75-Inch Bores / 0.38-Inch Rotor Width / Type III

The Forged Narrow Dynalite is a compact four-piston caliper for a nominal 0.38-inch rotor width. This anodized version uses four 1.75-inch stainless pistons and a 3.50-inch lug pattern. Wilwood Engineering, founded by Bill Wood in 1977, is based in Camarillo, California. The company makes and designs disc brake components and systems for motorsport, street-performance and specialized applications, including calipers, brake rotors, master cylinders, valves, fittings and brake lines.

Technical Details

• Manufacturer part number: 120-11571. Component: Forged Narrow Dynalite caliper.
• Supply: one brake caliper, not a complete axle brake kit. Match the mating rotor, pads, bracket and connection hardware to the installation.
• 4 stainless steel pistons with 1.75-inch bore diameter. The specified effective area is 4.80 sq in.
• Caliper weight: approximately 4.1 lb.
• Piston dust boots: not fitted.
• Brake pad profile 7816; 7216; select friction material for the actual operating conditions.
• The rotor channel is specified for 0.38-inch nominal width. Rotor outside diameter: 11.75 to 12.72 inches. Specified rotor-width limits: 0.25–0.38 inch.
• 3.50-inch lug mounting pattern, universal; mounting height 2.85 inches and hole size 0.45 inch.
• Hydraulic inlet thread: 1/8-27 NPT. Use a fitting with the correct thread and sealing seat.
• Type III anodize finish on a forged aluminum caliper body.

Fitment & Compatibility

Match the thin rotor and bracket offset before replacing an existing narrow caliper. Verify the 11.75–12.72-inch diameter envelope and 7816 or 7216 pad geometry together.

Ask PMB Performance to check the complete brake arrangement before ordering. Our team brings over 20 years of experience; photographs and measured bracket and rotor dimensions make that check more useful.