Wilwood 120-16443-RD Forged Dynalite-M Disc Brake Caliper Red Pistons - 4-Piston 1.38in

The Wilwood 120-16443-RD Forged Billet Dynalite-M is a high-performance, 4-piston disc brake caliper engineered as an evolution of Wilwood's renowned Forged Dynalite series. Finished in red anodize, this caliper features 1.38-inch pistons and is designed for .81-inch rotor width, with enhanced outboard clearance geometry that makes it the foundation for Wilwood's Classic Style brake kit lineup.

The Dynalite-M is built using a stress-flow forging process that re-aligns the metal's grain structure to follow the contour of the caliper body, eliminating the grain interruptions that result from machining straight billet stock. Combined with an FEA-generated radial transition design — which removes the steps and shoulders between the piston housing and caliper bridges — the result is a caliper body with exceptional resistance to deflection and separation under load. Structural testing has confirmed reduced fluid volume displacement, which translates directly to increased clamping efficiency and less pedal travel for a firmer, more responsive brake feel.

Key Features:

• Forged billet aluminum construction — starting weight of 2.80 lbs
• 1.38-inch stainless steel pistons — resist corrosion and retard heat transfer from pads
• Designed for .81-inch rotor width with enhanced outboard clearance
• SRS stainless steel bridge plates — prevent pad gouging, extend caliper service life, and eliminate pad rattle
• SRS spring-loading action dampens vibration harmonics that contribute to brake squeal
• High-temperature seals for sustained performance under racing conditions
• Internal fluid passages — no external lines or tubes required
• Four-corner bleed screws — allow mounting in any front, rear, left, or right position
• Red anodized finish for corrosion resistance and distinctive appearance
• Compatible with Wilwood 7112-type brake pads

The Wilwood Forged Dynalite-M is a direct-fit replacement for all standard Wilwood Dynalite and comparable competitive calipers using 5.25-inch centered mounting lugs, making it a versatile upgrade for a wide range of motorsport and performance street applications.