Wilwood 120-6815 Forged Dynalite 4-Piston Disc Brake Caliper 1.75in Bore

The Wilwood Forged Dynalite Caliper (120-6815) is a high-performance, 4-piston fixed caliper widely used across motorsports and performance street applications. Featuring a 1.75-inch piston bore and designed for 1.00-inch rotor width, it serves as the foundation caliper in the majority of Wilwood's Bolt-On Disc Brake Kits.

Forged Construction & FEA-Optimized Design:

• Stress-flow forging process re-aligns the metal's grain structure within the caliper body contour, eliminating the grain interruptions that occur when machining a straight billet block
• FEA-generated radial transition design removes steps and shoulders between the piston housing body and caliper bridges, substantially increasing resistance to deflection and caliper separation under load
• Structural deflection and fluid volume displacement testing confirms superior performance over all comparable caliper styles in this size class
• Reduced deflection and decreased fluid volume displacement translate to improved clamping efficiency, less pedal travel, and a firmer, taller pedal feel
• Starting weight of just 2.80 lbs — among the lightest in class

Standard Wilwood Performance Features:

• SRS stainless steel bridge plates — eliminate pad gouging wear on the bridge, extend caliper service life, eliminate pad rattle, and dampen vibration harmonics that contribute to brake squeal
• Stainless steel pistons with high-temperature seals to prevent corrosion and retard heat transfer from brake pads
• Internal fluid passages eliminate the need for external cross-over tubes
• Four-corner bleed screws allow complete air evacuation and enable a single caliper to be mounted in any front, rear, left, or right position
• Black anodized finish resists corrosion and provides a clean, high-tech appearance

Compatibility & Brake Pad Information:

• Direct replacement for all Wilwood Dynalite and competitive brand calipers with 5.25-inch centered mounting lugs
• Uses the standard Wilwood 7112-series brake pad, compatible with the full range of Wilwood pad compounds to match brake response and heat range to any application
• Sold individually