Wilwood 120-8728 Powerlite Radial Mount Brake Caliper - 4-Piston

The Wilwood Powerlite four-piston radial mount caliper delivers exceptional performance in a lightweight, compact package starting at just 2.26 pounds. Engineered for sports, rally, and off-road applications, this caliper combines stress-flow forged construction with advanced FEA-optimized design for superior strength and heat resistance.

Advanced Construction & Design:

• Stress-flow forging process realigns metal grain structure within the caliper body contours, eliminating machining stresses and enhancing structural integrity
• FEA-generated radial transition design eliminates stress-concentrating steps between piston housing and bridges
• Radiused transitions in critical areas substantially increase deflection resistance and prevent caliper separation under load
• Internal fluid passages eliminate external brake line tubes for cleaner installation

Brake Pad System:

• Uses Type 7912 brake pads with top-mounted Quick-Clip retainers
• Quick-Clip design allows pad access and replacement without caliper removal
• Eliminates bottom pad support step for increased clearance on small wheel applications
• Pad radius compatible with rotor diameters from 9.45" (240mm) to 11.75" (298.5mm)
• Fits inside many 13" wheel applications
• Full range of pad compounds available for sport and competition use

Innovative Features:

• SRS stainless steel bridge plates eliminate bridge wear from pad gouging
• Spring-loaded SRS plates eliminate pad rattle and dampen vibration harmonics that cause brake squeal
• Four corner bleed screws enable simple air evacuation and allow mounting in four different positions
• Radial mounting design simplifies service and maintenance

Installation:

• Bracket kits available to replace most lug mount calipers
• Radial mount brackets provide two planes of adjustment for precise disc alignment
• Bracket kits include radial mount bracket, mounting studs, locknuts, and alignment shims

Ideal for racers and performance enthusiasts demanding lightweight, high-strength braking components that perform consistently in high-temperature environments.