Wilwood 120-8729 Powerlite Radial Mount Brake Caliper - 4-Piston

The Wilwood Powerlite four-piston radial mount brake caliper delivers professional-grade braking performance in an ultra-lightweight package starting at just 2.26 pounds. Engineered for sports, rally, and off-road applications, this caliper combines a sleek low-profile design with exceptional strength and heat resistance for demanding driving conditions.

Advanced Forging and Design:

• Stress-flow forged construction re-aligns metal grain structure within the caliper body contours, eliminating internal stresses found in traditional billet machining
• FEA-generated radial transition design removes steps and shoulders between piston housing and caliper bridges
• Radiused transitions in critical load areas substantially increase resistance to deflection and caliper separation under heavy braking

Innovative Pad Retention System:

• Uses Wilwood type 7912 brake pads with top-mounted Quick-Clip retainers
• Eliminates bottom pad support step, providing extra clearance for tight mounting situations near the hub
• Allows pad access and replacement without caliper removal
• Pad radius compatible with rotor diameters from 9.45" (240mm) to 11.75" (298.5mm)
• Fits inside many 13" wheel applications

Premium Components and Features:

• SRS stainless steel bridge plates prevent bridge wear from pad contact and eliminate pad rattle
• Spring-loaded SRS plates dampen vibration harmonics that cause brake squeal
• Internal fluid passages eliminate external brake line tubes for cleaner installation
• Four corner bleed screws enable simple air evacuation and allow mounting in four different positions
• Radial mounting system simplifies service and provides two planes of adjustment for precise disc alignment

Bracket kits are available separately to adapt this caliper to replace most lug mount calipers. Each bracket kit includes the radial mount bracket, studs, locknuts, and caliper alignment shims. Brake pad compounds are available for the complete range of sport and competition applications.