Wilwood 140-16859 AERO6R/ST Front Road Race Big Brake Kit Slotted Gray

The Wilwood 140-16859 is a complete front big brake kit engineered specifically for dedicated road race competition. Built around Wilwood's high-performance AERO6R/ST six-piston calipers, this kit delivers the serious stopping power and thermal endurance demanded by unrestricted road racing environments.

The AERO6R/ST calipers feature a forged aluminum body with a Type III Mil-Spec hard anodized finish in a medium gray color — providing superior corrosion resistance and durability under extreme race conditions. The thick-pad design accommodates 20mm brake pads for extended pad life and greater endurance during long stints on track.

Key Features:

• AERO6R/ST six-piston calipers with forged aluminum body construction
• Type III Mil-Spec hard anodized finish in medium gray for durability and heat resistance
• 20mm thick pad design for increased pad endurance and extended service intervals
• Thermlock pistons resist brake fade and reduce heat transfer to fluid and seals
• 14.00" slotted surface rotors with high-cooling GT directional vane design
• Spec37 alloy GT72 rotors dynamically mounted with a single snap ring to allow thermal expansion
• Forged aluminum lug-drive hats reduce rotational and unsprung weight
• Radial mount brackets secure the caliper to the spindle in the OE location without modification
• Includes high-temperature, high-friction race compound brake pads
• All premium-grade fasteners and caliper mounting hardware included

This kit is purpose-built for road racing, combining race-grade components into a complete, bolt-on front brake system. The dynamically mounted rotor design allows for thermal expansion, while the AERO6R/ST caliper's radial mount architecture provides optimal rigidity and pedal feel under sustained heavy braking.