Essex Designed AP Racing Radi-CAL Competition Brake Kit (Front 9661/372mm)- Porsche 997, 981, 991, 718

Complete front Essex Designed AP Racing Radi-CAL Competition Brake Kit fits all 997.1 and 997.2 except for GT3 and 997.1 base. Also fits 991.1 and 991.2 Carrera S/4S/GTS/Targa 4 GTS/ T, 981 Boxster and Cayman, and 718 Boxster and Cayman.

• Features AP Racing CP9661 Radi-CAL six piston calipers
• No unsprung weight penalty vs. OEM despite the additional pistons (6 vs. 4) and much larger disc
• Huge array of brake pad options from all major pad manufacturers
• 372x34mm, 84 vane AP Racing disc
• Every component designed to resist the heat of extended track sessions
• Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system
• Designed to work with OEM rear brakes or our Essex/AP Racing rear brake kits 

Advantages Over OEM Brake System

Our CP9661/372mm Radi-CAL Competition Brake Kit offers our customers the following advantages over the OEM brake system:

• Eliminates the need to remove caliper for front pad change
• No unsprung weight penalty vs. OEM despite the additional pistons and much larger disc
• AP Racing Radi-CAL calipers are the stiffest, lightest, and most technologically advanced calipers available at any price
• CP9661 calipers use a 18mm thick, commonly available brake pad shape
• Ventilated, domed back, stainless steel pistons keep heat out of the brake fluid and provide an ultra-firm pedal
• Mitigation of pad knockback via anti-knockback springs behind the caliper pistons
• Anodized caliper finish that is resistant to wear and deterioration at elevated temperatures
• Stainless steel caliper hardware for a long caliper service life under frequent pad change conditions
• High temperature, low drag seals that will hold up to track temps= less rebuilding and longer service life
• No dust boots to burn up 
• Simple pad change with two bolts or quick-change spring clip, no caliper removal required
• Lifetime professional caliper rebuilding support by Essex (at a fee)- pull off your calipers, send them to us, we clean, inspect, and rebuild them
• Available disc burnishing service ensures that your kit arrives ready to be installed and driven hard immediately
• Championship winning, 72 vane, fully floating, AP Racing J Hook racing discs with 12 attachment points to hat
• Anti-knockback/anti-rattle disc attachment hardware
• Replacement iron disc rings available at an extremely competitive replacement price ($359 each).
• Disc metallurgy specifically designed to handle the temps typically seen on track offer a long service life
• Highest quality, Spiegler stainless steel brake line with clear sheath that reduces compliance over OEM rubber design