AP Racing's part number:

• Disc: CP7177-206GC/CP7177-207GC
• Caliper: CP9661-2S4L/CP9661-3S4L, 6 pot, ANO

Complete front AP Racing by Essex Radi-CAL Competition Brake Kit for the Porsche 992 Turbo / Turbo S and Carrera GTS, as well as various 991 models:

• Iron discs are incredibly resilient under heavy track use, and replacements cost one tenth of PCCB ($600 vs. $6,000 per disc)
• Shaves over 20 lbs. off the front axle vs the 992 Turbo / GTS iron brakes
• Adds less than one pound per side of unsprung weight vs. the OEM Turbo S PCCB setup
• Fits inside 19" wheels, which the OEM PCCB discs cannot do, allowing for additional unsprung weight reduction plus improved tire options
• Our AP Racing Radi-CALs feature a removable bridge, making pad swaps far faster and easier than stock calipers
• Commonly available AP Racing pad shapes provide a wide selection of brake pad choices to tailor system feel and performance
• Removing the stock calipers and PCCB discs allows them to be preserved undamaged, retaining the vehicle's future resale value
• Our systems typically trade hands on the used market at 65% or more of their original MSRP, lowering the long-term cost of ownership. Use them for a few years and recoup a large portion of your initial investment.
• Designed to work with our matching rear 380mm Radi-CAL Brake Kit. For ideal brake balance, it is not recommended to pair with our smaller 365mm brake kits.
• Fits OEM wheels
• Patented Disc Burnishing/Bedding Service with kit purchase $100
  

What's In The Box?

• One pair AP Racing CP9661 Radi-CAL Pro5000R racing calipers
• One pair 390 x 36mm AP Racing 72 vane, J Hook racing discs, with fully-floating 6061 hard anodized aluminum hats and attachment hardware. Disc burnishing in Ferodo Racing pad compound included at no additional charge (normally $150 per disc pair). If you are using a brake pad brand other than Ferodo and are interested in compatible disc burnishing, please contact Essex support prior to purchase.
• One pair caliper mounting brackets and hardware
• One pair Spiegler Stainless Steel Brake Lines with abrasion resistant coating
• Caliper Bridge Pad Tension Clips (frequently referred to as anti-rattle clips)
• Detailed installation instructions
• Brake pads are NOT included with our system. Racing brake pads are a highly personal choice. Many manufacturers include a set of inexpensive, low quality pads with their brake kits. Rather than artificially inflating the price of our system with a set of pads you probably don't want anyway, we've decided to remove the cost from our system and allow our customers to choose the pads that best suit their needs/wants. When purchasing our kit, you are able to choose one set of front pads at a substantial discount vs. the retail price. Please use the drop-down menu to select your pads.

Radi-CAL

“Radi-CAL” is a blanket term used to describe AP Racing’s patented asymmetrical brake caliper design. Radi-Cal technology is grounded in Computer Aided Design (CAD) and Finite Element Analysis (FEA), and allows for organic, alien-looking designs that are a radical departure from conventional caliper designs of the past. Radi-CAL's are widely considered the pinnacle of current brake caliper technology. Since their inception in 2007, these revolutionary calipers have amassed a lengthy string of race victories at all levels of professional motorsport, while redefining brake performance expectations. For more details on the design concept and what these calipers have achieved in professional racing, please visit our blog and read The AP Racing Radi-CAL Story.

The key benefits of the Radi-CAL design:

• Massive Stiffness Increase- A 30+ % increase in both static and dynamic stiffness vs. conventional calipers allows for far less deflection under load, which means superior pedal feel & modulation, more even pad wear, and longer caliper service life.
• Considerable Mass Reduction- Removing all extraneous caliper mass lowers the caliper weight, despite the huge stiffness increases.
• Optimized Airflow- Air moves around and through the caliper more efficiently, providing superior heat evacuation and cooling.
• Efficient Packaging- The asymmetric caliper profile and internal fluid porting allows the caliper to fit into tighter spaces.