In this kit, the calipers feature an Electroless Nickel Plated (ENP) finish. Because ENP is extremely hard and resistant to wear and corrosion, it is used in applications as diverse as the manufacture of hard disc drives and the targeting pods of the F-15 Eagle fighter jet. ENP is perfect for calipers that are frequently bled, and it won't chip and flake like a painted caliper if you bump it with your box wrench. It is the ideal finish for highly complex parts like the AP Radi-CAL, because it can be applied to the caliper's many curves and pockets in a very thin, uniform manner. ENP also has extremely low porosity, which is perfect for components exposed to harsh chemicals such a brake fluid. If you do get fluid, dirt, or debris on your calipers, ENP is incredibly easy to clean, and a quick wipe will bring it back to its former luster. Last but not least, ENP provides a jewel-like, liquid metal appearance to your brake system. The neutral, yet eye-catching finish meshes perfectly with just about any color scheme as it catches and reflects light.
"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.
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.
These intricate calipers have traditionally been machined from proprietary aluminum alloy billets. As one can imagine, machining away all of that material to achieve the final form is both time-consuming and costly. As a result, the price of these calipers has historically been prohibitive for the average club racer, time-trialer, or HPDE participant. Fortunately, the Pro5000R calipers use a new drop-forging technique that has dramatically lowered the manufacturing cost and the resulting price of entry, bringing this incredible technology to the masses.
Over the years, many different strategies have been employed to shrink the brake caliper footprint while maintaining adequate stiffness: More robust caliper bridge designs, two-piece calipers with steel through-bolts, exotic materials (i.e. Beryllium, MMC), forging rather than casting, monobloc design, etc. All of these innovations pushed calipers towards becoming lighter, smaller, and stiffer. However, until the advent of the Radi-CAL, the same basic rectangular, boxy shape remained the accepted standard.
Features:- Eliminates the need to remove the caliper for pad changes
- Retains OEM parking brake functionality
- Saves 18 unsprung lbs.vs. OEM iron brakes and weighs almost the same as the OEM PCCB system
- Jewel-like ENP caliper finish is incredibly durable and easy to clean
- AP Racing Radi-CAL with durable, ventilated stainless steel pistons (no ceramic piston caps to break) with anti-knockback springs
- Allows for the preservation of pricey OEM brake components
- Huge array of brake pad options from all major pad manufacturers
- Fits OEM 20" wheels without spacer
- 380x32mm, 72 vane AP Racing disc fits inside popular 19" wheels
- 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
- Includes pad tension kit (eliminates noise) an disc burnishing at no additional cost
- Designed to work with our Essex/AP Racing front BBKs ( CP9669 or CP9661)
Fitment:- Porsche Cayman 718 GT4 RS 2017+