Compounds are listed generally from least to most aggressive. If you are unsure what pad would work best for you, please do not hesitate to call us! The Carbotech CT558 comes in the following compounds: 1521 The 1521 is Carbotech's high performance street compound. The 1521 compound is known for its release and modulation, along with unmatched rotor friendliness. 1521 is also a very low dusting and low noise compound with an excellent initial bite. This compound's excellent linear torque production provides incredible braking force without ABS intervention. Carbotech 1521 operating range starts out at ambient and goes up to 800°F (426°C+). 1521 is suitable for ALL street cars, perfect for your tow vehicle or fleet vehicle. Carbotech 1521 is NOT recommended for ANY track use. AX6 The AX6 is specifically engineered for Autocross applications. A high torque brake compound delivering reliable and consistent performance over a very wide operating temperature range of 50°F to 1000°F + (10°C to 537°C+). The advanced compound matrix provides an excellent initial bite, high coefficient of friction at lower temperatures along with very progressive brake modulation and release characteristics. Many drivers use the AX6 for street driving as well, even though Carbotech doesn't recommend street driving with AX6 due to possible elevated levels of dust and noise. AX6 is NOT recommended as a race compound in most applications. XP8 A high torque brake compound with a wide operating temperature range of 200°F-1250°F+ (93°C to 676°C+). Carbotech XP8 is the first of our racing compounds. Good initial bite at race temperatures, high coefficient of friction, excellent modulation and release characteristics. Extremely high fade resistance and very rotor friendly. Perfect for track day use with any tire and can still be driven safely to and from the track. Carbotech does NOT recommended XP8 as a daily driven street pad due to elevated levels of dust and noise. Carbotech XP8 is a great compound on the front & rear of most open wheel and sports racers. XP10 When Carbotech unleashed the XP10 to the general public it immediately gathered multiple regional, divisional, and national championships. The XP10 has a very strong initial bite with a coefficient of friction and rotor friendliness unmatched in the industry. Fade resistance is in excess of 1475°F (801°C). XP10 still maintains the highly praised release, excellent modulation and rotor friendliness that have made all Carbotech compounds so successful. Carbotech XP10 is not recommended as a daily-driven street pad due to possible elevated levels of dust and noise. XP12 Another highly successful XP series compound with an excellent initial bite, torque and fade resistance over and above the XP10 compound. XP12 has temperature range of 250°F to 1850°F+ (121°C to 1010°C+). The XP12 has that excellent Carbotech release and modulation that has made all other Carbotech compounds so successful. The XP12 is more rotor aggressive than XP10, but compared to the competition the XP12 is still very rotor friendly. XP12 is NOT recommended for use as a daily driven street pad due to possible elevated levels of dust and noise. XP20 The latest iteration of the highly successful XP series of compounds. XP20 is a step up from the highly successful XP16 compound. With an extremely aggressive initial bite, linear torque curve and excellent fade resistance the XP20 is another major step in progression of the highly successful XP series line of compounds from Carbotech. XP20 has a temperature range of 275°F to 2000°F+ (135°C to 1093°C+). Carbotech XP20 maintains our tradition of having the outstanding release and modulation that has made all other Carbotech compounds so successful. Carbotech XP20 is NOT recommended for use as a daily driven street pad due to possible elevated levels of dust and noise. XP24 XP24 is the pinnacle compound of the extremely successful XP Series of compounds engineered by Carbotech. This compound is based on the same fundamentals that exist in all other Carbotech formulations. XP24 has even more initial bite, more overall bite, and more torque along with the most linear torque curve we have ever offered. The thermal characteristics are of the highest Carbotech offers along with one of the highest coefficient of friction ratings offered by anyone in the braking industry. This compound is the longest wearing compound Carbotech offers as it was originally engineered for endurance applications at the highest pro racing levels. This revolutionary new compound has been extremely successful with open wheel, closed wheel, sprint and endurance applications. XP24 has a temperature range of 400°F to 2000°F+ (204°C to 1093°C+). Carbotech XP24 is NOT recommended for use as a daily driven street pad due to possible elevated levels of dust and noise along with the necessary heat required to work properly. RP2 The RP2 compound was engineered for endurance racing based on our highly successful XP Series formulations. RP2 has strong initial bite, a little less modulation than our XP12, but still maintains the rotor friendliness of our XP series compounds. RP2 has great fade resistance with a temperature range of 250°F to 1450°F+ (121°C to 787°C). RP2 is as rotor friendly as our XP series compounds. Carbotech RP2 is NOT recommended for use as a daily driven street pad due to possible elevated levels of dust and noise. Common Vehicle Fitments: BMW E36 3-Series 1990-98 Front E46 323/325/328 1998-05 Front Z3 1997-02 Front Z4 2003+ Front For more details on Carbotech products, including complete fitment guides, please go to our Carbotech Brakes Information page. Pre-Bed Procedure For a small additional fee, get your pads Pre-Bed to extend their life and improve performance. What is "Pre-Bedding"? Contrary to popular belief, bedding is NOT the transfer of material to the rotors. That's material transfer. Bedding is actually the process of burning off some of the chemicals in the pad material itself. When you bed pads at the track, you need to get them up to temperature high enough to start burning off those chemicals - while simultaneously transferring the material to the rotor. Having the pads pre-bedded burns off those chemicals in advance and allows quicker material transfer to the rotor, extends the life of the pad and sets the pads up to be immediately at full braking potential.
