Buell Carbon Fiber Chain Guard for XB9S XB9SX XB12S XB12SX 2006 and upMDI Carbon Fiber Chainguard for Buell XB12 XB9. All our carbon fiber Chainguard are made with an Autoclave process, which uses the highest quality TORAYCA PREPREG carbon fiber fabric from Japan. More information on the manufacturers specifications: Finishes and Materials! Cures at 400 degrees and a pressure of 5Kg cm. One of the most advanced techniques for making composite components is by using PrePreg carbon fiber reinforcement, cured under heat