BMW S1000R 2014 Under Tail Carbon FiberMDI Carbon Fiber Under Tail for BMW S1000R 2014. All our carbon fiber Under Tail 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