Made from a Tri-Layer mix of an Aluminum impregnated Glass fiber outer shell with a Hi-Temperature insulating mat core and Silica glass blend liner. Double stitching and heavy duty capped anchor points make this Turbo Shield Look great and perform even better. Keeping the exhaust heat in the Turbo housing reduces turbo spool up time and exhaust gas velocity resulting is more power quicker. Available in T-3 and T- 4 Turbo sizes with more to come.