TI-6 PRO BC FULL TITANIUM EXHAUST SYSTEMTI-6 PRO BC FULL TITANIUM EXHAUST SYSTEMPro Circuit's Ti-6 Pro BC Titanium Exhaust System is constructed of full titanium head pipe, mid pipe, canister and end-cap.The Ti-6 Pro BC is a full race system intended for closed-course racing only.The Ti-6 Pro BC Exhaust System is only needed if rider is required to pass AMA/FIM sound regulations from 2025.