This is a preproduction preorder system. These units will be set to ship the first two weeks of 2021! The T-Slash Exhaust System for the CBR600 is one of the most sought after systems on the market. After years of requests for develop the system for the 2003 and 2004 years, we were finally able to get one into the shop and develop our T-Slash system for them. Its aggressive look, sound, and improved airflow is an upgrade from the restrictive factory muffler assembly. It's Moto GP Inspired sleek design and less than traditional, but eye-catching overall aesthetics makes this one of the best selling systems out of the Toce line. If you have a CBR600RR and want to make some noise. You want the Toce Exhaust.