This is a BRAND NEW set of O-rings to replace the old ones on your aftermarket Pro Design Yamha Banshee Cool Head.
These also work for most other brand of Cool head, including Noss, Vitos, and Chariot, or MCA Stealth Heads
They will also fit a Cheetah cylinder, and well as stock.
Will fit any year Yamaha Banshee 1987-2006.