This is a BRAND NEW pair (that's a set of 2) aftermarket Yamaha Banshee COOL HEAD DOMES
These domes are brand new, available in any size (see our other listings for other sizes)
These fit oem factory Banshee cylinders with a standard bore 64.00mm to 65.50mm (will not work on big bore re-sleeved cylinders)
Come with upper o-rings already installed
Will work on most aftermarket heads, Pro Design, NOSS, Chariot, VITO's, ModQuad, ADA, etc BUT NOT TRINITY