This is a Yamaha Blaster top end base gasket from VITO's PERFORMANCE stock size, stock replacement, stock compression Fits any year Yamaha YFS200 Blaster 1988 to 2006 Works on standard bore AND Big Bore 240 kits Replaces Yamaha: 3JM-11351-00-00 and 3JM-11351-01-00 1992 BLASTER - YFS200D EXHAUST 19