SEASTAR TOURNAMENT SERIES TIEBAR CYLINDER (CENTER). #HC6700 Series. Extreme heavy-duty cylinders and tie bars designed for high performance twin and triple engine applications. Suitable for use with all SeaStar Helms. Heavy duty stainless steel integral tie bar/pivit plate with 1" diameter heavy-duty stainless steel tie bar. Allows independent engine tilt. Description: Center cylinder engine mount for Yamaha 200-300HP, EvinRude-Salt/Fresh/DI engines, 200-300HP. Note: 2-HO6700 tiebar kits required for triples.