Description Model/Year Cyl. Bore Size Sleeve Description Thickness O.D. Sleeve Length Type Brand Part No. 200 hp 93-99 6 3.544"(90mm) Pro v straight sleeve with ports N/A 3.807" 5.175" RS Advanced 1090SB Cylinder Sleeve: Yamaha 200 Hp 6 Cyl 93-99 Straight .020 Over Yamaha 6 Cyl 3.544 Bore 90 Degree 200 1993-1999