Description Model Year Sleeve Description Cylinder ID Sleeve Length O.D. Type DT-50 2Cyl. 1989 Straight sleevewith ports cut in 3.307"(84mm) 5.713" 3.672" RS Installation Instructions Cylinder Sleeve: Suzuki 50 Hp DT 1989 Straight With Ports & Compression Relief Suzuki 2 Cyl 3.307 Bore DT 50 1989