Parts list: № Number Qty Name Options Next page: ST448076 REAR SWING ARM HD TANDEM WALKING BEAM 5-SECTION MAIN FRAME ( - 1999) ST448077 Rear Swing Arm Heavy Duty Tandem Walking Beam 5 - Section Main Frame (2000 - ) ST448079 Rear Swing Arm Wing Frame Walking Beam, No Front Caster ( - 1999) ST448075 REAR SWING ARM 12', 15' MAIN FRAME WITH WING WALKING BEAM (2000 - ) ST448074 Rear Swing Arm 12', 15' Main Frame 3 Section Machines and Wing Walking Beam ( - 1999)