Parts list: № Number Qty Name Options 1 BW14521 1 Wheel Kit 4 Bolt Hub Next page: ST539558 Center Axle (HX20) ( - 003349) ST539556 Center Axle (CX20) ( - 002699) ST539555 Shields Mounted On Gear Cases ST539563 Wing Axle (HX20) (003350 - ) ST740229 Attachment, Dual Wing Wheel Spindles, 21.0"X5.25"X9.0" Puncture Proof Laminated Tires ST539567 Wheels And Tires ST539552 Hitch, Clevis and Stand ST539570 Counterweight ST740232 Attachment, Dual Wing Wheel Spindles, 26"X9"X14.5" 24 PR 'Fat Boy' Severe Duty Ag Tires ST539564 Turnbuckle (Axle Linkage)