Parts list: № Number Qty Name Options 1 BW14521 1 Wheel Kit 4 Bolt Hub Next page: ST539923 Wing Axle (Spring And Shock Absorber Suspension) (CX15) (021800 - ) ST539918 Center Axle (Standard) (HX15) (008500 - ) ST774468 Attachment, Dual Wing Wheel Spindles and Hubs ST539909 Center Frame, Skid Shoes and Transfer Lock ST740231 Attachment, Dual Wing Wheel Spindles, Hubs and 21" X 7" X 12" 16 PR Severe Duty Ag Tires ST744299 Attachment, Dual Wing Wheel Spindles, 21.0" X 5.25" X 9.0" Puncture Proof Laminated Tires ST539916 Center Axle (HX15) Spring Suspension (008500 - ) ST539911 Shields Mounted On Gear Cases ST539910 Wing Frame / Wear Shoes ST539926 Turnbuckle (Axle Linkage)