Our 3.5K Original Series trailer kits have options for both single- and tandem-axle trailers. Whether you’re building or repairing a trailer, you can order one bundle and get all the parts you need in one convenient package. Each kit comes with an axle (or axles), springs, U-bolts, a hanger kit, and silver mod OEM tires and wheels. Your trailer will look fantastic when it’s finished, and we know you’ll love using it for years to come. If you have questions about any of our 3.5K trailer kits, please don’t hesitate to contact us right away. At The Trailer Parts Outlet, we’re always here to help!