We will track down a quote and contact you back. Take note that the size 5/8' has axle bolts that fit perfectly on 1-inch tubing. Standard sizes for bearings are 5/8' and ¾'. You can find different sizes of wheels that fit the 4.10 x 3.50 from major auto parts suppliers. Send an email to and provide your shipping address. Most vehicles use large tires at the rear.Wanting this kit but live outside of the Contiguous United States? The best materials to use are either AISI 4130 or AISI 1018 alloy steel: AISI 4130 (low alloy steel) It contains 1 chromium and 0.2 molybdenum which are strengthening agents and is generally accepted as the best material to use when building a go-kart frame. Shipping Crate size - 30" wide, 69" long and 25" tall. The CIK-FIA dictates that a racing go-kart frame should be made from magnetic steel. Something that will give you superior handling on the track yet rugged enough to take the abuse you might give it off road. Once we began to think about producing our own kits, we took a look at our fleet of over 18 go-karts to get inspired! We went with a design that is the perfect blend between race kart and yard kart. We restored a number of classic vintage go-karts for our web series. They are either too hard to find, too expensive or too far gone to restore without a great deal of time, tooling and effort. But acquiring an original vintage kart is getting harder and harder. Fans of Go-Kart Alley frequently remark that the go-karts are just like the ones they used to have. Vintage go-karts have a fond place in the hearts of many. It should move YOU! The Go-Kart Alley kits will definitely move you! It should have style and curves that captivate your imagination. There are other kits out there, but a go-kart should be more than just a frame with wheels and a motor that moves it. Product Description Why the Go-Kart Alley Kit Frame?