The 4" x 4" go-kart axle hub is most commonly found on go-karts using 8 inch rear or front wheels. Although these hubs are incompatible with Yerf-Dog 'karts, these are compatible with many quad, ATV, cart, golf, and trike wheels that use this same hub. The hub assembly features a kit of four lug nuts, and the hubs are 2-3/4" long. The inner bore is milled for a 1/4" axle key.
The most common style for gokarts features a 1" inner (or inboard) shaft diameter with the axle turned down to a 3/4" outer diameter.
Please note that our AlveyTech 4" x 4" Go-Kart Live Axle Hubs with 1" to 3/4" Step-Down are sold as singles. To complete your project, you may need to buy more than one.
Specs are going to be important when selecting a new hub. Please refer to our following specs to see if this will be the right hub for your project.
Specifications
Diameter: | 5" (125 mm) |
Length: | 2-3/4" |
Keyway & key size: | 1/4" (6.5 mm) |
Inboard axle bore diameter: | 1" |
Outboard axle bore diameter: | 3/4" |
Mounting lugs (across): | 4" |
Mounting lugs (side by side): | 2-7/8" |
Lug length: | 1-1/16" |
Lug thread: | 1/2x20 |

On Jul 9, 2024 at 07:19:11 PDT, seller added the following information: