Features: 1.Applicable Model: Rear wheel hub is fit for ATV TRX400EX SPORTRAX 400 2X4, please confirm whether your model is applicable before placing an order. 2.Size: You will receive a total of 2 rear wheel hubs, the axle diameter is 24mm, with 24 teeth, which can be used for the rear left and rear right wheel installation. 3.Strong Structure: Made of high strength steel alloy material, wheel hub surface after rust treatment, wear resistance, even in a variety of bad road conditions riding will not break. 4.Power Transmission: Wheel hub is one of the key components connecting the wheel and the rear of the vehicle, mainly used to support and rotate the wheel, and transmit power to the wheel. 5.Direct Replace: With 4 M10 bolts, it can be used to refurbish and replace the wheel hub shaft after the aging and wear of the original car, providing a smoother riding experience. Specification: Item Type: Rear Wheel Hubs_x000D_ Material: Steel Alloy_x000D_ Axle Diameter: 24mm / 0.9in_x000D_ Number of Teeth: 24T_x000D_ Bolt: M10 x 4_x000D_ Installation Type: Direct replacement installation (back left back right)_x000D_ Fitment:_x000D_ Fit For ATV TRX400EX SPORTRAX 400 2X4 1999-2008