This kit will upgrade your Non Pro ender 3 Y axis to a 4040mm extrusion, metal motor mount and belt tensioner, and larger 42-40 Y axis motor. Includes Y belt to fit the new size.
Note: You will need to adjust your steps / mm to account for larger pulley size on this motor.
Another Note: Using this kit allows you to install linear rails if that is a path you'd like to follow.