How do I fix this?

[SlowNstonie]

The back axel maybe? Moves side to side causing the chain to pop loose. How can I fix this?

 

[Karts of Kaos]

Spacers! or locking collars

 

[Budget GoKart]

in that case if you want to save it it will require cutting and or welding i suggest you replace the rear end a dead axle is two 5/8s bolts and a long peice of square stock

 

[Karts of Kaos]

i would not just because live axles are better.

 

[Budget GoKart]

depending on preference kaos dead axles are cheaper and easy to set up howe ever live axles are harder but provide more grip

 

[Karts of Kaos]

true. it really depends on where you are driving.