is it totally necessary to have the lower chain roller on on my 350 yamaha warrior? it was bent and worn so i took it out, and i was wondering if i could leave it off, or if i should replace it

 

You don't have to have it, but it does help to keep the chain from slapping around when it's more loose than normal, plus they are only around $12

 

Yea i does help when the chain gets a lil loose from riding it helps form having the chain pop off thought the same as you for a while until my chain was popping off all the f ing time oput it on there and poof problem solved