decelerator
 

I own a bear outbreak and my decelerator broke off is it ok to shoot my bow with out a stopper or decelerator

The rubber piece fell off or the whole thing?

If just the rubber piece did don't shoot it. Good chance of your string hitting the post and causing damage.

Dealer should have replacements

whole thing broke

Check with your dealer. Should be a warranty issue and replaced by company. Also, why did it break. Was bow dropped or something or possibly just a defective part?