Which Grizzly?
If it is for the 700, there are a couple threads found in the FAQ about front and rear bumpers available for the 700 ('07-'15). The disappointing part of those threads is from the PB fiasco, the pictures don't show up anymore. But, the bumpers are still listed there for a start to do some research. I included the rear bumper thread too in the event you want matching front/rear.
http://www.grizzlycentral.com/forum/grizzly-chassis-body/32289-shopping-bumper-did-i-miss-any-pics.html
http://www.grizzlycentral.com/forum/grizzly-chassis-body/38279-shopping-rear-bumper-did-i-miss-any.html
If it is for the 700, there are a couple threads found in the FAQ about front and rear bumpers available for the 700 ('07-'15). The disappointing part of those threads is from the PB fiasco, the pictures don't show up anymore. But, the bumpers are still listed there for a start to do some research. I included the rear bumper thread too in the event you want matching front/rear.
http://www.grizzlycentral.com/forum/grizzly-chassis-body/32289-shopping-bumper-did-i-miss-any-pics.html
http://www.grizzlycentral.com/forum/grizzly-chassis-body/38279-shopping-rear-bumper-did-i-miss-any.html