I was wondering if there is anything you can add on or do to get more power without having to re-jet it.Just put 27inch 589's on and was hoping to make up for the lil lost power if possible. Thanks for the help.

 

Maybe a different tooth sprocket to make up for the different tires

 

No sprockets on a grizzled bear. Easiest power increase is a K&N air filter, Dynojet kit, and a slip on pipe. You will WAKE it up. Dynojet kit takes about an hour to install and the kits come with detailed instruction (with pictures/diagrams) and a phone number to call if you have any questions. Plus there's all of us on the forum to help answer questions, tips, etc. It is a very common upgrade. Tip #1: when changing your jets, run the motor with the fuel valve off to drain the carb as much as possible. Run the motor until it starves (stalls). Then start the installation. On the Raptor 660R (same motor as the Griz) the Dynojet kit is good for 3-4 HP (10%) alone.