I would like to increase the performance of my 99 Big Bear 350 4X4, any ideas? I've heard replacing the stock exhaust with an aftermarket like "Cobra" might help but don't see much gain for the money.

 

I asked same questions for my Bruin 350, and was told that an Exhaust, K&N filter and Dyno jet kit were my best options. You could probably get a Quad Works Power kit for it, they have the Filter and Dyno jet kit, along with a prefilter.

 

Well I have a Wolverine 350 which is a similar engine to the big bear 350. First engine mod I did was a FMF megamax exaust and a K&N filter and I was very happy with the performance enhancement. with 9 or 10 disks in the pipe it has a nice depp sound but not extremely loud. That is your best bet. Of course you have different gears and it weights more so it wont be the exact same gain but flow in and out of your engine is a big first step in bolt on. you really only need a slip on as long as your header isnt rusted out just keep it it wont make that big a difference. DONT FOREGET TO REJET THE CARB after you do the filter and pipe or you will run lean and run a good chance of eventually melting your piston.

 

i also have a 99 big bear and would like to add a 424 unlocker and k&n air filter. what do you think of the unlocker? any problems and does it help increase the power? thanks

 

I have the 99 big bear FWSP 10 speed,I put a 424 in it but you have too cut and weld the front drive shaft with a collar,and put in a steady bearing,with that done it works great,I also put on 25" Bear Claw tires on. Now my problem is no spark and I have to find this problem.

 

don't put a cobra exhaust on it...