Brute Force 300

[Underdog]

I bought one of these a few weeks a go and have been having lots of fun riding in the woods and trails around where I live. I was hesitant on getting a 2wd vs 4wd but so far so good for my type of riding. Anyway anyone have one of these machines and have done any performance mods to it? I'm not really wanting to make it louder just a little more grunt in the lower rpm range.

[Ajmboy]

2 years ago I installed an HMF pipe on my Grizzly 660 and have it till this day. It's a little louder than stock...here is a before and after:

HMF Swamp Series Yamaha Grizzly Video » QUADCRAZY ATV Community

[Underdog]

Ajmboy, very nice! It looks and sounds better without being loud. Did it require a rejet or adjustment of the carb? I removed the spark arrestor from my stock muffler and it made an improvement in the bottom end power, but I don't think its a good idea riding the trails like that. I replaced it and all is good. I will look into a muffler swap. Thanks for your reply and help.

[Underdog]

I found a Uni filter high flow air filter for the Brute Force 300. I guess its too new, not very many parts available yet. I ordered the Uni Filter, so we will see what that does.

[Underdog]

Installed the Unifilter and uridium spark plug and the bike is more responsive. I cant really say it has more power, but it starts and responds better. Im leaving the muffler stock for now as Id like to keep it quiet.