I have a '04 predator, stock except for a K&N drop in, I want to increase my low end power for better trail riding and i was thinking of getting a 40 tooth rear sprocket to help acheive this.

What pipe is adequate for a increase in low end power, i have been looking at the HMF ballance pro series?

any other mods to help with the low end?

Whar are good tires for light powder and sand plus general riding, it currently had razrs and they suck for the fine dirt.

 

if you dont mine an excessively loud pipe, buy a DG Xcellerator, very loud, but massive power gains, also get a jet kit.