changing a sprocket to a diff tooth size

[MedicMudder]

not sure were to post this but sure the mods will help   Hey guys my son's Trail boss 325 the rear spocket is bad,thinking bout going to 42 tooth for a lil more low end grunt.Play in the mud alot,no low range.I was thinking this might help with smoking the belt. Need to
know if this will over rev the motor when trail riding?? or will it make a difference. tnks

[QuadMAN2k5]

No it doesnt really matter, You will get mor torque but a little less speed.  How is the chain?

[MedicMudder]

gonna replace it also,that way im coverd.