Starting in '03, the RM's have incredible power. Mine had a violent hit when getting into the mid-range. I've heard the 04's do too, though not quite as extreme. Mine has had motor work done to make it friendlier, and pump-gas worthy, since I'm a woods rider. If yours is pretty much stock (no cylinder work done) I would stick with stock gearing. (13-49) Or even gear it UP if you can...(lose 1 or 2 teeth on rear). Adding teeth to the rear will make the hit even more "arm pumping"!! Even at over 200 pounds, your RM will not be short of the power you need. Of coarse, I'm prejudice, but I've owned all the Japanese brands... and I find Suzuki as one sweet ride. If you're an Mxer you may want to stiffen up the suspension, but if riding trails or woods, it should be close "as-is". Have fun!