Ok, I wanted to stay stock but you guys have turned me over to the dark side. Jets and a Unifilter are on the way (thanks Dave and Brian). I can't afford an aftermarket exhaust right now so I have been experimenting with the stock exhaust to get more flow without the "firecrackers-in-a-stovepipe" sound that accompanies almost all attempts to replace the baffle/spark arrestor from the stock XRL muffler with something that flows better. After NUMEROUS failed attemps (I've tried everything) I think I may have hit on something significant. I walked into my local cycle outlet today and saw on the close-out shelf a "Pro Moto Large Silent Insert" which fits their aftermarket end caps for various bikes. A light bulb went off in my head and I picked it up for $13 and change - 60% off. I came home, removed the stock baffle/spark arrestor (which I had already ground the small weld off of), and it was just a bit too big to fit. I brain-stormed a few minutes and then clamped my 4 1/2" grinder into my vise, stuck the insert over a broomstick, and let it spin on the grinding wheel. In 20 minutes I had it fitting perfectly. Then I removed the small inspection plate (or whatever it is) from under the tail pipe, drilled a small hole through the inner sleeve (or whatever it is called) and through the bottom of the new baffle. Then I popped a small sheet metal screw through both to keep it in place, replaced the small inspection cover, and took it for a ride. The bike breaths much better and the sound is SWEET. A little louder than stock but not as sharp and tingy as any thing else I have tried. Just enough noise to set you apart in a crowd without offending anyone. It looks AWESOME too. Maybe the best 13 bucks I have ever spent on a bike. I am going to replace the screw with a rivet and stick with this mod for a while. I can't wait to get Dave's and Brian's Mods complete so I can rip it up! XR650L owners on a budget should check these out. Google the words "Pro Moto Large Silent Insert" and go till you find a good photo. The picture on Pro Moto's site stinks. I found them for $28. There is also a "small silent insert" and several "bike specific" ones, so don't confuse them. After all I've been through, I think it is still the most economical and easy exhaust mod I know of that works, looks, and sounds good (to me anyway) - even at full price. I am no expert. So don't sue me or chastise me if you can't make it fit, or your bike grenades, or it actually costs you horsepower, or you hate the sound, or you think it is ugly, or even if you just think this is a lousy idea. It SEEMS to work great on my Pig though. I would GLADLY pay full price for another one and just thought others might want to know about this option. CHEERS!