ChiknNutz said:You say to remove the lid and spark arrestor. Where I mostly ride (woodsy trails and the occasional stream crossing, along with wetness and mud), is this still a recommended mod? I personally don't want to suck in any water, and I also don't want to be the one who started a fire (or get cited for not having one). So, I've seen some of these lids that look like they have a breathable mat'l on top, will that also keep water out? As far as the spark arrestor, I know that many aftermarket pipes have options for that, but how much of a hindrance is it really? I saw something on ebay (of course) that replaces the stock one with a larger one, but it's not USFS approved. So what real options are available?