Hi guys, just thought I'd give a quick review of this product. I know quite a few guys on here have the PMB end cap installed, however I went with the lexx end cap due to the carbon fiber look. First this cap is beautifully made, excellent quality for the price ($85) on ebay. Installation was a piece of cake, once you get the stock end cap removed. I decided to only remove the stock end cap with the attached cone and replace with the wide open Lexx cap. I was surprised, the noise level did increase, but not as much as I thought it would. It definitely increased the low end and midrange hit. Overall I couldn't be happier with the results for the money! For sure the best low budget mod you can do to your 08 or 09 YZ450. Here's a couple of pics.