When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Ztube is pretty much solely for sound. It makes the nice purr into a low growl. If you're going spacer.. might as well get the MREV2 with the spacer.. if you can shell out some $$. That will give you some power gains.