This piece of hardware has obviously taken one for the team! I can't imagine not having one. Besides the gravel/rock protection it affords the undercarriage, it also aids in sliding the bike over trees, stumps, and large rocks. ( I've been seen riding really, really fast through some serious sh*t. ) If that's not enough, the manufacturer has contacted me to ensure my satisfaction with his product. My opinion, works as advertised, great customer service, five stars! FYI I also have the front engine guard (that's taken a few hits as well) and the mudflap extension.
Buy 'em now!