Nice....
Its a decent loop man. Heavy bass and plenty going on. I like what you've done with the percussion, although I have a couple of suggestions that I think could possibly improve this piece.
I think you need a more predominant snare and bass kick. The most powerful part of drum and bass can be where the kick drum shakes you before the bass churns. You've probably played around with loads of different kicks etc, so I don't want to come across as patronising, but I think adding another bass drum and snare and boosting the right frequencies would hugely improve this loop. Also a little distortion always goes down well.
Good work, i thought this piece was heavy.