Well, my Viper has the typical triple pipe/clutch stuff which is great fun, but the best stuff I've done so far is a combination of 2" riser, Excell seat riser, and front Ohlins shocks. I ride a lot of tight, narrow woods and old logging/forest roads. Fields, ditches etc. Groomed trail is seldome in my vocabulary and the nasty rutted out mogul stuff is the norm. PLUS, my riding partner runs a 600HO REV which IMO is made for that kind of riding and very tough for a stock Viper to hang with in the ROUGH stuff. The risers have transformed my Vipers ergos and made a world of difference in this type of riding. I can actually take the junk sitting with my feet under me (like a REV) and that makes such a difference. The seat riser alone is a must for a bump junky. I would like to be a little further forward (Apex style), but it is SOOO much better than stock for my riding. The Ohlins just sweeten the deal and are worth every penny. Replacing my revalved rears with Ohlins will be the final part of my bump monster transformation. I'll never have quite the manuverability in the extreme tight stuff that the REV has, but on the occasions where things open up, I LOVE the long legs of that tripple. Nothing like amazing your REV buddies by sticking to em' like glue through the rough stuff, and then checking out when things get flat and fast again. best of both worlds for me.