Ok, I'll join the pedantic few. Tapered bars are indeed a performance enhancing component regardless of what anyone says, as are MOST of the equipment we fit to our VMX bikes. I personally hate them & think they should be refused but that's my opinion and I'm not all bent up over it. The argument Ted is putting forward is that CR480 forks are a performance enhancement, maybe they are, maybe not so I'll argue the point to the extent of the pragmatic few on here. Tapered bars not allowed on that rationale. Stupid, stupid, fork*ING stupid, but an arguable point with absolutely no benefit to anyone but my own personal agenda.
Marks list is simple, but the simpler drum brake, air cooled, non linkage basics say it all anyway. I'm one for RC style big bore Honda's (I have one but have no desire to race it). I remember the phone call from a "concerned" person when it was just an idea in my head bleating that I wouldn't be able to ride it in VIPER. They SHOULD be evo legal IMO and are vastly different to the Dutch twin shocks. The fear mongering alluding to such bikes is utter BS. No-one is going to do that here, or fit an XR400 engine to a '79 CR frame or the like & turn up at a vintage meeting, get real.
K