Originally posted by Richard4L1
As the RS250 shares the same engine with the Suzuki RGV250(VJ22 model),many of the technical tips,parts,etc. are applicable to your bike.The Aprilia owner's manual reommends ring changes every 5,000 miles and piston changes every 10,000 miles......The powervalve problems that plagued the earlier RGV are not a cause for concern on the RS as it uses a more reliable twin pin design.....And unless you intend using your Aprilia mainly for the track,keep the stock pipes as aftermarket ones only give an increase above 8,000 revs(1-2 bhp and some more over rev) but with a corresponding loss below.
This reply is NOT intended to argue with you. However, my personal experience is different from what you are noting in your post.
1) I think it's important to note for people that the 8000km (5000mi) service on my RS250 road bike was not much more expensive than a major servicing on my Ducati. So yes...they change the rings and all, but I think Elo should know that this isn't a big deal or major expense (relatively).
2) There can still be power valve issues, but this can fairly easily be remedied with a good 2-stroke mechanic. Biganski does great work on these and can quite readily remedy that issue.
3) I found that putting on the Arrow full system made a BIG difference from 2500 RPM on up. Depending on who you listen to, the Arrow pipes with some modest jetting to compensate can make a 3-4 hp difference. I haven't had my bike dynoed, but I can tell you that the range of performance increase isn't just at or above the sweet spot. It really helped across the board.
Caveat: I'm not mechanical in the least sense....so these are simply my "seat of the pants" observations and my personal experience with my mechanic and guys I know who are racing these in FUSA and WSMC.