look nice power wise, very simelar to the stock pipe, bit more mid to top end power and slightly less lower speed power. seems smoother than stock
yeah i've still got the area51, just waiting for my kit to arrive, at the moment it's got a TP 70 kit, yasuni c16 and 21mm carb, but i'm not running the kit, waiting for the evo to come hopefully tomorrow
that's personal preference, i love mine, got the handling sorted, the engine is pretty good, got a buzetti side stand on it, just a few pannels to sort and it's ready to go. i would like to get rid of the front fork system though.
the forks were bad on mine, the wheel was lob-sided too, i thought about putting Sr forks on mine but sold the bike to quick lol, there nice looking bikes though i reckon was just handling form e that was a let down
UPDATE why people call the kundo shit i don't know, got the jetting right now and the motor revs so much cleaner, maybe 5-6 mph better top speed and shit loads more go from 45mph +
i don't know how it will perform with a 172 but i should immagine it will benefit from a bit more gasflow through it as the stub is a good few mm wider than a stock barrel. so yes, i'd recomend the kundo as a cheap, good looking and sounding pipe.