It doesn't say of it's for the 48 or 66cc engine or anything about the RPM it is tuned to and doesn't look like you change it but it sure looks a heck of a lot easier to install than an SBP pipe.
Sorry, KC, but that thing is just downright butt ugly.
I can only imagine how that flex pipe is going to vibrate. Go for it and let us know how it works but I wouldn't give $5.00 for it let alone $75.00. But that's just me.
The flex pipe looks far too long for it to work very well as far as power goes, and keeping all that squirmy pipe in place looks like it might be a hassle.
If mounting is more important than power it should work well enough if you like it.
I don't care for it myself. I agree with 2door.
Buttbone ugly.
I would get it if it looks like other pipes on the market will not fit your motorbike without cutting and welding. I wouldn't buy it for performance gain.
It does give me an idea though, if you started with a tuned SBP pipe with it's difficult copper and metal header pipes an easier fitting pipe the same tuned length could be used, and I am even thinking some sort of very course thread pipe section could be used to fine tune the pipe in place for the power band boost exactly where you want it without having to pull the whole pipe off and guess every time.
if you could cut the flex pipe to fit different bikes it might be kinda cool, but if you're stuck with two feet of hose it wouldn't be very practical, non-tunable, and probably wouldn't offer much gain.
It added no performance improvement, in fact it might even impair that YD 48cc Skyhawk running 25:1 mix and Iridium plug as I couldn't find any 'sweet spot' and it topped out at 28MPH (48KPH) and it's loud but in a cool way.
I didn't try widening the pipe header as I don't know what size the flex pipe is inside but one thing is for sure, a different more open header is needed to even see how it's tuned and if it helps.
Performance aside the Poo-Poo pipe went on easy, bent reluctantly to my will but stayed bent and with a couple of hose clamps you might maybe even be able to make it fit the bike frame perfect.
All I care about is it is exactly the whole bike "look" the young customer was after including no chain guards, a springer front fork, short low handlebars and seat and as black as possible. He's a happy young man.
Yea I see where ur coming from ir different but this is my 4th build and I've used every pipe that fit these HT's so ohere is my honest opinion compared to the good old stock non epa muffler it's a PITA to start harder than any 70 cc pocket bike pipe this is w a ngk bpr6hix so until I let her warm up I was surprised at the low mid to higher ram response and power and torque I couldn't find a leak and the flex pipe doesn't vibrate at all it seems to be two rubes in one and the inner one is so tight the length doesn't waste the expansion process much at all the expansion chamber is small but effective maybe the right size for such a small intake port In like it due to its bolt on simplicity and NO leakage but I've got a banana type exhaust I'm trying next it seems like the xact opposite large c chamber 3 in header and no muffler just an abrupt end and short 45 degree angled opening or Stinger