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Dear Forum. I have now got my spanish motovespa pk xl 75 registerd with a UK plate so im now legal to drive about. its completely standard with its massive factory fitted 75cc cylinder, standard exhaust and del orto 20mm carb.

Ive had carb stripped, a new stator fitted, new front shock, new brakes and tyres and it drives like a dream and #since the front shock fitted ive been confident to give it some welly as it veered about like a shopping trolley. On GPS im hitting the heady speed of between 46mph and the top speed of 48.5mph depending on wind, which im pretty impressed with for such a little engine.

So, ive decided im not gonna kit this thing, its for pottering around local and i want to keep it true to its originality. But from my experience of my PX, a simple exhaust change made a great difference on top end, the sip road 2.0 put 5mph extra when my px was standard 125.

So my question is, i want to keep my spare wheel under left side panel which rules out the ET3 style banana pipe (they are definitely pleasing on the eye). I dont want something that is gonna make a tinny whine and be all noise and no gumption or be hard to take rear wheel off, so i hate to use the word SITO, which i used to call shitto, but heard that the small frame sito plus, can put some decent KMH on your top end?!?!?! I say shitto as they rust quick and rattle apart, but i can high temperature paint it from the off and they are cheap enough to bin and replace if any good. Theres also the Sip Road Banana pipe which i think comes in two sections if you do have to change your rear wheel, bit of a faff at side of road but if i have to compromise, are these any good?

On a v50 with a 75 kit one person claimed to get an extra 10kmh with the sito plus over a standard pipe. My goal is to get my ped to 50mph. Anybody got any experience of exhausts on smallies? My second newb question is, im not sure where my 75cc xl sits in terms of its exhaust manifold sizing. I mean, does it need a pipe designed for a 100/125, or will a 50cc pipe fit? The motovespa 75xl is some what of an anomoly and hard to get info on it. If you cant answer the last question, any advice on small frame pipes is really helpful, or even a site where small frame exhausts are reviewed appreciated. So far ive only found reviews for heavily tuned smallie engines. Cheers malc
Its name is 'Pedro', lived in Barcelona for 34 years, i call it Ped, as its light as a moped.
Its name is 'Pedro', lived in Barcelona for 34 years, i call it Ped, as its light as a moped.
⚠️ Last edited by ferriswolf on UTC; edited 1 time
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1979 P150X, 1983 P200E, 1987 PK125XL Elestart, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2
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Thank you so much for this, answers both my questions in that i need the 125 version. If i could nudge an extra HP out of it and a few MPH id be happy.
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ferriswolf wrote:
Thank you so much for this, answers both my questions in that i need the 125 version. If i could nudge an extra HP out of it and a few MPH id be happy.
Don't forget to upjet…
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'15 GTS300, '86 PX125EFL, '66 VBB, '01 ET4
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These are good, there are versions for the small/short cylinder and the bigger/tall/later cylinders like primavera, etc. I'm not sure which version fits a 75, but here is the small version. If you have cylinder studs, I think you get to use the big, and if you have cylinder bolts I think you use the small, but someone else can chime in with that. I've only messed with 125cc+ on smallframe.

https://www.sip-scootershop.com/en/product/racing-exhaust-polini-banana-sport_20020500
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According to the scooter centre link the 125 version is for my 75xl and upjet 2 to 4 Pts. I reckon I will push the little scoot to 50mph with it. I've got plenty of gearing left in 4th. Got to buy in from Germany which haven't done before cause uk suppliers only do bgms for large frames . I'd like to know the port layout on the xl as for tiny capacity it's got plenty of punch for what it is. I think I read that the 75xl has very large transfers so might explain it. I also wonder why motovespa made a 75 and a 125 , maybe the 75 was for age restrictions, in the uk a 16 year old can only drive a 50cc.
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the Polini one I linked is easy to live with, it's not too loud, way better than stock performance, and fits even if you have the big battery box. it's a win all around
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sdjohn wrote:
the Polini one I linked is easy to live with, it's not too loud, way better than stock performance, and fits even if you have the big battery box. it's a win all around
But it doesn't allow spare wheel under left side panel, I need a spare wheel on board.
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A spare? Must be different on a pk. I didn't think any small frames had spare tires under the cowl.
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Molto Verboso
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Try the exhaust first and see how it goes.
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Wow I see from your first pic they really did squeeze a spare in there. That will limit you a lot!
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sdjohn wrote:
Wow I see from your first pic they really did squeeze a spare in there. That will limit you a lot!
Yes quite ingenious .
Spare pk 75
Spare pk 75
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