Id be interested to know your real speeds you have achieved kitting a px125? Im posting now as ive reached a confident run in period to test mine out.
Clearly vespa speedos are way out, so . If you have a before kitting and after speed that would be interesting, gives insights to noobs like me who prior to the kit was driving bog standard px125 about for 7 years and wondered whether kitting is worth it. Im summarising my results to decide whether it was worth it for others who might want to do a kit.
Heres my experience of my upgrade carried out by my mechanic in July.
PX125 with a bolt on DR177 (no porting).
A Sip Road 2.0 exhaust (already fitted before barrel upgrade)
Has a cosa clutch 20 tooth as standard.
24mm SI Spaco carb (116 main, perfect coloured plug).
Drilled out air filter.
NGK B8HS plug.
First run at speed after a 500 mile run in period, 110 kmh indicated, but actual on GPS app 60.9 mph (speedo 7mph over) Wasnt full on wind, but more side wind.
Another run at speed after 650 miles run in 115 kmh, actual on GPS app 64.5. So speedo once again reading nearly 7mph over. Scooter screaming like a train, could do with up gear and ran out of road due to traffic so maybe could squeeze a pinch more out of it.
Prior to upgrade I could hit 105kmh on a good day indicated so actual speed I suspect 58mph if following the 7mph over read. Note, i had an 2003 MY model which was not strangled by the catalytic exhaust setup.
Kit came in at 330 quid total. Fitting was 150 quid.
Sip Road 2.0 prior was 110 quid.
So what have i gained for my 480 quid investment?
Torque - incredible torque, i can overtake cars, trucks doing 50 mph on my local dual carriageways. I feel confident im not going to get stuck in the overtaking lane and can safely get past them now, return to normal lane after wards.
Hill climbs, it can pull up hills, get over railway bridges without struggling.
Wind - maintains at least 56mph in a strong head wind.
Two up - can take my kid on the back, its happy to cruise along at 50+
(im 12.5 stones, shes about 8 stone).
So im happy with the DR kit. OK, it only gives you about 7/8 mph over standard, its not a screaming rev monster, but you get there a lot quicker and gives you a whole lot more. Feels like being on my old P200 which did about 62mph.
As P200s are becoming pretty scarce where I am, a kit was the only thing i could easily do. Whats others experiences of 125 kits (whether just bolted on or ported etc) such as mallosis, pinascos, polinins, was it worth the money? thanks Malc