I have owned the so called CPI for near enough a year now and I have to say i wouldnt have bought any other bike. if you want to learn gears and you want to have fun, this is your bike. I started out like the rest, passed my CBT and wanted something cool and different. When i bought my CPI, an 08 reg that had 4 previous owners and in excess of 8000 miles, i didnt really expect much from it but as i grew to know it and know biking i grew to love it. Mine was in pretty bad nick but reliability has not been an issue. Engine is a gem and the gearbox is ok. Couple of false neutrals hear and there and a gearbox leak but hey ho, its only a year. mine tops out at low 40s and takes an average amount of time to get there. they will do 45 mph all day at 10,000 rpm. they are outstanding and highly recomended!!!!!!!!

I got the bike off eBay a few months ago, The person who sold me the bike wasn't the most genuine person, The bike had a few problems what he didn't tell me about. I got the problems fixed, New brake light switch, New indicators, New battery. I then was riding it for about 2 weeks and i noticed another problem (Petrol leaking out of Carb, When i say noticed, It was pouring out the Carb. I decided to put it in a bike garage they did some good work, Cleaned Carb, Added new fuel taps, ETC. It runs great, Then i kind of overdid i rode it for about 6 hours in breaks of 10 minutes.. The spark plug went and i have now had to fix that. I decided to spend a lot of money getting this bike to tip top condition. New spark plug, New 21MM race Carb, 70cc Cylinder kit, Racing crankshaft, Race piston, Yasuni Race exhaust fully DE-Restricted. The bike runs great and is very very powerful now. Like new (Full Rebuild) Overall i wouldn't get this bike as all you get is problems. To get it reliable you have to replace half the parts with good parts (Aprilia ones) it is not worth the trouble, Buy a either a Derbi, Aprilia, Yamaha. Also the electrics are rubbish.

I was going along and my cpi sm50 07/08 and it just started vibrating from the engine so i don't use it now as i don't want the engine to fully muck up, the faster i go the more it vibrates but i am not sure why!!, if anyone might know why can you please give me a comment, i will chuck you some money into your paypal or send cheque or whatever if the problem is what you say it is, thanks

I love my cpi, i bought this from new and when it was restricted it was painfully slow. once i had my first check over on it i de restricted it very early, it was worth it the gears are alot longer and smoother will go between 55-60 but if a different exhaust would be added it would be even faster. had a couple of problems but nothing major. all in all a great first time bike.

The bike overall is good. When i bought the bike the first thing i found was it is a bit slower than the other 50cc geared bikes out there. The sm exhaust greatly reduces power and is under geard so i ran out of revs in 6th gear but only did a TRUE 45mph which is not that good. If your going to leave this bike standard steer well clear HOWEVER! if you upgrade the cylinder like i did, i fitted an airsal 70cc aluminium kit (all minarelli AM6 kits WILL fit the engine as is based upon the minarelli AM6 engine) and i also fitted a doppler er1 exhaust or any minarelli AM6 exhaust will do. The results are OUTSTANDING people, it now out accelerates both my mates 125cc 4 strokes and thrashes my mates aprilia rs50 with a polini 70 kit, still lacks in top speed but bigger front sprocket will solve this! If your a willing to spend £300 on these upgrades i guarentee you will be happy! Fuel economy before i fitted the 70 kit was 85mpg and i ride it flat out all the time. Electrics are a bit shabby but again if you spend £20 on wire etc they will live up.

i've had my bike for 2 weeks now and from the first day ive had problems with my spark plug it would always get dirty with oil. i had a denso and now changed to an NGK and it now works brilliantly .....not tremendously quik but very comfortable and souple.....i would tell anyone to change to an NGK sparkplug !!! it makes all the difference !

Brilliant bike nice to ride .few proplems here and there sucha as electrics mainly indicators anyone have any idear how to wire them up lol ?

i have owned a cpi sm 50 from new, it has been de-restricted fully ( technigas exhaust, rear sprocket 48t, front 13t, did racing chain and has been upjetted) it hasnt ever broke down on me and is very reliable have not had anything repaired and has also done 4k miles. i get 61mph on top end and also accelerates very quickly. im not too sure from whick year onwards but i do beleive it is 2008 cpi use enduro 2 engines which are more reliable compared to the first ones. overall i think it is a great bike as i use it everyday to college and work and even socialising with friends with no problems what so ever. i would recomend this bike to anyone especially it is cheaPER comapared to most geared 50cc motos

i have owned my bike for about a week now,i payed about 1500 pound for it,i have had nothing but problems with it.the first day i got it the throttle cable snapped and know have found that there is water in the gearbox and oil in the rad.my bike will do 65mph on the flat and it has been geared up and had a technigas exhaust.what could the problem be why there is water getting in the gearbox and oil in the rad?
any help would be grateful!

I have the CPI SM 50 (red and black) What can you say, it's a nice looking bike and when it goes it does go well even when it's restricted but the electrics and the water pump let it down.

The alternator is very unreliable and doesn't do a good enough job of charging the battery, the wiring really needs totally redoing when you get it and a good start is to change the battery for a more powerful one.

Problems I've had are the battery always draining down so it was rewired which solved that problem, then put in a larger battery to give it a bit more juice, the lack of a kick start means in cold weather it can put real strain on the battery.

The water pump occasionally fails and either pumps water on to the floor or in to the gear box so putting in better seals on the engine are a good idea. Finally it's worth changing the LED indicators as the water gets in to it them and then they don't work either but this is partly solved once it is totally rewired.

In short it's a nice bike when you chuck lots of money at it and get loads of mods done, the main problem is it is made in japan for their weather and it doesn't cope very well with the british climate.

1000 mile, new engine on my CPI SM Supermoto 50
2000 miles new rear disc caliper and CDI unit
3000 mile water pump seal goes mixing gear oil and coolant
5000 mile new engine, exhaust and clutch

Looks great but in 1st year spent 4 moths off the road.

After riding bikes for 8 years up to 250 I was really pleasantry surprised with the CPI SM 50 2008. Its acceleration doesn't compare to other 50's especiallty scooters. Its six gears gives the perfect control you could want with a 50cc engine. Many comments on its look mainly because it looks like a 125 due to its shape and height. I would recommend to anyone who doesn't just want to get from A to B but wants to really enjoy riding as well!

Had the CPI SM Supermoto 50 over half a year now and have had alot of problems. Its in and out the garage like a yoyo which is annoying and very expensive. Its had to have a new piston and crackshaft after 3000miles, rear chain feed to the rear sprocket snapped off the sway bar and got wedged in the front sprocket. Ive now got electrical issues, luckly i was on the way to the garage to pick up a part they ordered for me when it chonked out on a round about. They manged to get it to start with a new spark there and then but it cut out on revs under 5000 or so, so was completely unrideable. Can't wait to get a car tbh after this.
But dont get me wrong when it wants to work and when i first got it, it was amazing. Unfortunatly these problems just seem to let it down hugely. :( shame really.