How To's

How to check if your Scooter CDI is restricted

June 6, 2015

I am getting a lot of people asking me, if their scooter has a restricted CDI, how to check if it is restricted and how to derestrict it. First of, I want to explain why CDI's are restricted in the first place.

Why are some scooters having a restricted CDI?

To get one thing straight: Only 50cc scooters have a restricted CDI. I have never heard of a bigger engine model with a restricted CDI which is being shipped like that (if you know please leave a comment). Tho, keep in mind that there might be an additional third party restriction installed to allow for riding your scooter model with a certain license.

With this out of the way, let's talk about the restricted CDI's found in some 50cc scooters. The obvious reason for a restricted CDI is to ensure that they don't go faster than the legal speed limit. You have probably read my article on derestricting your scooter and you might ask why some do a CDI restriction and some do another one. Whilst in my early years of scooter tuning all restrictions were mechanical, the restricted CDI only became popular in the last ten years or so. I was doing a bit of research and believe Japans government enforced the use of restricted CDI's at some point. Why I can't tell you exactly what happened, this explanation makes sense since Italian made scooters still don't ship with restricted CDI's up to today, even tho they share the same (Yamaha)Minarelli engine. This leads us to the next question

Which scooters have a restricted CDI?

Whilst this list is probably not 100% accurate it should point you in the right direction:

Newer (after 2005) model Japanese 50cc scooters
- This includes Yamaha and Honda models (both 2-st and 4-st), especially those for the Japanese market. For example the popular Yamaha Aerox is built for the European market and still ships with an unrestricted CDI (please comment if you know more)
- Honda Ruckus/Zoomer appear to be CDI restricted. Tho, since performance of the stock 4-st Honda GET engine is very limited some people state different results. Don't expect too much from installing an unrestricted CDI.

Chinese 50cc scooters
- Pretty much all of the Chinese 50cc scooters have a restricted CDI installed. I can't tell for sure why, but I believe the Chinese government might have enforced a similar rule, or the Chinese manufacturers just wanted to ensure that their models can be sold to the Japanese market without modifications.

Piaggio 50cc injection models
- Whilst this is not necessarily a CDI restriction, the injection models by Piaggio have some sort of injection restriction in place that acts in a similar way as the CDI restriction. Apparently these can be unrestricted via a software update. Get in touch with your dealer about that.

How to check if your scooter has a restricted CDI?

If you believe your scooter is CDI restricted there are some easy tests:

Right downhill. If your scooter is not going faster (or stops revving higher at some point) when going downhill compared to going straight, then you can be certain your scooter has a CDI restriction in place.

Another way to check needs an RPM meter. Place your scooter on the main stand and make sure it's secure. Ideally have someone to help you holding it in place. Rev the engine up slowly and check if at some point the engine stops revving for no reason. This is probably somewhere around 7-800rpm. If it revs higher than 8000rpm you're don't have a restricted CDI in place.

Install a 70cc cylinder kit. If you scooter still doesn't go faster than stock, the CDI is restricted :)

How to derestrict your CDI?

Whilst most of you are probably hoping that the CDI can simply be derestricted MacGyver style by cutting a wire, I have to disappoint. Whilst it is apparently possible to derestrict a CDI for some models (old Piaggio Purejet), most models require you to purchase a derestricted CDI. Companies like Malossi offer derestricted CDI's at high prices, but if you don't care about marketing and high-end tuning you are good to go with the cheaper models. I have now put together a full derestriction kit for the most popular scooters out there. You can find it in our new shop. We are shipping worldwide!

Check out the New TuningMatters.com 50cc Scooter Derestriction Kit!

And since you read all to the end, here is a 10% Discount Voucher for a few days: 10offYeah

You have anything to say? Feel free to comment on this article, or post to the forum if you have any questions!

#unrestricting #derestricted cdi #50cc scooter

112 Comments

Jason Oct 15, 2015

I can't find any information specific to my big chief 49cc scooter. Are you familiar with them?

Daniel Oct 28, 2015

I can't find the manufacturer of it. You have any details? In general chances are high that it has a Minarelli engine clone in it. If thats the case theres heaps of parts!

sean Jan 1, 2016

Nsc 110 cdi fits and do slight work on the exhaust it restricted. Cdi increases. About 1000 rpm more I gona try crf 250 cdi they rev out to 11000 rpm not tried yet pends how much it costs or a cbf 125 pgmfi

michael May 9, 2017

anybody know if a 2010 sym mio 50cc scooter has a restricted cdi? and are they easy to change to an unrestricted 1? also does changing the rollers make a diff to getting up hills and top speed ect? 94kg dude here and hellis headwinds ect slow me right down cheers guys

Connor Apr 7, 2022

I have a 125cc Honda sh mode 2019 and when i get to 66 miles an hour the bike starts auto braking to keep me at that speed what could that be? Can feel it engine braking or something, Need help :(

Shaq Apr 6, 2024

Hey, I need help on my Yamaha Jog CV50 which uses a 6 pin cdi, is there a specific wire to cut to remove the rev limiter? The Racing Cdi prices online are crazy. Thanks

Eden Mar 30, 2018

I have a 2018 aerox 4 stroke 50cc and cannot find a way around the restricted cdi unit,does anyone know of ways around it or aftermarket cdis for this model?

Lukas Mikosch Jan 18, 2019

Have you found anything to derestrict the scooter?

BrokenBiker Sep 14, 2019

The Aerox has a physical restrictor in the form of a washer in the front pulley which stop the two sides closing together and increasing the radius of the pulley. If you remove this washer (plenty of guides on the internet) the variator can close up, form a larger pulley and have better gearing for speed when the engine output is at higher revs.

There's potentially also restriction in the exhaust - if you're not willing to chop and weld it yourself then you should look for a used "tuning" exhaust as a shop will charge more than a second hand part is worth to complete the work.

Joaquin Oct 27, 2015

Hi daniel, first and most thank for all the information given, very helpful.
I just bought a honda nsc50r similar to the vision model. It is a 50cc 4t and it is CDI Restrited !!! A nightmare!!!! The CDI is a black box with 33 pins and i have expended sooooo much time trying to get a derestricted one online but there is nothing out there!!! I am quite desperate about it it is so unsafe 28mph!!!! I am hoping that you know some website where they sell this.

Thanks a lot!!

Daniel Oct 28, 2015

You should try this one here: http://www.racing-planet.de/einspritzmodul-tk-turbojet-lambda-fuer-daelim-honda-kymco-suzuki-yamaha-p-272944-1.html?backcPathco=14&cPath=2664_34374

Injection engines are different to traditional carb engines. They don't really have a CDI that's why you have all these pins :)

tad Nov 26, 2015

Hi I had a eureka moment with same ped Honda nsc 50. Fit the nsc 110 cdi instead it has same fitting type and takes 5mins .It is still rev limited but not as much and has more umph combine with malossi variator for easy 50mph.

Daniel Dec 4, 2015

Nice, sounds good!

Stewart Jan 23, 2016

Where is the cdi located on the nsc50?

Daniel Feb 14, 2016

its the black box the sparkplug cable is connected to

km Feb 20, 2016

Hello tad,

Are you sure for the nsc 110 cdi instead the nsc 50 cdi ? This solution is really works ? Do you have tested it ?

Thanks very much for your answer !

Sorry for my very bad English ?

Liam May 14, 2016

Hi I have the nsc50 with Mallossi variator.i am getting 60 km on flat..I haven't changed cdi yet but like to know if you can advise me to which cdi and what sort of results.

Sean May 16, 2017

Nsc 110 cdi fits and mallosi variator

steve Nov 21, 2015

Ive hired a pcx 125 in Thailand and it never goes above 98kph uphill or downhill

the power stops everytime until it goes below 98 or bounces around if the throttle is kept open - because there's no variation in when this happens it seems like its been restricted in some way

Daniel Dec 4, 2015

Yes, CDI restriction (or is it an injection model). Racing-Planet has unrestricted CDI for almost all models!

Joe Jun 11, 2019

Mate I have a Yamaha Cygnus X and is giving me hell trying to figure out why it won't accelerate higher then 60 climbing hills is slow to like 40km and in some instances going down hill will go up to 80km but that's it. I am at my Witt's end checked fuel filter throttle cable carburettor,air fuel tune up changed oil I even derestricted the 125 by removing that small washer that the shaft goes through being a centrifugaler clutch and still it crawls around help me mate

Dave Dec 11, 2015

Hi Daniel I have a peugeot kisbee 50cc 2013 plate the blue wire on cdi unit as been pulled apart and I've been told to cut or pull out pink wire near battery is this correct ...Please help ??
Thank you
Dave

reggie simmons Dec 30, 2015

Hi all i got a honda x8r on a 02 plate. Im after a derestrited cdi or someone who can derestrict them. Not paying silly mallossi price there has to be a cheaper alternative

karll Feb 12, 2016

Is the honda fes pantheon 125cc,2006 restricted

Daniel Feb 14, 2016

125cc arent restricted normally unless theres some specific rule in your country

Martin clark Feb 3, 2020

I have a lexmoto titan 125cc can I de.restrict this mate?

Martin clark Feb 3, 2020

And my lexmoto titan 125cc is a 4stroke cheers..

karll Feb 19, 2016

Is the honda fes restricted in any other way. And thanks daniel

Martin Apr 3, 2016

Is there any difference between Yamaha's 2st and 4st cdi units? I wanna do a proper order and get an unrestricted cdi unit for my 2015 aerox 4st. I asked racing planet but I didn't get any response. Help, please:) Thanks!

Daniel May 6, 2016

I don't think they are the same to be honest :-/

Miles Apr 21, 2016

So I have a 2014 ice bear 50cc trike. I have replaced some parts with aftermarket in hopes of reaching a decent speed. So far it includes : air filter, rejetted carb, plug wire, and a racing cdi box. For some reason I STILL don't gain any speed going down hill. Is there another restriction that can cause this besides the box? My next hope is the variator ring but I haven't gained any speed. Just boosted acceleration

Daniel May 6, 2016

If it's not going faster downhill then it's usually always the cdi. How much downhill are we talking here so? Are you sure the racing cdi, is really a racing cdi? :)

andrew smith Apr 17, 2022

what about the exhaust ,it might have a washer restricting it

Madmax Apr 26, 2016

I have Peugeot Django Sport 50cc 4T scooter and we try to find solution to
unrestricted it.
We didn’t find any restrictors from the variator etc.
So CDI is restricted.
Our django CDI box is 6pin + extra wiring for variator. Cdi have number QP5-45 D50-LK39 5A1
Can you help us in this case, where to find unrestricted cdi or is it same with some other model?

Daniel May 6, 2016

Hi,
Yes Peugeot has a history of restricted CDI, but also doing Carburator and Intake Restirctions. Have a look there too. Racing-Planet.com has unrestricted CDIs for almost all models available.

Alex Apr 10, 2017

Hi Madmax, did you find a solution? I have the same "issue"... Thanks

Adam May 24, 2016

Thank you for posting a good article about the subject nevertheless I'm still stuck with my problem. Maybe someone fro you guys know the solution for my scooter. It is SYM Mio 50cc 2008 4 stroke carburetor I believe it has restricted cdi for sure I just can;t find replacement. Planet racing offers original restricted cdi and not any unrestricted. I know it is possible to take unrestricted chineese cdi and somehow swap the wireing but I have no idea which and how. I kindly thank you for any help in advance.

Sam May 31, 2016

I have a aerox 4st 2015. Do you know what i can do to make IT faster?

Vine Jun 7, 2016

I can't find unresrticted CDI for Sym Symphony ST 50 4T year 2015, engine xs1p37qma-2.

Lawrence Co Jun 14, 2016

Does anyone have a cdi for honda ruckus.

Jeremy Jun 19, 2016

Hey, im looking to get an unrestricted CDI for my 2012 yamaha BWs (or Zuma) but im not sure which one is appropriate for my scooter, all I've found is that a GY6 one would possibly work. Is that right? Thanks!

David wilkes Jun 20, 2016

I have a kymco agility 50 if I purchased unrestricted dci would this alone make it quicker

Clayton Seneca Aug 2, 2016

Hi Daniel, thank you for sharing your knowledge. I just bought a Lance (Sym) Cali Classic 50. What is your suggestion for derestriction setup? Which CDI, etc. should I purchase?

Igor Aug 6, 2016

Hi, I have agility CITY 50 2t...does anyone know if the CDI is restricted and if it is how to derestrict it... Thanks...

david corley Aug 10, 2016

could someone tell us please how to derestrict a yamaski 50 geared bike 2016 model

Martin Aug 11, 2016

Hi how to know if the cylinder connection is inclinedor stright?

Anthony Aug 14, 2016

Hi I have a 2015 Tao Tao Thunder 50cc Scooter and I was watching a video on how to derestrict an older model to make it go faster. Well I followed the instructions in the video and when i opened the battery area there is No pink wire on the CDI. I just need to know did they change the color or is mine not restricted.

lindsey Aug 15, 2016

HI my son has a lexmoto echo 50cc, we bought a derestricted cdi and fitted it and the ped started once and then would fire at all, have we done something wrong or missed something.

Tyler Jul 21, 2017

For the lexi, I have one as well. The best thing to do is look up on eBay Chinese scooter CDI units and find a 2+4 pin one. Also put a sports exhaust on it as well here's a link to one that fits: https://www.chinesemotorcyclepartsonline.co.uk/partno_SPRTEX006

Tyler Jul 21, 2017

Mine even runs on a old 150cc Chinese cdi

Mark Timony Aug 26, 2016

I have a 2001 & 2003 vespa ET- 4.(150cc's). What do I need to bypass them? My scooter shop thinks they are rpm restricted by a computer. This sounds like your description of the CDI type. Is this correct? If so, what other modifications are needed? (fuel to air mixtures)?

Thanks so much!
Mark Timony
[email protected]
843 754 6656

Barry Martin Oct 7, 2016

Hello I have a 2012 Piaggio Fly 50cc 4v that I am trying to purchase a derestricted cdi for. Any help? Thank You

Barry Martin
[email protected]
813-562-5966

andrew May 26, 2017

did you have any luck im trying to do the same thing

Nikolas Nov 12, 2016

Good evening Hi I have the 50cc MIO have improved cylinder 63 CC - Bill 9 grams. and goes 65 km, bought from the planet CDI struggle and worse .... you suggest me something;
and when the throttle cut or feeders........please answer would go crazy....sorry for my English

Nikolas Nov 12, 2016

Good evening ....
Hi I have the 50cc MIO have improved cylinder 63 CC - Bill 9 grams. and goes 65 km, bought from the planet CDI struggle and worse .... you suggest me something;
and when the throttle cut or feeders........please answer would go crazy....sorry for my English.... :(

Louis Nov 15, 2016

Hi
I have a kymco agility 50 cc..
I heard it's a matter of cutting the cdi at a particular location and that will do it.
Whats your opinion?
Louis

Lukas Feb 16, 2017

Hi guys,

Can anyone give me a link where i could but derestriced cdi unit for my honda nsc50r, please?

thanks

Lukas Feb 16, 2017

I have chanted the variator in my nsc50r and that helped a little bit with soeed i was thinking if changing the clutch to malossi would help too? Does anybody know which derestricted cdi unit fits honds nsc50r?

Thanks

Daniel Mar 5, 2017

Hi Lukas,
Clutch won't improve your speed I'm afraid. Only initial acceleration from standstill might be improved. If you still need the CDI, can you let me know which country you're from? I should be able to hook you up!
Cheers,
Daniel

Lukas Mar 20, 2017

Could you let me know which is the correct cdi to buy for better performance? I guess it wouldnt help with top speed but maybe with accerelation a bit?

Tiny Mar 4, 2017

Nice write up Mate. My 150cc(2013 KYMCO Movie) Scooter has a restricted CDI. S you stated above I noticed this as I was headed down a steep hill and it would not rev nor accelerate past 9200RPM/105KPH. The only problem I'm having is trying to find a CDI to replace it.
Again nice write up.

Daniel Mar 5, 2017

Hi Tiny,
Yes, the Kymcos are all blocked even the larger than 50cc ones. I can get you a CDI probably, tho need to know the connector plug. Can you send me picture of the plug of the current CDI? What country are you from?
Cheers,
Daniel

Jason Mar 7, 2017

Hello New here was surfing when I caught ur site .and it's nice to see u helping so here we go I own 2014 taotao or Also known asVIP 50cc got good acc and take off but lose power and speed going uphill and not cdi restricted.got any advice

Lukas Mar 8, 2017

Thanks Daniel,
Im from Poland but currently luve in the uk. Could you help me find right cdi? Thanks

Alex Lanefelt Mar 25, 2017

Hi, do you know of is there is a cdi for peugeot django 4 stroke? Currently limited to 45km/h. Thanks

Tim Tibbals Apr 23, 2017

Nice information Daniel. I just purchased a 2017 Zuma 50F, and it is clearly CDI limited. But I only see a Zuma 50 and Zuma II 50 in the list of supported models. This is true at Racing-Planet as well. Will one of these be compatible with the 50F? Thanks,

George May 3, 2017

Hi, ive read your articles and suggestions for making 50cc scoots go faster, but any advice for a all stock tgb tapo to go faster? The CDI, exhaust, air filters, carb jettings, etc. Willing to buy mod parts if necessary for reasonable price. Thank you in advance more power.

Liam May 8, 2017

I believe mine is a Huatian-HT50QT-29A. It isn't explicitly listed but would the Kymo/GY6 be the correct choice?

Anders Alm May 23, 2017

Hi not-so-happy owner of a Peugeot Django 50cc 4T scooter and I am looking for an unrestricted CDI box. Would you know where to find one? Or do you have other tuning tips for this model?

mike Jun 7, 2017

What about the Venture Scooter it is a 50cc made by Genuine. I max out at 35 Mph. Any help de-restricing this brand\.

mike Jun 7, 2017

What about the Venture Scooter it is a 50cc made by Genuine. I max out at 35 Mph. Any help de-restricing this brand\.

Thank you.

Mahir Coric Jun 27, 2017

Hi huys!

Does a Yamaha Aeorox 2009 model. It goes 75 km/t just with I removed plumb in exhaust. What other things can i remove or change to get more power and speed?

-Variator
-CDI is restricted and if it is how to derestrict it…
-And other tips is welcome:)) Thanks

Tyler Jul 21, 2017

But a new CDI unit off eBay. Look at your CDI and find one with the same connector and simply put it in. Make sure to keep the old CDI just incase the new one doesn't work for some reason. Another thing you can do is up jet the carb. If you really want you could get a bore kit put on it as well

CHARLSTON Jul 21, 2017

Daniel. It is amazing to find someone with so much knowledge.
Appreciation from all the people I have read you have helped already.
I have a conundrum ped. It is a SYM Allo 50 and I can not find any info on it at all not even decent parts sites. I have just replaced the front indicators with aftermarket because I could not get original!

So I really need to get it over 27ish MPH it is dangerous with nothing to give me on speed. Please help me with what to do "how to do it" I am pretty good with a spanner so what can I do? CDI, Variator, Carb?

I can not find anything specific to my model.

Chhers C

chrissyboy Aug 4, 2017

hi Daniel great post mate , im looking to make my peugeot vivacity 3 50cc faster ,things done so far ,have sports exhaust removed the cone ,race clutch and rejetted carb to a 70, bike is still very slow, im now thinking that the cdi is restricted ,looked on web can only see cdi1s for up to 2008 mine is 2009 ,,read about removing a wire to cdi bottom left as you hold cdi in hand but not to sure I want to go down that road .the 2003 vivacity I had was not restricted only a variator washer . oh I have removed the restrictor plate on variator on my current bike ,any tips on how I can make my bike faster . regards chrissyboy

chrissyboy Aug 4, 2017

just looked at my cdi and it has little needle like pins ,the cdi1s I have seen have much larger pins ,where can I get a cdi that has the little needle pins

Riaan Pretorius Aug 10, 2017

Halo i have a 125 symphony scooter but it feels like it is very slow. What can be the problem. Please help me

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Daren sturgeon Oct 6, 2017

I have a sinnis prime 49cc and I want it deristricted ! I spoke to sinnis and they said need I need to replace the cdi unit with a matrix 2 125 cc cdi unit as they do not do a derestricted 49cc one . Does this sound correct ?

tom fitzpatrick Oct 25, 2017

hi i have a sf50 racing is it restricted and where can i get non restricted gdi for it

art runge Nov 12, 2017

I own a Schwinn graduate 50cc scooter. I purchased a racing cdi and I’m still not getting over 30mph. How can I tell if this new cdi has a rev limiter? I’ve added a better/hotter coil, hotter plug, removed stock air box and added a cone air filter and it’s still slow. Help!!!! (If you can)

zippyBOI Jan 11, 2018

i have a taotao powermax 150, and i was made aware that it was only supposed to go about 55 to 60. however, my cdi box was modified to where the speed restrictor cable was cut, no other mods than that that ive seen after a year of riding it, and it now goes somewhere between 70 and 80. i can easily pass cars that are going at least 50, and recently ive gotten a bit more brave and found out that it can power wheelie about an inch. so i dont know if the cdi was restricted before, or if the world has lied to me about how fast 150s go lol

Wayne Jul 4, 2018

Hi Daniel

I recently purchased an electric motorcycle which, as far as I know, was setup and or made in Canada and is restricted to about 18mph, is there a way to make this electric motorcycle go a bit faster? I have an electric bike too and this goes about 26mph.

Rahul Rema Jul 17, 2018

A great piece of information. I think this is what I was exactly looking for. All tips in a single click. I would definitely try to follow these suggestions. I really enjoyed this post and I hope you will keep posting this kind of post in future.

Mohammadreza Aghakhani Jul 23, 2018

Hi
I have a Honda ruckus 50cc & i’m Living in Iran .i have bought a CDI box with 6pin for my scooter & I want to connect it but I don’t have the wiring & diagram of wiring .may you help me pls. Thanks

Ste Aug 4, 2018

I have a lexmoto titan 125 4 stroke efi can i fit a racing cdi to it. It has not got 1 it has a ecu

MIKE WATKINS Aug 9, 2018

Daniel. I have put in a 63cc kit, derestricted the variator, and put in a no rev limit CDI and the Havana Classic will still only go 40ish. What else can be done besides letting more air in thru the airbox, etc? I have been told to put a bigger gear in there too. What gear should be installed in a 2014 Havana Classic? Thanks!

DocSandy Aug 28, 2018

I just purchased a 2019 Lance Cabo 50cc moped and can’t get it past 35mph. I have tried two new cdi units. One blew a fuse and the other “popped” and smoked. Thus the engine wouldn’t start. Why won’t it work to derestrict the engine?

Nils Sep 15, 2018

Hi Daniel,
I have a Peugeot Speedfight 4 (AC) 4T-18 and want to change my CDI box to one no limit cdi box but i cant find it. I have take away my seat and look under it but i cant find it.
Do you now where to find it?

Morten Klaestad Sep 19, 2018

Hei
i have a peugeot Speedfight 4 4T .
Can i by a new cdi box of you ?
With no restrictions

Mario Sep 27, 2018

hi there

I am in a possesion of CPI popcorn, what kind of CDI can You offer me to run itmore than 50 km/h

regards

Mario

Archer Nov 15, 2018

Hi Daniel.
I have a Peugeot django 50cc two stroke could you please advise me about the CDI box to derestrict it.
Regards Archer.

Archer Browne Nov 15, 2018

Hi Daniel.
I have a Peugeot django 50cc two stroke could you please advise me about the CDI box to derestrict it.
Regards Archer.

scott pagram Mar 20, 2019

Comment: HI Daniel,
Looks like your the only guy I have found that makes sense in the world of unrestricting 50cc.
Please HELP, I purchased a new 2018 vespa primavera 4 stroke and the dealer did not think it was a problem to manually derestrict and now I have the scooter they don't want to know about it or me!!
Anyway is there any intel you have that I can use to get my local bike mechanic to do it myself? I can see heaps of cdi units on the web but would not know where to start?
kind regards
scott

RAYMOND B GARVEY Mar 28, 2019

HI DANIEL I HOPE YOU DONT MINDF ME GOING OFF PISTE A BIT , I HAVE AN AGILITY RS50 2T AND IT HAS A CDI IN THE NORMAL PLACE,THEN UNDER THE FLOOR IT HAS A SECONDARY BOX WHICH IS SMALLER,IS THIS AN ECU AND CAN YOU TELL ME WHAT IT DOES AND HOW I CAN TEST IT THANKS FOR YOU BRILL ITEMS THEY ARE VERY INTERESTING WARM REGARDS RAY

Pete May 23, 2019

Hi I've got a longjia 50qt-k on the exhaust it has a little box that has a pipe from it going to the air box any idea what that is for ? Does it restrict by not getting back pressure cause it's taking air in ? Also the cdi has 5 pins all the after market seem to have 6 and the wires are different colours so not sure how to wire up if you could help at all thanks Pete Uk

jo May 27, 2019

hi is it possible and how do you derestrict a ajs jsm 50 cc motorbike please

Teo Jerković Jun 2, 2019

Hi,

I have new SYM, Symphony ST (2019) 50cc, 4stoke, EURO4.
I want to upgrade it to unblocked CDI. Do you have any suggetions which one to buy and where?
Thanks!

Ville Oct 31, 2019

I have a same thing with SYM Mask/Orbit 3 2019 with EURO4 restrictions. So I assume this is a CDI restriction. But I am having trouble finding the proper unrestricted CDI to replace the original.
Any ideas anyone?

james n. lassila Jul 2, 2019

would this nakaru unrestricted cdi work on my 2018 kymko agility 50? as i tried putting a unrestricted cdi on my 2012 kymko agility 50 but all it did was made it extremely hard 2 start , thank your for your time

chris Sep 8, 2019

hi. I have a kymco super 8 125.my old cdi went off and I bought an oem one.The new one doesn't let the engine rev,and at the top speed of 60 km I get something like a rev limiter from the exhaust,like something is cutting the power to the spark plug

Graeme Morrison Oct 29, 2019

Got a 2018 Lexmoto ZSX-R 125 EFI anyone out know of a remapped ECU for this model in a way to get rid of or bypass the flat spot at 8000 rpm

KEN HALL Nov 5, 2019

Hi Buddy,
I am currently tinkering around with my soon to be 16 year old sons moped, its a Peugeot zenith ls sport, 1998 and wondered if you can tell me if it has a cdi restriction ?
I have taken care of the exhaust, air filter etc, got new reeds, high output coil and some other bits but would be usefull to know.
I live on an island and there are no hills !
regards

ken

Kaleb hepworth Nov 12, 2019

I have a honda lead 06 model 100 cc 4 stroke and thats restricted to 80

David Jun 2, 2020

No doubt that is great writing, I have gone through entirely and each word, it a great writing skill. Sometimes I was thinking to get over, but due to a heavy working schedule, I can not.

By the way, this has broadened my knowledge. Thanks for sharing.

Steve Sep 28, 2020

Hi Daniel...

will a CDI restrictor work on a 2015 scomadi tl50,, is it definitely an AC unit...

SC....

Chris Aug 21, 2021

Hello good afternoon. I have a Niu N sport 2020 Scooter and it can only go 50cc. I wanted to know if there is a way to derestrict the speed limit. I checked your site for a manual however the link provided came back in error.

Thanks again in advance.

Geoff senior Oct 13, 2022

Hi please help I have a 2003 kymco yup 50 2 stroke I want it to go more than 28 mph. The present cdi unit is black with 2 green plugs larger plug apears to have 4 wires and the smaller plug has 2 wires one of which is green. Can you assist me in getting a deristricted cdi as I am at my wits end and am sick of being misled by certain companies.
Kindest regards
Geoff
[email protected]

frodo Mar 10, 2023

Hello
i have a 2000 Suzuki UX50 Zillion and its restricted (it wont go past 47km/h)
the aiurbox is not a restriction because there is a sport filter installed
any tips on where could be a restriction on that bike?

Shohag Jan 27, 2024

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nshtare Oct 26, 2024

This is a great overview of CDI restrictions in 50cc scooters! It's interesting how regulations differ by country, especially with mechanical restrictions being phased out in favor of CDI limitations. If anyone's interested in more insights about scooter tuning and maintenance, check out <a href="https://nshtare.com/" rel="nofollow ugc">nshtare.com</a> for some useful resources!

شركة المثالي Jan 13, 2025

This is such a helpful and detailed guide! Knowing how to check if your scooter’s CDI is restricted can save so much time and frustration. Admin, I’d love to know—what’s the most common sign that indicates a restricted CDI, and how can riders address it?