269 Answers. Unless you find a small "restricting washer" between the head and the exhaust pipeThen usually there is no easy means. In the past these "washers" were put in place to reduce performance, the idea was as the riders skills improve the washer can be removed. It also was a way for parents to keep their children from zooming flat I wouldn't have thought that a Third World 4-stroke 50cc scooter was capable of doing much more than 30mph, unless you fitted a turbo. 2-strokes used to be restricted by fitting plates to the intake port or carburettor, or a stop which limited the throttle slide, reducing the amount of air/fuel entering the engine. Derestricting 50cc. Posted: 13:47 - 01 Jan 2019 Post subject: Derestricting 50cc. Well, it happened. The Boy, now 17, has a 50cc derestricted by the trivial method of unplugging a wire and plugging a switched live into where the original was plugged in (fitting a SPDT switch or a DPDT switch with poles in parallel would be ideal). This Schwinn scooters can be some of the slowest scooters on the road. The top speed is around 25 mph out of the box. You can solve this problem super easy w How to derestrict a scooter / moped under 3 minutesThe cdi used in this video [GY6] : From the dealer, the derestriction (speed) kit that Kymco sends with the scooter is a derestricted boss and an 82 main jet (the scooter ships with a restricted boss and 78 jet on it). My dealer upjetted and changed out the boss at no extra cost. The exhaust that is on the Like is indeed restricted, but not by a washer. n04s. Sachs roadster 125. xvs 125 resurrection bobber. Posted July 12, 2009. is it 2 stroke or 4 stroke? if its 2 stroke. performance exhaust, air filter, remove washers, rejet carb, uprated spark plugs, differant front sproket, uprated cdi, reboreing. if its a 4 stroke. new exhaust, air filter, rejet carb, uprated sparkplugs, uprated cdi, differant Derestricting 50cc. Posted: 13:47 - 01 Jan 2019 Post subject: Derestricting 50cc. Well, it happened. The Boy, now 17, has a 50cc derestricted by the trivial method of unplugging a wire and plugging a switched live into where the original was plugged in (fitting a SPDT switch or a DPDT switch with poles in parallel would be ideal). How do i derestrict a cagiva roadster 125 2 stroke. The engine is practically the same as a mito , except its air cooled and has no power valve . it sits at 80 but i have read on cagiva forums that they can be deresticted and will top at 110, now i am a 27 year old that wants to play with my toy so all positive help is very welcome. Posted by A high powered 125 4 stroke single would need too much maintenance for a street bike just by the nature of the beast. Look at the maintenance schedules of something like a KTM 500EXC and it is beyond what a lot of people would be prepared to live with. That is the price of the power. The power could be obtained but that would be the cost. its a 125 4 stroke! its not restricted. everything is the way it is to give you the best balance between performance and reliability . if you change the exhaust then it will make it flow a little better but its injection so the icu/ecu/cdi or whatever you call it will be out of sync with the engine. the "secret modified part" is most likely either a re-profiled cam or a ecu chip which will

how to derestrict a 125 4 stroke