🦁 How To Derestrict A 125 4 Stroke

You can make your Honda Vision moped faster by making mechanical alterations to the moped's air intake and variator systems. Unscrew the two bolts holding the intake case to the top of the variator case with a socket wrench. Unscrew the single bolt holding the intake case to the connection point on the underside of the rear wheel well. 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. 2 stroke engines are much much much more dependant on gas flow than 4 stroke. The restriction is mainly done with back pressure. I have heard that some are restricted in the air filter area as well. Lexmoto claims 150mpg for the Aspire 50, and it's not that good, but hard-working mopeds often drink more fuel than a gently ridden 125. Topping up the tank after 41 miles, it took just 1.87 litres, which works out at 99.6mpg, about what I'd expect from a geared 50, though in easier terrain it might have given a bit more. If you want more speed the next thing is to change the exhaust and main jet for larger one and change the Computer for unrestricted one as original is limited to 8500 RPM. Than it will go about 80-85 Kmh. 07-02-2019, 10:55 AM #5. joelbo. Just got my new RS4 50 Replica modell 2015 sport bike. Unfortunately the RS4 mopeds sold in Sweden are restricted to 40km/h. I am not interested in breaking speed records or so, I have an A class motorcycle license and own a BMW F800R and a Honda CBF125. I just don´t like that the RS4 will not perform as much as it can. The only downside is the seat height which for a learner bike is quite high. However it's great fun and leaves you smiling after every ride. Ride quality & brakes 5 out of 5. Engine 4 out of 5 Variator: These can be restricted by design. Others will have a "ring" on the drive boss that limits the travel of the variator. Some will have a shoulder on the drive boss that will also limit the travel of the variator. A few will have a restricted ramp plate that will need to be swapped out. This link would be suggested for more info. SOURCE: de-restrict an aprilia rs 125. Hate to disagree with tina783, but you may have restrictions in place, there is two on the aprilia rs 125. if your on a L plate then the bike should be restricted to 11.5w of power, which is about 15 bhp, when it's de-restricted should be around 34bhp. First is the power valve or a RAVE Valve as some Step by Step, CDI, etc. CDI Derestriction. The Aprilia RS125 comes with a CDI restriction. It retards ignition around 6000rpm so the bike can pass EU emission tests so they can be manufactured. This makes your bike perform very poor at 6000rpm and does not let the engine pull. Derestricting this will invalidate your warranty. A 50cc 4 stroke bike is only going to go not that fast man. You can end up spending a fair amount of time and money to add things onto the bike to make it go faster but itll also lead the bike breaking down faster. This includes; bore kits that include new jets for the carb, new rollers for the variator, new gaskets, and drop in a bigger AJS firefox 50cc. its not going to be easy, most shops i just looked at dont have AJS as a maker. rule of thumb for derestiction, this makes you scooter a little quicker to around 40-50mph but this is dependant on rider weight and what you add to the machine to gain more power. Variator : usually this is restricted to stop it forcing the belt 125cc 2-stroke engines are restricted, because they can produce significantly more than 15hp. 125cc 4-stroke engines tend to be designed to produce only about 15hp. As such, they're already running at full power. Sorry. _____ '10 SV650SF, '83 GS650GT (it lives!), Questionable DIY dash project, 3D Printer project, Lasercutter project 4 stroke are much more reliable than 2 stroke but you dont really get the same power than a 2stroke from a scooter p.s if you browse the web you can get all kind of upgrades for chineese bikes i.e cdi bore kits etc but if your going to pay money for doing that your better off part x the bike and get a known brand Whenever the term “derestriction” is mentioned, it’s usually around scooters and mopeds that belong to the 50cc engine class. In many countries, 50cc scooters and mopeds contain a special “restrictor” that limits the maximum top speed. Therefore, if you derestrict your scooter, it means you remove any restrictor mechanisms that limit EBU1Bw.

how to derestrict a 125 4 stroke