Can you derestrict a yzf r125

Posted September 23, Posted December 13, Posted January 22, It can be de-restricted. I have a thread about it on my website. Posted May 4, Hi there, I went to my dealer and found that my yam IS restricted, and they will not de-restrict it unless i show them my full license, now obviously i dont intend on doing my full license just yet, otherwise i wouldnt be on here. I know it can be done Many Thanks. Posted August 31, Just Ian Posted August 31, Blinding Posted August 31, Can anyone confirm if the top of the box can be rotated?

Posted August 4, Join the conversation You can post now and register later. Reply to this topic Only 75 emoji are allowed. Insert image from URL. Go to topic listing. Who's Online See full list There are no registered users currently online. Recently Browsing No registered users viewing this page. All the best Keith. Hi Those are not really restriction though no more than saying it is restricted by not being fitted with nitrous.

I would call changing those tuning at which point power largely comes down to how much money you want to spend. Kickstart wrote: Hi Those are not really restriction though no more than saying it is restricted by not being fitted with nitrous.

I think we can agree we look at it from different perspectives? XlonewolfX wrote: I think we can agree we look at it from different perspectives? Well in a way derestricing bikes is performance tuning then? XlonewolfX wrote: Well in a way derestricing bikes is performance tuning then? I'm gonna fit a Turbo to the Speed Four to derestrict the intake Hi,after reading the posts on this subject and feeling a bit miffed,i thought i should contribute a little as i feel comments along the lines of paying a lot of money for the type of bike,get a bigger bike and the likes are to be kind,both crass and off point.

From experiance on type i would make these comments and also dispell the myths on cats cdi units and the like.

Fact; some cats perform better than others but all cats without exception impede performance in simple form,the better a cylinder head flows [intakes and exhales] the greater the performance,period,cats restrict exhaust gas removal because firstly they cause a positive exhaust gas pressure between the cat and the exhaust manifold[not good for head gas flow] and then there are a dozen other reasons i won,t bore you with unless pressed.

The cdi unit in this case,is coupled to digital fuel mapping and factory fixed set to give optimum performance whilst achieving emissions compliance,hence it is possible to gain considerable power by removing the cat and tricking this unit to perform better,i will explain the mods i have done and the power gains a little later run out of space on this post.

Ok,my sons bike,09 model with miles,standard bike,power run on dyno, Mods done,cat removed, exhaust manifold matched to cyl head,inlet intake re worked and matched to inlet port, road run for 50 miles then second dyno run 15,7 kw 83 mph.

After re think and speaking with yam technical,stock bike has ignition retarded by 4 degrees to eleviate engine knock because of high cylinder head temps from low octane fuel and heat build up from cat. Second mods put inline electronic filter between ignition sensor and cdi to gain 5 degrees of ignition advance by delaying ignition signal [confusing the cdi],changed fuel to optimax[shell V power] and added octane booster. Further power run on dyno More devolpment now,i have a spare engine in bits doing a lot of technical calculations and measurements,so far i have found that the camshaft has plenty of lift but is shy on duration on both the inlet and exhaust side,so needs reprofiling plus i have,nt done anything with the electronic fueling yet,so will keep you posted as devolpments are made.

I wouldn't take much notice of any power readings given by a dyno operator who actually thinks potential top speed and acceleration can be measured on one. Also dosnt it change depending on whos dyno it is, so if your operator isnt the best your readings could be total bollocks. MPG, running costs and reliability 4. No adjustment Brakes mm disc front, mm disc rear Fuel capacity Share this on Twitter Share this on Facebook Email.

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