TZR 125 retricted

[empire08]

I have a yamaha TZR 125 ( model 1996, 2troke)
run at the highest speed 130k/h ( restricted version )
Please tell me how to make my bike be able to run at a higher speed ( unrestricted version )

[EnergyInducti...]

If I remember rightly, it's something to do with the YPVS (Yamaha PowerValve System) But I have NO experience whatsoever with powervalves...
Only other things I can think of are intake restrictions (Air filter, Carb, Manifold) or rev limit on the CDI, I wouldnt have thought the exhaust system would be restricted... But I could be wrong...
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Riding: Yamaha RXS100
Aiming for : RD350 + Test
Dream bike: Suzi RG500 Gamma

[bladerunner]

Which model TZR 125 is it?
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's

[empire08]

please help me

[tsmith]

i think the TZR used the same engine as the DT and TDR 125.

Try googling "derestrict DT 125" and "derestrict TDR 125" and you should get some good hits.

From memory, powervalve and exhaust usually restrict those bikes. A fully working Powervalve with a servo motor will make the most difference - you can hear it make the whirring sound when you turn the key. You can peg them open but you lose low down power. There may be a restrictor cone in the exhaust - removing that will help as well.

[G]