Illegal Yamaha 125Z Racing Bike

This article is taken without permission from http://www.mysportbikers.com/portal/index.php?
option=com_fireboard&Itemid=27&func=view&
id=1017&catid=52&limit=6&limitstart=6.
Hope they will forgive me!

Please go here for the original content of the page.

What was modded on that bike…?
block and piston
– Original Yamaha 125zR block.
– Bored tu 57mm using DT125(enduro) RK brand piston.
– Ported and polish the block.

Engine head
– OEM header.
– Skimmed the header and polished it.

Clutch
– Standard Y125z manual clutch system.
– Original Yamaha friction plate.
– GT Racing clutch springs.

Carburation
Actually that bike got 2 carburetor unit.
– Carb Mikuni for Suzuki Panther 150. [Main jet 300, pilot 28.5]
– Keihin PWK 28mm. Ported to 30mm. [unknown]
– paired with FCCi Racing reed valve.

Ignition
– Fully Standard. Even the CDi is standard.

Exhaust
– BM Power + YY Pang exhaust manifold + custom made end can silencer.

Suspension
– Standard OEM front and rear suspension system.

Final drive
– Using 15/34 MCS sprocket setup with TP Racing 415 chain.

Wheels
– COM* 17×1.4 alloy rims with hi-polish 125z hubs.
– Camel 50/90 tyre. very2 kecik punya tayar.

Brakes
– Standard front disc brake system.
– Rear disc brake system was removed due to no use of using it.


Security

– None. This bike was staying in the house all the time except when it was needed on the road.

Which shop do all this ?
– my friend’s house. Of coz la this is his bike.


How fast can it go ?

– 180km/h on 4th gear. after that cant calculate due to meter limit is only at 180km/h.
– 16sec for a kilometer.

Please remember: RACE ON TRACK ONLY! DRIVE SAFELY!

13 thoughts on “Illegal Yamaha 125Z Racing Bike”

  1. In Johor,the new model of 135lc modified and reach up to 267km/h with custom made Thailand parts.You can find in Skudai.Owner is a chinese.The bike was also fully modified with Racing Boy parts.If you have $$$,confirm everything you can reach but also have limit la…

  2. hi chesecake,
    no offend too, but i own a 125z as well, and modification few years back while i was in kolej, used RX-Z carberator, with LC piton, one piston ring, sprocket 14/35, and my 4th gear was hitting the 180km/h already, and can easily exceed 200km/h when using 5th & 6th gear, i tried with RR & RX-Z & etc.it is possible, when i ride, i use only upto 5h gear, 6th gear is too fast already bro, so yes, it is posible bro….and the feeling is wow!laju!!!!!!!!!!!!!

  3. No offend bro but 180km/h on 4th gear is impossible based on your mods. Again it is impossible to go 180km/h on 4th gear based on your mods.

    If u said 5th gear at 180km/h then i believe. 5th gear can go even faster than 180km/h.

    But if 4th gear happen to go until 180km/h on your bike, then it must be something with your speedo.

    Peace.

  4. i use y125z..i jus wanna make it a little bit fast..boleh makan rxz sudah la…but without touch block(mengusik block moto,jus kai standart jerk block)..
    apa yg perlu wat ek??
    tolong beri nasihat..

    -fresh border-

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