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Markws80

Gasgas txt 2018 125

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Can you get a 200cc kit to turn the 125 txt into a 200cc ? 

I know they did a lot for the old pot model did not know if it would fit the new txt 

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It can be done, but rides totally different then the older GASGAS TXT200.

No standard kit I suppose. My dealer bored a 125cc cilinder to 64mm.

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Standard cilinder head TXT200.
I think also piston equal to the former TXT 200, together with cilinder former TXT200 (in this case older TXT125 bored to right fit with piston).
(Older cilinders and pistons a little higher, combination cilinder and piston should be OK was delivered by my dealer)

Other parts:
- Wider smal end bearing of former TXT200
- Base packing combination resulting in squish of about 1,5mm, smaller more agressive and not fits my style (50+).
- Further made new flywheel weight, filling all available space behind cover, without adding cover spacer.
- Let the exhaust reducer in place (more docile?, did not check)
- 5mm longer bolts cilinder head.

More power at low rev's, hoped for less aggresive at high rev's.. not being the case.
These new 125 have new carters with minimal volume, higher volumetric efficiency.
I like it very much and will not return to 125.
 

P1000327.jpg

P1000328.jpg

P1030447.jpg

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Yes it can be purchased through your local S3 dealer. S3 supply the complete kit for all TXT's (horizontal and vertical water pipe heads). We have done quite a few of them.

Basically it is a 250 piston with a smaller gudgeon pin and matching head and cylinder.

 

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Thanks for all you help 

I am going to do the 200 set up 

not the s3 225 kit 

i think the 200 would be better then the 225 

Edited by Markws80

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I rode a 225cc kit when it was first done.

Excellent bike like a very soft 250 with a little bit of zip, i think ill go back to that soon....

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225 kit not possible on GASGAS 125 with new crankcase (2015 or later?)
Or carters should be machined.

 

 

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On 7/9/2019 at 5:18 PM, jha said:

225 kit not possible on GASGAS 125 with new crankcase (2015 or later?)
Or carters should be machined.

Do you know what needs to be machined 

dose it need to be re jetted?

 

 

 

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On 7/7/2019 at 8:24 AM, jha said:


 

 

 

P1030447.jpg

Hello, my flywheel on my '17 TXT Pro is below. Could it be aftermarket? 

I have a friend with a '17 School 125 and it revs up SO much quicker than my bike and is a lot more fun to ride. I understand the stock flywheel is the same for both bikes. 

Can I just unbolt the three bolts and run no plate?!

Do I have to pull the flywheel out to get rid of the plate, or do just the 3 bolts hold it on? 

IMG_7701.jpg

Edited by sammyd173

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