XT125-X

ste.cameron25 · Nova Slayer Joined: 05 Aug 2013 Karma :

Hello I have just got a xt125-x bike and was wondering if I can change the head to a bigger one like a 250 or 350 I have had a look on Google but didn't find anything except big bore kits for 660cc cheers
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If you carnt make it then buy it..

daemonoid · World Chat Champion Joined: 27 Jun 2008 Karma :

ste.cameron25 · Nova Slayer Joined: 05 Aug 2013 Karma :

Bigger cc
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If you carnt make it then buy it..

weasley · World Chat Champion Joined: 16 Oct 2010 Karma :

Changing the head will make no difference to cc. The "cc" of an engine is the swept volume, which is defined by the bore and stroke of the cylinder and piston. To make bigger cc you need to make bigger bore or longer stroke (or both).
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~~Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT~~ | BMW F900XR TE

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

Why would you buy a 125 and then immediately want to increase it's capacity? Seems crazy to me unless you want to ride it illegally on L plates.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F; Cheap project: CBR900RR FireBlade
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

P.addy · Red Rocket Joined: 14 Feb 2008 Karma :

No

Either sell it and buy a bigger bike or make do with that one.

Northern Monkey · World Chat Champion Joined: 17 Nov 2013 Karma :

https://www.ebay.co.uk/itm/NEW-YAMAHA-YBR125-big-bore-Cylinder-PISTON-150cc-kit-/131074694250?pt=UK_Motorcycle_Parts_13&hash=item1e84a91c6a

The XT125 uses the YBR engine. This would work, but is probably made with cheese

daemonoid · World Chat Champion Joined: 27 Jun 2008 Karma :

ste.cameron25 · Nova Slayer Joined: 05 Aug 2013 Karma :

Well it's not road registered and seem slow on take off I heard that you can take some weight off the flywheel to make it lighter as its a learner bike just won't it to go bit faster cheers and thanks for the replys
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If you carnt make it then buy it..

smegballs · World Chat Champion Joined: 28 Oct 2007 Karma :

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

OP has no clue about bikes or engines or tuning.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F; Cheap project: CBR900RR FireBlade
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

ste.cameron25 · Nova Slayer Joined: 05 Aug 2013 Karma :

Pointed out the obvious ther did you....thats why where all here to ask daft questions and get silly answers
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If you carnt make it then buy it..

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

ste.cameron25 · Nova Slayer Joined: 05 Aug 2013 Karma :

None it's off road bike hasn't been registered for on road..and I did in the start off my post it's says can I change my head to a bigger size!
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If you carnt make it then buy it..

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

ste.cameron25 · Nova Slayer Joined: 05 Aug 2013 Karma :

Yeah course it's stolen even got the papers for it lmfaoo cheers anyways I get the idea know
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If you carnt make it then buy it..

Ste · Not Work Safe Joined: 01 Sep 2002 Karma :

Out of interest, if it's unregistered what papers have you got?

ste.cameron25 · Nova Slayer Joined: 05 Aug 2013 Karma :

Bike has one owner I got recite and proof off purchase and some other papers think ther to register it on road not sure
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If you carnt make it then buy it..

P.addy · Red Rocket Joined: 14 Feb 2008 Karma :

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

Do you have the original receipt from a Yamaha dealer to the person you bought it from? (If not, how do you know it's "one owner"?)
If you do and it has also legitimate intact frame numbers matching receipt, then you could probably find someone that would swap it for a decent off-road bike.
Quite common for 17 year olds to want to swap their dirt bike for something they can use to get around.

Oh and yes - I've seen plenty of cases of people buying stolen vehicles 'with papers'.

SQL · World Chat Champion Joined: 09 Aug 2012 Karma :

£50 to rag around the feeld init

Ste · Not Work Safe Joined: 01 Sep 2002 Karma :

Does it have the frame and engine numbers?

Have you got details of what it's original number plate was?

If it is all legit then like G say, you can sell it and get a much better off road bike for the money. Thumbs Up

P.addy · Red Rocket Joined: 14 Feb 2008 Karma :

We aren't gonna shop you in bruv.

'onest.

stevo as b4 · World Chat Champion Joined: 17 Jul 2003 Karma :

Agree with all the sus sus stuff above!
But if it's an off roader only even though it's only a 10-11bhp engine, you need to down gear that mofo for riding off road. lower overall gearing will make it pull better, climb better and generally faster within the limitations of it's power to weight ratio.

If that aint enough, the get yourself a wet N2o Kit with a big bottle on the back! Thumbs Up

ste.cameron25 · Nova Slayer Joined: 05 Aug 2013 Karma :

Yeah all numbers match has a manufacturer papers it was never registered for on road didn't ask where he got it from still smells newish guy wanted ot for the field use I have oready phoned DVLA About the bike befos not stolen I do t have a license and for it to be on road will be pointless in my case. I like your style steveo but fook that for a laugh
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If you carnt make it then buy it..