jha

The kit was put together by my dealer. I think it are the parts of the previous GasGas TXT pro 200. Cilinderhead has a top cooling water connection. Exhaust pipe bolts rotated as on the previous gasgas cilinders. Main jet unchanged Idle jet from 52 to 48 Squish set at 1,5

Hello Guy, Herewith the drawing of the flywheel old and new. The weight old/new about 306/548 gram. Mass inertia will be more than doubled I guess. Very happy with the mod, less stalls and still very responsive. Flywheel GG125.pdf

I did the same and put a 200 kit on a 2017 GG 125TXT racing. Made a flywheel weight just using available space without a spacer. Can send you the drawing that I made.

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

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.

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.