@aqidracer
brother i am new here but i got experience of both gtos 125 n 110. they are hell bikes tell u 1 thing when 110 shifts from 3rd to 4th it start feels like flying on the road literaly and when gto 125 shited from 4th to 5th gear i feels like u cant stop it if u got something in front lolz...
now come to the point first step try to buy the gto from some uncle type person , u can find them if u keep on looking while u r standing on red signal, offer them good price and tell them some petrol consumption draw backs of the bike blablabal... if u get that bike i bet u can find the origional cylinder bike may be having 50 size piston without bore BINGO. this is what u want,
on the other hand if u get the bike from market then u must must change the head cylinder full kit pricing more than 13000/-Rs ek aur jugaar hay
get gto110 ok then put any 100 size piston cylinder full kit with gto125 japanese crank shaft and install it in gto 110, ok then do 1500 running with 2 oil changes (ZIC oil) then continous 300kmh in 4th gear not 5th gear . then change oil, this will make your gto meter sui tooor bike dear, and whenever u do race or check with 5th gear u can put 1 tea spoon karwa tail and see what happen , bike didnt want 5th gear after putting oil.
1 other main thing is carburator if normal 11o is doing 28plus in 1 liter then carborater is working fine both of 110 and 125...
hope u get the proper way out of your prob.
ek aur baat agr ap ko boht zoor say gto aai hui hay to lahore main 2 ya 4 aisay mechanics hain jo tayyar gtos baich rhay hain lahore hotel macloard road pay laikin wo kafi zyada paisay maang rhay hain.
baki agr ap cg125 maintain kar rhay ho real racers ki trah to yeh to koi masla he nai 1 time investment bus uskay baad ap hospital main hahhaha i am sorry yeh mera ek kanjar frnd janab hafiz saab kaha kartay thay aur unkay sath aisa ho bhi gya tha laikin unki gto pay nai balkay abba kay scooter say jatay huay bcoz us din uskay aba uski gto lay gay aur woh aba ka scooter hahahahaha.
takecare burn the rubber not soul.