well if your only 13 not the greatest ride with not the most experience i would go the 140 for now they still have plenty of power you may find the 150 too much for your age they have a lot torque and dont like stay 2 wheels on the ground haha but the 140 still has heaps of power you will enjoy and can still learn a bit on
umm so i should go for the 140xr? & another question my lil bro which is 9 wants to get a bike,, i thought of a pitpro 50...but do you reckon this would be good for him?? ive never seen him ride but hes riden a pw50 a few times so hes only a begginer lol!
my dhz is a bit crap now cause i thrashed it to hard and the engine went KUMAMAMAMAMBOOM!!!!!!! i chucked a wtf and oil spilled out the side.. i went back to ken and said GIMMIE NEW BIKE!! he said brb and hopped in his car and did max doughies and left..
For your lil bro, maybe look at a pitpro 110. They are 110cc, semi auto with 10inch wheels or I no that one bloke on here bought a 12/14 combo one. The 10's would probably give the seat height you want