nope stock 28 mm i put the 38 on my dt with the 250 engine before it was a 250
ive got a 15 tooth front standard rear only difrence between the 15 nd 16 is with the 15 you can always get in top gear weres it used to be flat with the 16 if u dint ring the **** out of in 5th
no dont do it ive spent all my money on petrol and oil this week like 120 quid and my tyire has the noblies peling back sure its fun but its made me skint haha
I THINK its altering and polishing ports, changing the powervalve and exhaust chambers shape (the part inside the barrel), head skim, 'race' piston, and a couple of other things.. probably says on the website..
Not too sure if I'm honest, by the phasing I think its making sure its completely smooth turning, lower friction, less vibration, less wear, more power
the problem is. its okay doing **** to the barrel and piston. but theres still the carb and all that stuff holding it back. to see any kind of results you would have to change the lot.