Boylett94 Posted March 27, 2015 Share Posted March 27, 2015 Hi lads new here anyway I'm picking up a custom dtr 125 tommorw will be my first 2 stroke after haveing a few shitty cheap Chinese bikes anyway the guy says it's bogging out because it needs re jetting to the new exhaust it has got a tzr micron pipe it currently has a 240 jet but bogging out at around 55 and not getting and higher speed out of it than that what jet size should I try? Thanks Link to comment Share on other sites More sharing options...
blackhat250 Posted March 28, 2015 Share Posted March 28, 2015 Hi boyle " downsize the main, to get peak performance, but not too small, get a couple of smaller [ 220/205 . ] do short full throttle runs then shut of engine and check plug colour, whats colour is it the now, And what air filter is on it, Link to comment Share on other sites More sharing options...
Moderator Airhead Posted March 28, 2015 Moderator Share Posted March 28, 2015 Have a read of other DTR threads Heres one Link to comment Share on other sites More sharing options...
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