hi all i have a dt125x 07 can get 80mph 85 at a push but i never rely go past 50mph so i am going to change the sprockets front or back to get of the line farster and to pull the front up without reving the balls out of it . just need to now what's better front or back ? and how meny teeth to add or take off ? and where to get them from i have had a look on the web but no luck thanks your help will be very nice
Alter the rear sprocket as it gives the transmission an easier time.I'd try a 3 tooth bigger rear to start with.If you cannot find one i guarantee these guys will sort you out.If they can't find it then they will make it one off http://www.bandcexpress.co.uk/
i got one from my yamaha shop £5.00 fited it today and wow only one tooth less but what a diferens the front lifts in 1 and 2 very happy top speed has droped by 10 mph but 0 to 60 has improved i would reconmend tis to every one with a dt125x if your not botherd about top speed