How to slow down the buggy ? dualsky 870tf

[vrooom]

My 2wd buggy is bit too fast for me to handle.. its running 6.5t x12 motor on dual sky 870tf, i got programme card.

How can i slow it down like it is running 7.5t or 8.5t motor without changing the motor for slower ones? what setting in esc?

[Bigbainy]

Try turning down the end point on your transmitter?