WPL C24 brushless - too fast!

I installed a brushless motor in my C24 and it´s fast! Actually a little too fast to handle. The motor I use is a Racerstar 2435 4500 kv, bought in combo with 25 amp esc. It´s mounted to a simple metal gearbox from URUAV with a pinion gear I took from a MN 260 motor. It´s a fun experiment but it´s useless in terrain and generally hard to control. Next step will be to try a brushed 390 motor, lower the center of gravity and widen the stance to hopefully make it more driveable. This brushless motor will fit right into a WPL 2 speed gearbox so that is another upcoming experiment.