XRAY - Model racing cars

Hello All,

I've finally been lucky enough to purchase an XRay T1. It's second hand but has been well cared for. However, I need a little help and I will apologise in advance for asking what seems to be a basic question.

It is my ultimate intent to enter our local stock competition where 27T motors are the rule. I've got a Trinity Monster Horsepower Pro and am wondering what sort of spur and pinion gear combination I need to buy to get the most out of this motor.

Thanks in advance for any help or advice.

Impossible to tell without knowing the circuit you are driving on and knowing which car you drive