Doesnt mean you use Power Belt or HKS Belt or even Gates it can last for many years. The difference between racing and street is you dont overhaul the engines every 2 weeks and change the timing belt every now and then. Wear and tear plus the temperature underneath the hood will increase the risk of belt snapping.
The best way to double check is to remove and flip it over. When you bend it, you will know from the threads how long its gonna last. Doesnt mean it stiffens up and harden its dead. You cant tell by just looking at it and pressing it with your fingers.
The belt is worth between RM400-550.