The one thing I will say about the stock belts is that they are quieter than than some of the replacement choices on amazon. I've used a set of gates sold by boosted and a set of the kutrick belts. While the kutrick is going to last you a lot longer (they claim 3x the distance) its at a cost of increased noise. Just be aware that 3rd party belts may be louder than stock. I switched back to gates belts for now.
Gates Belts: $16.50
https://www.amazon.com/gp/product/B07FXBX48N/
Kutrick Belts: $16.50