If you are looking for a direct replacement for brake rotors for the Wallke H9, then this is what to get.

I ordered the 203 mm rotor and caliper brackets needed. They have all the parts you need to build an awesome brake system or pick one of their premade systems! I upgraded my Happy run G 300 Pro front brake to 203 mm! Everything fit perfectly, and now I have as much stopping power in the front as I do in the rear! For some reason, Happy run went with a smaller rotor on the front and larger on the rear. You can upgrade it, thanks to DYI ISLAND. Super fast shipping also.

produit de très bonne qualité un peu lourd(369g) mais c'est normal (2,8mm).

Great quality, I installed on my e-bike stop quickly, highly recommended, it a product that I will buy again