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I-wonder skd mod question pulley

pulley
electric-skateboard

#1

i got sk-d board link https://i-wonder.en.alibaba.com/product/60455933468-803166455/Certified_I_WONDER_Boosted_SK_D_Electric_Skateboard_With_Dual_Motor_1200W_2_DC_Brushless_With_Hall_Sensor.html
So i want to increasing the speed so
-what wheels size do i need to replace
-How many pulley teeth ?
thankyou