New belt drive addition for the popular Versaplanetary gearbox by Vexpro (not included), dual 775pro motor and RS7 encoder (not included). Kit has necessary components and instructions to work with planetary gearbox V1 and V2. Pick desired pulley ratio 22:25 (1:1.136), 17:32 (1:1.882), 12:36 (1:3) above. New BAG motor option available for pulley ratio 22:25 (1:1.136), 17:32 (1:1.882).