SHIBATA GRK5-R S Next Generation 1-10 RWD RC Kit RED PURPLE BLACK [R31 House] GRK5-R with a high-mount center motor layout while retaining the vertical motor mount that is a characteristic of the GRK series. The newly installed "triple idler system" between the pinion gear and spur gear effectively transmits the motor's counter torque to the gear unit while improving control over accelerator work. The motor mount unit can be rearranged to choose between two patterns: mid-motor and rear-motor specifications to suit your preferences. Available in Red, Purple or Black.