Front Right Spindle for the Pride Revo (SC64) (DWR9990C003) Razor Pocket Mod Kiki Drive Medical says that this

Drive Medical says that this is compatible with rollators bearing a serial number beginning with #2M

then we have it for you

WTB: W010-0540

This all-in-one assembly replaces the Transaxle for the Golden Buzzaround EX (GB118/GB148) Scooter which is no longer available as a single transaxle unit

Additional Features: Specifically designed to meet the high demands of professional mountain bike racers

Front Right Spindle for the Pride Revo (SC64) (DWR9990C003) Razor Pocket Mod Kiki Drive Medical says that thisThe front right spindle for the Pride Revo (SC64) is part of the Revo's front frame assembly. The spindle is the part that connects the wheel assembly to the front axle. This is the Pride Mobility factory OEM part, and is the correct replacement item for your Revo scooter. Pride Mobility: DWR9990C003