The XRAY 320905 - XB2 5G Gearbox Conversion Kit is made for racers who want a lighter drivetrain for the XB2 series. This upgrade improves responsiveness and suits competitive setups, but it is aimed at experienced hobbyists who accept trade offs in durability for speed.
This 5G gearbox conversion is an advanced option to sharpen handling and acceleration. It delivers noticeable performance gains but needs careful setup and monitoring because gears can wear quicker under high power or heavy braking.
Use #106210 - HUDY Graphite Grease on all internal gears and service them frequently. Lubricate after each hour of running and set the slipper clutch so the front wheels lift slightly, following the XB2 manual to avoid overtightening.
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