Owners of the Kyosho OPTIMA will find the OT221B gear set a straightforward replacement when original gears show wear. Built to align with OPTIMA mounting, this set helps preserve drivetrain consistency during club runs and local events.
The Kyosho OT221B suits the OPTIMA family and offers a snug mesh to reduce gear lash. It is a good choice for hobbyists who want reliable, predictable gearing for regular practice and light competition.
Install the OT221B on a clean chassis and use standard RC maintenance tools. Verify gear mesh and bearings after fitting, and apply recommended light lubrication to reduce friction and wear.
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