Tough Trail Replacement - Tamiya 22087 - 33T Steel Idler Gear for BB01/TD2/TD4/XV-01 Models  [22087]

Upgrade the idler for tougher running

For drivers wanting a more robust drivetrain, the Tamiya 33T steel idler serves as a durable swap for BB-01, TD2/TD4 and XV-01 chassis types. It offers firmer engagement than the factory plastic idler to help the drivetrain endure heavy use.

Compatibility and how to fit

The Tamiya 33T steel idler is manufactured to match BB-01, TD2/TD4 and XV-01 mounting geometry. Replacing the original plastic MA27 idler is a simple job: remove the stock part, check spacers and bearings, then install the steel unit for a reliable upgrade.

Why steel outperforms plastic

Steel gears keep their tooth profile under stress and resist abrasion, so they last longer in demanding conditions. That reduces maintenance frequency and keeps power transfer consistent when running on rough tracks.