Heavy-Duty Idler Upgrade - Tamiya 22087 - 33T Steel Idler Gear for BB01/TD2/TD4/XV-01 Models  [22087]

Stiffen your drivetrain with a steel idler

If you want to reduce drivetrain flex and cut down on recurring part swaps, the Tamiya 33T steel idler is a direct-fit option for BB-01, TD2/TD4 and XV-01 chassis. It replaces the weaker plastic idler to give a firmer gear mesh and steadier power delivery.

Fitment and simple swap

The Tamiya 33T steel idler is made to mate cleanly with BB-01, TD2/TD4 and XV-01 layouts. Swap it in for the stock plastic MA27 idler to get improved durability with a straightforward installation that most hobbyists can do with basic tools.

Durability benefits of steel gears

Steel resists deformation and wear far better than plastic, so the idler maintains consistent tooth profile under load. That reduces slop and the need for frequent replacement, especially if you run on rough surfaces or push higher torque setups.