The Tamiya 3451519 center shaft is a focused upgrade for hobbyists tuning a TRF421 chassis. Precisely made to tighten drivetrain play, it helps deliver smoother power transfer and steadier handling during faster laps.
Made to fit the TRF421, this center shaft uses robust construction to reduce drivetrain slop and improve stability under load. The result is crisper throttle response and more predictable corner exits when you push the pace.
Whether adjusting gear mesh or dialing suspension, the Tamiya 3451519 integrates cleanly with TRF421 setups so you can concentrate on fine tuning other systems for race day performance.
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