The Kyosho FA621 Idler Gear Shaft helps maintain accurate gear engagement in Fazer D2 cars. It is intended as a service part for keeping drivetrains running smoothly during routine use or light tuning.
Using the correct replacement parts avoids alignment issues that lead to noise and wear. The FA621 matches Fazer D2 geometry to provide firm support for the idler gear under typical on-road loads.
Swap in the FA621 when shafts show play or wear to quickly get your car back on track; this part supports straightforward servicing without complex modifications.
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