The Kyosho FA621 Idler Gear Shaft is intended to maintain reliable gear alignment in the Fazer D2 range. It serves as a practical replacement to help preserve drivetrain smoothness during normal use and tuning sessions.
Correctly matched parts help prevent uneven wear and poor gear engagement. The FA621 is produced to fit Fazer D2 tolerances and supports steady on-road performance under typical running conditions.
Install the FA621 to replace a worn shaft and regain consistent gear operation without needing complex adjustments, letting you focus on gearing and suspension setup.
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