The Kyosho FA621 Idler Gear Shaft is intended to uphold consistent gear engagement in Fazer D2 models. It is a practical spare part aimed at preserving drivetrain smoothness and prolonging component life.
Properly aligned gears reduce noise and slop in an on-road car. The FA621 is manufactured to match Fazer D2 tolerances, providing stable support and resistance to everyday wear from track or street use.
For hobbyists making incremental setup changes or replacing fatigued parts, the FA621 makes repairs simple, letting you refocus on gear ratios and suspension balance.
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