The Kyosho IG113-17 is an aftermarket replacement second gear offered for compatible GT drivetrain assemblies. With its 17-tooth profile it is intended as a direct spare for maintenance, repair or setup changes.
Fitting notes for competent builders: open the gearbox, record the gear stack order, and check pinion-to-spur contact. Remove the worn second gear and install the IG113-17, ensuring smooth rotation and correct backlash before reassembling. Return any clips or collars to their original locations and confirm motor pinion clearance prior to running.
Tuning perspective: this 17T second gear sets the intermediate ratio and affects mid-range torque delivery. Keep pinion and spur choices consistent to maintain designed drivetrain balance, and inspect shafts and bearings to avoid introducing vibration or premature wear.
Best used as like-for-like maintenance replacement or when reinstating drivetrain geometry after competitive use. Cross-check part numbers with your chassis documentation before installing.
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