The Kyosho IG113-17 second gear is supplied as a like-for-like service part for compatible GT-series gearboxes. It carries a 17T tooth profile and is intended for routine maintenance, repair or tuning when an identical spare is needed.
For installation, experienced hobbyists should remove the gearbox cover, note the existing gear stack orientation, inspect pinion and spur engagement, then swap in the replacement second gear. Check for free rotation and correct mesh, reinstall any split collars or circlips, and torque gearbox screws evenly to avoid distortion. Verify clearance against the motor pinion before finishing reassembly.
On tuning impact: the IG113-17 17T second gear influences intermediate ratio behavior, altering mid-range acceleration and response. Use it with complementary pinion and spur selections to retain drivetrain balance; worn bearings or mismatched tooth counts can cause noise or premature wear, so inspect adjacent bearings and shafts when replacing the gear.
Use this unit as a direct replacement during gearbox servicing or when restoring drivetrain geometry after track use. Always confirm parts compatibility against your chassis manual before fitting.
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