The Tamiya 15456 JR Setting Gear Set is a practical upgrade for Mini 4WD builders who want to refine AR chassis behaviour. Its multiple ratio options allow a tailored balance of acceleration and top speed.
This gear set fits AR, VS, Super-II, Super TZ, and Super TZ-X chassis types. On AR machines the selectable ratios provide useful tuning flexibility for different course profiles and motor choices.
Ratios from 3.5:1 to 5:1 give a useful spread for tailoring performance. The kit also contains a fluorine-coated gear shaft plus a 620 ball bearing to help reduce friction and promote consistent gear meshing.
The set includes a 1.4mm hollow lightweight propeller shaft alongside reinforced pinion and G-13 gears, all intended for straightforward assembly. These components are compatible with common AR-type builds and make gear swaps efficient.
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