Mini 4WD Setting Gear Set: AR (15456) vs FM-A (15516)
Tamiya 15456 and 15516 bundle five gear ratios, 3.5:1 to 5:1, but fit different chassis. Compare contents, price and fit before buying the wrong set.
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Browse available alternativesA large-diameter wheel and tire set pairing carbon fiber-reinforced 3-spoke wheels with a soft, grippy slick tire compound. The set covers a full car, with two each of front and rear wheel/tire assemblies, and gives the car a distinct look next to the kit-standard wheels. Some bodies may need trimming to clear the larger wheel diameter.
Larger-diameter wheels raise a car's top speed for a given motor RPM, since each rotation covers more ground, but they also raise the car's height and center of gravity -- why this set suits racers optimizing for speed on smoother, less technical layouts rather than tight, obstacle-heavy courses. The carbon fiber reinforcement adds stiffness over a plain plastic wheel, resisting the tire squirming under hard acceleration and braking, while the soft slick compound trades durability for maximum grip on clean, dust-free surfaces. Because the wheel diameter is larger than kit-standard, it's worth test-fitting the body shell first, as several stock bodies sit close enough to the wheel wells to need trimming for clearance.
Tamiya 15456 and 15516 bundle five gear ratios, 3.5:1 to 5:1, but fit different chassis. Compare contents, price and fit before buying the wrong set.
A Mini 4WD wheel piercer preps tyres for through-shaft fitting. Learn what it does, when you need one, and how to use it without damaging a wheel.
Choose a Tamiya Mini 4WD gear set by the exact chassis, motor layout and instructions. Check ratio, gear cover and event rules before changing the drivetrain.