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 alternativesScrew Set A is a general-purpose hardware pack for Mini 4WD tuning work, covering common jobs such as raising roller mounting positions or building double stays for extra rigidity. It's intended as a stock of assorted screws for the kind of small modifications racers regularly make to a chassis.
Because it's simply an assortment of fasteners rather than a chassis-shaped component, Tamiya lists it as compatible with essentially its entire Mini 4WD lineup, from the original Type 3 chassis through current releases. It differs from the companion Screw Set B (No.233) in being described as a general assortment for whatever job comes up, rather than a fixed breakdown of specific screw lengths and nut counts — useful as a running stock of spares for a racer who's regularly drilling, raising rollers or adding stays rather than following one fixed build plan.
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.
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.
Racing Mini 4WD turned 40 in 2026. What Tamiya actually released for it: the Zenperor 3 body special, the Dash-1 Emperor Type 3, and two anniversary motors.