Mini 4WD Gear Set Compatibility Guide
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.
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Browse available alternativesA set of three reinforced 40mm stainless steel screws, used as a mounting axle for rollers, brake parts, or stays that need to sit away from the chassis. The stainless construction resists corrosion and offers greater strength than standard screws.
Also included are aluminum spacer collars in 1.5mm, 3mm, and 6mm thicknesses, four of each, which stack on the screw to fine-tune roller or brake height across a wider range of setups.
This screw set is listed as compatible across all nineteen current and legacy chassis types, Type 3 through ME, reflecting its role as a generic mounting axle rather than a chassis-specific part. Because the collars come in three thicknesses that can be mixed and stacked in any combination, a builder gets far more incremental height settings than the fixed spacers bundled with most stay and roller kits.