Mini 4WD 17mm Ringless Aluminum Ball Rollers M4WD-31/PK (Pink) by 3Racing  [M4WD-31/PK]

17mm ringless aluminum ball rollers M4WD-31/PK in pink

These 17mm aluminum ball race rollers are designed for 1/32 scale Mini 4WD cars and use the M4WD-31/PK ringless ball construction. The anodized aluminum cups produce a hard wear surface and the machined low-profile contact edge suits builders seeking reduced friction and slimmer clearance at the track.

Check roller boss diameter and mounting hardware before fitting to ensure correct thread engagement. These rollers are compatible with standard 17mm posts and common spacer and screw setups used on MA, MS, AR, FM-A, VS and Super-II style chassis. Because they are lightweight spares, pay attention to spacer stacks and screw length to avoid interference with stabilisers or side stays.

For maintenance, inspect the cup and ball seating for wear and confirm screw torque regularly to prevent loosening. For stored models, consider removing exposed metal rollers or applying light corrosion protection to slow surface oxidation.