3Racing M4WD-31/PK 1/32 scale 4WD ringless 17mm aluminum ball race rollers (pink) spare roller for Mini 4WD chassis  [M4WD-31/PK]

3Racing M4WD-31/PK 17mm ringless aluminum ball race rollers in pink

These 17mm aluminum ball race rollers are produced by 3Racing for use on 1/32 scale Mini 4WD models. The ringless ball construction and anodized aluminum cups are described in practical terms for experienced hobbyists: the rollers present a low-profile, machined contact surface and are intended as direct replacement rollers where 17mm diameter rollers are required. The pink finish is anodized rather than painted, which affects surface hardness and wear characteristics compared with softer coatings.

Fitment and compatibility should be checked against the roller boss diameter and mounting hardware on the host Mini 4WD chassis. The design is compatible with standard 17mm roller posts and with most common spacer and screw arrangements used on MA, MS, AR, FM-A, VS and Super-II platform builds. Because this is a lightweight spare part, evaluate spacer thickness and screw engagement to maintain proper clearance and avoid interference with stabilizers or side stays.

Maintenance notes for long-term use: periodically inspect for wear on the aluminum cup and the ball seating area, and verify screw torque to prevent loosening. For collectors storing finished cars, remove exposed metal rollers or apply light corrosion protection to avoid surface oxidation over time.