3Racing M4WD-31/RE ringless 17mm aluminum ball race roller for Mini 4WD 4WD racing chassis spare part  [M4WD-31/RE]

3Racing M4WD-31/RE 17mm ringless race roller for Mini 4WD

This 17mm ringless aluminum ball race roller is supplied by 3Racing as a spare for Mini 4WD models. The component is intended for use on performance-oriented 4WD racing chassis and is presented as a direct replacement or alternative to standard rollers. The ringless construction reduces contact points inside the roller housing compared with ringed variants; experienced hobbyists will recognise where that characteristic affects fitment and rolling behavior on tuned setups.

Compatibility notes: the roller is compatible with common Mini 4WD roller mounts and axles used on racing chassis. It is not a complete upgrade package; installers should verify axle diameter and spacer requirements before fitting. Use with Wild Mini 4WD or Scale Mini 4WD series is not recommended, and tuning guidance here applies only to performance chassis such as MA, MS, AR, FM-A, VS and Super-II where applicable.

Finish and handling: the part is anodized red and machined from aluminum. Hobbyists should avoid overtightening roller screws and check for lateral play after initial runs. Routine cleaning and inspection for burrs will preserve rolling consistency and reduce chassis wear.