3Racing M4WD-29/RE 1/32 4WD 9mm aluminum ball race rollers (ringless) spare roller for Mini 4WD  [M4WD-29/RE]

3Racing M4WD-29/RE 9mm ringless aluminum ball race rollers in red

These 9mm aluminum ball race rollers are a ringless design produced by 3Racing for Mini 4WD use. The machined aluminum bodies and ball-type contact surface are intended as direct spare rollers for common 9mm roller setups. The red anodized finish identifies the variant while keeping the visual language familiar for display models and workbench spares.

For experienced hobbyists: the ringless profile reduces overall roller diameter at the contact surface and can help where chassis clearance is tight. Check roller post alignment and spacer stack before final assembly to maintain predictable contact lines with guide walls. The part is supplied as individual rollers; compatibility depends on your existing axle and bushing arrangement.

Material and finish details are limited to the manufacturer description: machined aluminum body with red anodized treatment and ball-type running surface. Use common Mini 4WD fastening methods for installation and verify rotational freedom after mounting to avoid drag from adjacent parts.