Competitive Mini 4WD 17mm Ringless Race Rollers M4WD-31/PK Pink by 3Racing  [M4WD-31/PK]

M4WD-31/PK precision 17mm ringless race rollers

Engineered for 1/32 Mini 4WD competition use, these 17mm ringless rollers focus on reduced contact width and reliable seating geometry to aid consistent cornering behaviour. The machined aluminium cups are anodised for harder surfaces that resist abrasive wear during repeated runs.

Confirm post diameter and thread depth on the host chassis prior to installation. The rollers accept standard 17mm posts and common spacer configurations across MA, MS, AR, FM-A, VS and Super-II platforms. When assembling, set spacer stacks and screw engagement to achieve consistent axial clearance without inducing endplay or axial preload that could affect roll smoothness.

Service guidance for race use: routinely check cup seating and ball interface for micro wear, verify fixing torque with a calibrated driver, and replace spacers as needed to maintain repeatable alignment and clearance for peak performance.