The 3RACING M4WD-31/PK 17mm aluminum ball race rollers in pink are engineered for precise cornering control and consistent bearing performance. The ringless aluminium bodies reduce rotational inertia while maintaining structural rigidity expected in tuned race parts.
These rollers minimise lateral friction between roller and track wall to improve steering fidelity on technical sections. They integrate with common Tamiya chassis types such as MS, MA and AR, enabling targeted setup changes without major chassis modification.
When tuning, use these rollers to refine entry and mid corner stability; their lower mass assists acceleration and reduces deceleration through turns. Check bearing pre-load and spacer alignment during installation to optimise free spin and avoid unwanted lateral slop.