RC18 and Mini-T Ball End Cap Replacement Set 3.9mm MT-028/V2 by 3Racing  [MT-028/V2]

3.9mm replacement ball caps for Mini-T and RC18 linkages

This 14-piece 3.9mm ball end cap set is a practical linkage replacement for Team Losi Mini-T and Team Associated RC18T / RC18R models. The kit supplies caps sized for 3.9mm ball studs used across steering and suspension connections, allowing quick part swaps during upkeep or setup changes.

The product targets Mini-T and the RC18 family. Each cap is compatible with standard 3.9mm ball studs and typical turnbuckle or rod-end fittings found on these cars. Replace worn caps to remove slop and maintain predictable joint movement.

Installation is simple: remove the degraded cap, check the ball stud diameter and how the original cap secured, then press or thread the new cap into place as appropriate. After fitting, verify steering range and suspension travel and adjust linkages if any slack remains.

When tuning, consistent socket seating matters for repeatable geometry. Fresh caps help you maintain stable steering and suspension behaviour between setup changes.