3RACING 3RAC-NS40/BU Blue 4mm Serrated Locknut Set (8pcs) - Race Ready  [3RAC-NS40/BU]

Lock Down Your RC with 3RACING 3RAC-NS40/BU

Small parts make a big difference in durability and performance. The 3RACING 4mm Aluminum Serrated Locknut set in blue is built to hold critical points on your model firmly, giving confidence during high-speed runs and tight cornering. These locknuts are a practical upgrade for racers and weekend builders alike.

Grip and Vibration Resistance for Racing Use

The serrated face bites into mating surfaces to reduce back-off under vibration, which is valuable for track use and aggressive driving. Because they are aluminium, these locknuts add minimal mass while improving retention on wheels, shocks, and linkages.

Uses Across On-Road and Off-Road Models

These 4mm locknuts suit a wide range of RC applications from tight on-road setups to rugged off-road rigs. They are commonly used on wheel hubs, suspension mounts, and other threaded fittings where reliable clamping is important. The blue finish also gives a neat, race-inspired look.