3RACING 3RAC-NS40/LB Racing Serrated Locknut Set (8pcs)  [3RAC-NS40/LB]

3RACING 3RAC-NS40/LB locknuts for competitive setups

The 3RACING aluminium serrated locknut in light blue is specified to reduce loosening under vibration and repeated shock loads typical in racing. The serrated interface increases friction at the contact surface to hold clamp while allowing quick removal for pit-side service.

Material and finish notes

Machined aluminium keeps mass low while providing consistent thread engagement and serration geometry. The anodised light blue finish aids part identification and resists minor abrasion during normal use.

Fitment and workshop practice

Use these locknuts on metal-to-metal joints where the serrations can confirm seating. For race prep, verify thread fitment, start nuts by hand to avoid cross threading, and include them in routine teardown checks to confirm locking action.