175RC Aluminum 4mm Serrated Locknuts (Blue)

175RC Aluminum 4mm Serrated Locknuts (Blue)
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175RC Aluminum 4mm Serrated Locknuts are a great choice for any vehicle that uses an M4 wheel nut. Heavily serrated and made from lightweight aluminum, these M4 locknuts are light weight and will hold the wheel securely. 
Verified Owner
Thursday, Aug 9 2018 (about 2 years ago)
175RC Aluminum 4mm Serrated Locknuts (Blue)
absolute garbage, put these on my 2wd sct mod,made 5 laps .the left front wheel fell off. it seem like the nylon insert needs to be thicker to grip the threads better(imo)