Traxxas 5182A Ball bearing, black rubber sealed (20x27x4mm) (2)

Pair of 20x27x4 mm black rubber seal ball bearings. A step above blue-seal bearings, black-seal bearings offer an even tighter seal for ultimate protection and less maintenance in dirty environments. 

Internal bearing for original X-Maxx axle carriers and steering blocks. For current-spec bearing, use 5196A.