World Champion ACER Racing Ceramic Ball Bearing Kit for the Traxxas STAMPEDE VXL 2WD 3607. Comes with the following ball bearings:

15 pc 5x11mm ceramic ball bearings

4 pc 5x8mm ceramic bearings

Oiled, not greased, with 100% synthetic SIN oil for super smooth and fast action. Uses lightweight diamond polished silicon nitride ceramic balls. Feel the difference and race faster, longer with these lightweight, fast and extremely durable ceramic bearings.

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