World Champion ACER Racing Ceramic Ball Bearing Kit for Team XRay T4

Comes with the following:

12 pc 5x10x4mm ceramic ball bearings

4 pc 10x15x4mm ceramic ball bearings

4 pc 5x8mm ceramic ball bearings

2 pc 3x6mm ceramic ball 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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