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The new RB ceramic ball bearing will fit your on road or off road RB Concept C6 engine as well as you Speedline Xenon engine. Its bullet proof ceramic balls for long stroke engines will offer you a quicker acceleration and longer life thanks to a lighter weight and higher strength. The ceramic balls will also avoid you using steel balls.
Part #: 010121-011050/C – Main Ball-Bearing 14.2×25.3 Ceramic