Description
Crankshaft bearings Ball bearings -BB1-3055B- -20x52x12mm- (SKF 447205 A) for 50 cc Piaggio engines for highest speeds.
Special bearing that resists even the highest loads. This racing bearing with increased clearance and a special cage is only available as a quality bearing directly from Polini and from Japan.
Top Tip not only for every racing motor.
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