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A crown of very good quality, identical to the original but much cheaper than concession.
Crown very good quality, brand TNT RACING, fits the RIEJU RS1 50cc. Toothing 44 teeth, width for chain and pinion of 420 (6).
Before buying, make sure that you have a flat crown with a screw spacing 60 as shown (8,25mm screw hole) with a Ø 60mm hub.