90mm drum brake available with or without drynamo generator Dynamo generator front hub features 3.0-watt headlight power supply A356 aluminum hub shell with 9mm solid nutted axle (140mm overall axle length) Light and Brake lights sold separately FT 36H B/O 3/8 Aly Sil 1350g DRUM 100mm 109 109UPC/EAN/GTIN: 4710944258240