Mainshaft Pinion, for use on BSA models: Bantam D14/4 & B175.O.E.M: 90-1693Teeth: 22TNOS - New Old StockNOS Bantam D14/4 & B175 Mainshaft Pinion 22T: 90-1693. MT90-1693SKU: 90-1693£19.99PriceQuantity*Add to Cart