Clutch Operating Pinion, for use on BSA models: B25, B40, B44, B50 & C15, Triumph models: TR25W.O.E.M: 57-2700 / T2700. B25, B40, B44, B50, C15 & TR25W Clutch Operating Pinion. 57-2700. 27223SKU: 57-2700 / T2700£3.95PriceQuantity*Add to Cart