This item is for the pair of lower SOHC bevel gears - Item 0421 and either item 0422 (International Crankshaft Bevel Gear) or item 0423 (Manx Crankshaft Bevel Gear). See the individual items for the description of each. Please state if you require International or Manx crankshaft gear when you place the order. These gears are fractionally cheaper when bought as a pair