The thirty Sbk848evo 2011 Usa (superbike 848 Evo) 9151-2801g 003 Gearbox component parts are all listed in this schematic.
A sample from the products for the 003 Gearbox include: Lay Shaft, Driven Gear 4th Speed T:26, Bearing, Needle, Spring Ring.
Of all the components used in this assembly the Complete Lay Shaft is the most expensive.