According to different sources, future regulations will allow for the modification of the cylinder head, including intakes, valves, springs and cams. Crankshaft and connecting rods, however, should be left untouched or only substituted with components made of different materials but weighing as much as the original. The proposed price cap for electronics cannot exceed the €8,000 mark (roughly $11,000), while the one for suspensions and brakes will remain the same. The maximum retail price for a homologated bike will be €40,000 (almost $55,000), while the final number of units to be produced to receive homologation will decrease from 1,000 to 500. Before these changes are officially confirmed, however, no team can itemize the budget for 2015 and therefore proceed with negotiations with the riders.