The capacity for two stroke R/A G.P. rises up from 1400cc to 1600cc.The capacity for four stroke R/A G.P. with turbo or compressor stays at 1600cc.Only one unit must be produced to receive the homologation. The hull, including upper and under hull are free but must stay in the sizes from the I.J.S.B.A R/A Division rules. Sponsons must be IJSBA race legal. You can use any kind of composite materials. You can use any kind of engines but it must be based on a homologated ski or R/A engine. If you want to make your own engine, this engine must be homologated by the EJSBA only for the G.P. classes. Full modifications are allowed (crankshaft, cylinders, pistons, crankcases and more). Four-cylinders maximum. Minimum weight is 216 kg for two stroke and 270 kg for four stroke Transmission and pump are free but must stay inboard. The decision from the Technical Director is final about homologation of any G.P.
