Top Perf blue Racing cast-iron 70 CC runner, nrg, zip sp, sr

With the Due and the DuePlus, TopPerformances offer a line of high performance cast-iron racing cylinders. The different types feature up to 8 transfer ports for maximum gas transfer and hence performance. Power output up to 14 Bhp. For all liquid-cooled Piaggio engines Compatible with: - Aprilia: SR 50 04-Piag._S - Derbi: GP1 50 LC_S - Gilera: DNA 50 LC_S, Runner SP 50 -05_S, Runner SP 50 06-_S - Piaggio: NRG 50_S, ZIP SP 01-_S