Originally Posted by nemo812
hi! I just wanted your opinions on these two engines. Which one is better?
novarossi NSR12 S5 vs. sirio S12 TUP EVO2
overall, italian engine is the best. for more reliability, go for novarossi. sirio evoII is more suitable for long track but the life span is lesser. go to sirio thread to get pros n cons about that engine.