If Anything the Sirios don't last as long as the O.S.'s They are sick motors, because of how they are made. Trust me Sab. The O.S. is better and faster than a stock sirio 12. Of coarse those people are going to tell you that they don't have problems because thats what they run, the opinion is almost automatically baised. When Novarossi's get into there high rpms, they slowly lower them so that they don't over rev. Sirio's just keep on going meaning that they can over rev easier. But right now if you want to get a sirio, you should get an sti, which is there factory modified version. But the evo 3 still have problems. This is their new line of engines but why isn't the kyosho team running them? Because there are still changes that need to be made. Team Orion makes the hara parts for the R40. You can't get them from Hpi. Also the sirio should not cost more than 200 dollars, and from what i know the TZ is over 200, make sure they're not getting away with murder. [:-][
] If they have the bridgeport race this weekend are u going?