hey has any body run a rb concepts .12 i run the in my tmaxx and this thing just ripps i can't even keep it from wanting to do a wheelie i have used the fantom .15 when it first came out last year and i was not impressed with it at all i had a os .15 that had more botom end and top. i might have gotten a bad motor but our rep said they had a bad batch of carb's during the first prod motor's

hope this helps a little.

later teamatlas