O.S. ENGINES Speed B21 Adam Drake

If you’re looking for premium nitro power, this is it. O.S.’S top-shelf speed series gets the Adam Drake signature treatment with a super-slick Dlc-coated crank and tungsten counterweight, ceramic rear bearing, race-proven 21J3(B) carburetor, and included 6.5 and 8.0mm carb reducers. It’s everything you need for race-winning horsepower to compete at the highest level. $530 osengines.com