From AMain Hobbies:
ProTek RC’s popular Samurai .21 racing engine has been updated to provide better fuel mileage and smoother acceleration. The Samurai V2 benefits from a new, efficient composite carburetor that when race-tuned will yield fuel mileage up to 14-minutes per tank of fuel. The new carburetor also helps smooth out throttle response for more precise control.
Racers can expect the same Samurai rip down that back straightaway that’ll have their buddies asking, “what engine is that?” The Samurai V2 will hold a super-consistent tune that will idle forever—like the original version of the Samurai, the V2 has been constructed by one of the world’s premiere engine manufacturers.
Please use this link for more information on the ProTek RC Samurai V2 .21 racing engine: http://bit.ly/2qEgnVE