This is the new release S-254 evo engine This is the most powerful 25.4 cc on the market is a Cast crankcase produced engine with recoil starter. The S-254 25.4 CC engine comes with 4 bearings .25.4 cc. The S-254 crankcase is excellent!. It comes with everything you see in picture. The carb is a WT-929 which is a WT-257.
We have dynoed this motor with our Torquemaster pipe. we have found this to be most powerful motor on the market in stock forum hands down. the motors dynoed at 5.01 hp at 13,500 rpms and 2.02 lb's of torque. this by far more powerful then the zenoah,sikk,cy, and any 25.4 cc motor out of the box out there.
So if you are a weekend Boater are a racer you wont find more h.p. for the money out there.