Science Fair Projects Kits For Every Kid!

Science Fair Projects Kit Name -

Brief Description of this Kit:

This is a SuperTigre G90 the updated version of the S90K. The main differences between the two engines are that the G90 is a one-piece crankcase (S90K was a two-piece) and the G90's muffler is a bolt-through-the-crankcase (S90K muffler bolted onto the crankcase).

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