News – Go Engine USA is now taking preorders for the GXII-5R race engine!

We are now taking dealer preorders for the GXII-5R, and also have cut prices on the GX engines. For dealer and wholesale ordering in the USA, Mexico, and Venezuela only, please send an email to, and one of our sales reps will contact you promptly.

This is our new 5-port race engine, which has been redesigned from the ground up.

What’s new:

  • New CNC modded, epoxy-ramped, and clear coated crank.
  • Factory tuned and ported sleeve
  • Reworked 2 needle carb w/ newly tapered needles and reworked throttle slide.
  • All new crankcase
  • New turbo head button w/ heat dissipation fins. This allows for a smaller heatsink on top.
  • Top heatsink is a new shape, lower profile, and further lightened for light weight and lower center of gravity.

For more information, visit

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