Home > Hop Up Kits > GX390, GX340, 420 Predator, & 11 hp up Chinese OHV > Stage 2
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Hop Up Kit - GX340 - GX390, 420 Predators, and 13/15hp OHV, Stage 2.5 Hop Up Kit - GX340 - GX390, 420 Predators, and 13/15hp OHV, Stage 2.5

As step up from the Stage 1, this kit is designed to improve the power for the GX340s and GX390s along with improving the durability.

Our Price: $449.99