Home > Hop Up Kits > GX390, GX340, 420 Predator, & 11 hp up Chinese OHV > Stage 3
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Hop Up Kit - GX340 - GX390, 420 Predators, and 13/15hp Chinese OHV, Stage 2/3 Hop Up Kit - GX340 - GX390, 420 Predators, and 13/15hp Chinese OHV, Stage 2/3

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: $439.99