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 Predator, & 13/15hp OHV; Stage 2 Hop Up Kit; GX340-GX390, 420 Predator, & 13/15hp OHV; Stage 2

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: $146.00
Hop Up Kit, 420 Hemi Predator, Stage 3 Hop Up Kit, 420 Hemi Predator, Stage 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: $341.00
Hop Up Kit, GX390 & 13/15hp OHV, Stage 3 Hop Up Kit, GX390 & 13/15hp OHV, Stage 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: $375.00