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

A Step up from the Stage 1, This Kit Is Designed to Improve the Power and Durability of GX340s and GX390s.

Our Price: $186.00