Home > Hop Up Kits > GX340, GX390, 420 Predator, & 13/15hp Chinese OHV > Stage 3
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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: $154.00
Hop Up Kit, 420 Hemi Predator, Stage 3 Hop Up Kit, 420 Hemi Predator, Stage 3

Now You Are Getting Serious! A Step up from Our Stage 2 Kit, This Will Further Empower the 420, Producing up to 20+ HP.

Our Price: $329.00
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: $360.00