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Hop Up Kit; GX240, GX270, 9/11hp OHV, & 301; Stage 4 Hop Up Kit; GX240, GX270, 9/11hp OHV, & 301; Stage 4

For Building a Serious a GX270 or 301! Similar to That of the Stage 3 Kit, but Adds a Ported and Milled Head with Stainless Valves, Stud Kit, and Heavy Duty Valve Train Components.

Our Price: $830.00