Engine Kit, GX270, 292cc (+.160) Stroker, R (2 to 1 Gear Box Cranks) Our Price: $519.00 Hop Up Kit, GX200 & 6.5 OHV Clone, Stage 4 Our Price: $617.00 Hop Up Kit, 460cc (10-Bolt) Engines Our Price: $1,285.00 Gasket Kit/Engine Set, GX120 UT2: Genuine Honda Our Price: $31.29 Hop Up Kit, 224cc Predator, Stage 2 Our Price: $251.00 Hop Up Kit, GX390 & 13/15hp OHV, Stage 3 Our Price: $407.00