Hop Up Kit, 224cc Predator, Stage 3 Our Price: $331.00 Hop Up Kit, GX200 & 6.5 OHV Clone, Stage 4 Our Price: $618.00 Hop Up Kit, 224cc Predator, Stage 2 Our Price: $249.00 Engine Kit, 236cc for Tillotson 72mm Block, Stroker Kit Our Price: $229.00 Engine Kit, 214cc, 2.225 (+.060) Stroker, 2.756 Bore Our Price: $245.00 Hop Up Kit, 208cc DuroMax, Stage 3 Our Price: $344.00