Hop Up Kit, 208cc DuroMax, Stage 4 Our Price: $518.00 Engine Kit, GX270, 292cc (+.160) Stroker, Q (1" Shaft) Our Price: $367.00 Header, 212 Predator Ghost, Karting Our Price: $47.68 Hop Up Kit, GX200 & 6.5 OHV Clone, Stage 4 Our Price: $617.00 Hop Up Kit, 208cc DuroMax, Stage 2 Our Price: $248.00 Hop Up Kit, 420 Hemi Predator, Stage 3 Our Price: $388.00