Hop Up Kit, 440 Duromax, Mud Motor Kit, Stage 4 Our Price: $1,281.00 Hop Up Kit, 212 Predator OHV (Non-Hemi), Stage 2 Our Price: $285.00 Stud Kit, Head, DED Billet Heads, GX200/Clone & Animal Our Price: $24.99 Hop Up Kit, GX200 & 6.5 OHV Clone, Stage 1 Our Price: $54.47 Hop Up Kit; GX240, GX270, 9/11hp OHV, & 301; Stage 2 Our Price: $186.00 Engine Kit, 214-236cc, 2.310 Billet Stroker Crank with Wiseco Piston: GX200, Predator, & Clone Our Price: $523.00