Engine Kit, 214-236cc, 2.310 Billet Stroker Crank with Wiseco Piston: GX200, Predator, & Clone Our Price: $523.00 Hop Up Kit, 208cc DuroMax, Stage 1 Our Price: $56.72 Header, Mini Chopper, Side Outlet; GX200, 6.5 OHV, & 212 Predator; Straight End (1") Our Price: $24.99 Engine Kit, GX390/420, 420cc, +.200 Billet Crank, 88mm Forged Piston Our Price: $923.00 Hop Up Kit, 212 Predator Hemi, Stage 3 Our Price: $315.00 Flywheel, Billet, 6626, 212 Predator Hemi, Kohler 212 Our Price: $120.00