#110 main #38 slow jet,upgrading main kit,fit for 250cc water cooled engineDimension manifold intake diameter:30mm,air intake outer diameter:50mm(detailed fitment see description)Package including: electric choke,air mixture adjustment screw,needle jet,spring,clip,vacuum piston,float set and chamber,air cut valve,heater port,overflow nozzle and tubingArrival within 7-15 days (Ships from and sold by )pls confirm The size of the product meets your requirements before you purchaseNote:please allow 0.5-1 inch difference due to manual measurement.1inch=2.54cmSize:Dimension manifold intake diameter:30mmAir intake outer diameter:50mmReplacement for:Helix CN250Elite CH125 CH150 CH150DJoyner Sand Viper 250cc 250 series such as SZ250DLMC-13-250 VIN-Prefix BALI/LJ4/L8YMC-54-250 VIN Prefix LJ4/L8YMC-62-250 VIN Prefix L4SMC-68A-250 VIN Prefix LJ4Baja Reaction BR250Baja Dune DN250and other water cooled 250cc enginePackage Included:Carburetor x 1pcKeychain x 1pcAbout After-sales service:First of all