GY6 and CN250 CVK Main Jet Kit for 150cc and 125cc GY6 carburetors and 250cc 4-stroke water-cooled 172mm carburetors, includes a size range from #100 – #140.

• Keihin Round Style Main Jet Kit
• Available in 10 Piece or 50 Piece Sets
• Includes The Following Sizes: 100, 105, 108, 110, 114, 115, 120, 125, 130 & 140
• Thread Size: M5x0.80
• Overall Length: 8mm