Cylinders/Gaskets GY6 50 139QMB (20)

NGK CR7HSA replacement spark plug.

NGK IX Iridium spark plugs were designed specifically for performance enthusiasts. The fine-wire center electrode ensures long-lasting durability and a consistently stable spark. Iridium alloy has an extremely high melting...

High performance cam for 139QMB engine. Use this camshaft when upgrading the cylinder and head to get the most performance from your new 72 or 82cc kit. 25.8mm intake lobe...

50cc cylinder kit for all 50cc 4-stroke Chinese scooters using GY6 139QMB / QMA engines. An ideal low-cost replacement kit for worn or damaged top ends. 50cc cylinder kit for...

To increase the power of your 50cc 4-stroke, Polini offers you this Polini 80cc Alu 4-Stroke AC cylinder piston kit at a rather advantageous price! With excellent manufacturing quality (“made...

88cc cylinder for you, although this is not a bolt-on item for most QMB 139 bikes. Most of the time, engine cases need to be cut. Order part number 1400-1001,...

Cylinder Material: primary aluminum alloy with high silicon content, hardened and tempered, cylinder liner with application of silicon carbides in a galvanic nickel matrix and cross-smoothing by two diamond passes,...

NCY 88cc Aluminum Performance Cylinder Head. High quality alloy cylinder head designed to work seamlessly with the 1100-1237 88cc cylinder kit. Give your QMB139 the power to get some respect....

Seal for Malossi 88cc 139QMB/QMA cylinder kit. Suitable for several 4-stroke models such as Kymco Agility 4T, Sym Simply 4T & more. Cylinder: 3113243, Piston: 3413245 / 3413245.A0 / 3413245.B0...