I haven't got my old chain, how do I work out what type of chain I need? Although your chain may be missing, the likelihood is that you still have the sprockets attached to the engine and back wheel. All dimensions are in millimetres A sprocket's roller seat can also be called the width in most cases If your sprocket's roller seat width equals 3mm you will need a 6mm chain If your sprocket's roller seat width equals 4mm you will need an 8mm chain If your sprocket's roller seat width equals 6mm you will need a 420 chain If your sprocket's roller seat width equals 7mm you will need a 428 chain If your sprocket's roller seat width equals 8mm you will need a 50H or a 530 chain (these two chains are exactly the same, except 50H has a 2mm greater width / pin length) I haven't got my old chain, how do I work out how many links I need? To work out the chain length you need, use string or sellotape to stretch around the two sprockets, then measure the length. T8F 118 LINKS CHAIN GOLD CHAIN DIRT BIKE G-SCOOTER... – Vicedeal All dimensions are in millimetres / centimetres If you need a 6mm Mini Moto chain, divide the circumference by 1., 29 If you need an 8mm Midi Moto chain, divide the circumference by 1., 61 If you need a pit bike 420, 428 or 428H chain, divide the circumference by 2., 62 If you need a quad 50H, 520 or 530 chain, divide the circumference by 3., 28 Which machines do these parts fit? This chain fits Chinese pit bikes. Search for 520 Quad chain If your chain has a pitch of 16mm and a width of 20 / 22mm you will need a 530 / 50H chain. Search for 530 / 50H quad chain. Pit Bike Quad Motorcycle Chain Gold 420 106L Links Drive Chain 50/90/110/125cc DIRT PIT PRO Thumpstar BIKE DUNE | Australia Pit Bike Chain If your chain has a pitch of 16mm and a width of 18mm you will need a 520 chain. 420 REAR CHAIN SPROCKET 37 TOOTH ATV QUAD PIT BIKE RS14 Search for 428 pit bike chain If your chain has a pitch of 13mm and a width of 19mm you will need a 428H chain. Search for 428H pit bike chain. Many Chinese parts crossover to fit other chain set-ups and sprockets, so please check the dimensions and pictures to confirm its suitability for other models. Search for 8mm Midi Moto chain If your chain has a pitch of 13mm and a width of 15mm you will need a 420 chain. Use the diagram to see how to get find out you sprocket size (according to its width). Pit Bike / MX / Motorcycle / Quad drive chain available in 420 and 428 sizes, in many different lengths (number of links) to suit your bike Search for 420 pit bike chain. Now that you know what pitch, width and length you need, use the formula table below to work out how many links you need: Take the length of the chain in centimetres then divide it by whichever formulae is applicable to your machine type. Search for 6mm Mini Moto chain If your chain has a pitch of 8mm you will need an 8mm chain. 530 chain 76-100 Links With chain link chains fit ... – Vicedeal It comes with a free break or split link as standard
