The gearbox clutch is nice replacement parts for 47cc 49cc dirt bike.<br/>Features:<br />This system slows down the power at the engine before it goes to the chain.<br />This gearbox comes in a short and long type, this is the longer version with more distance between drive sprocket and clutch bell centre.<br />If changing from the short gearbox you will need a longer chain, if changing to this gearbox from the short version you will need to remove some chain links.<br />Reduction ratio is 3 to 1.<br />Fits 47cc 49cc dirt bike.<br/>Specifications:<br />Material: Metal<br />Number of Teeth: 14<br />Chain Size: 8mm (T8F)<br />Fixing Hole(s) Size: 7<br />Distance Between Fixing Holes (lengthways, centre of eye to centre of eye): 71mm / 2.8in<br />Distance Between Fixing Holes (widthways, centre of eye to centre of eye): 71mm / 2.8in<br />Overall Length: 210mm / 8.27in<br />Package Weight: 870g / 30.69ounces<br />Package Size: 210 * 110 * 70mm / 8.27 * 4.33 * 2.76in<br/>Packing List:<br />1 * Gearbox Clutch