The gearbox clutch is nice replacement parts for 47cc 49cc dirt bike.

Features:
This system slows down the power at the engine before it goes to the chain.
This gearbox comes in a short and long type, this is the longer version with more distance between drive sprocket and clutch bell centre.
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.
Reduction ratio is 3 to 1.
Fits 47cc 49cc dirt bike.

Specifications:
Material: Metal
Number of Teeth: 14
Chain Size: 8mm (T8F)
Fixing Hole(s) Size: 7
Distance Between Fixing Holes (lengthways, centre of eye to centre of eye): 71mm / 2.8in
Distance Between Fixing Holes (widthways, centre of eye to centre of eye): 71mm / 2.8in
Overall Length: 210mm / 8.27in
Package Weight: 870g / 30.69ounces
Package Size: 210 * 110 * 70mm / 8.27 * 4.33 * 2.76in

Packing List:
1 * Gearbox Clutch