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Classic K'NEX Gears and Chain
The K'NEX gears shown below all fit onto classic K'NEX rods. The chain links listed below can be joined to create chains that are then driven by K'NEX gears. The dimensions shown are approximate.All the K’NEX parts we sell are in NEW condition, and have been obtained directly from the manufacturer or through one of their subcontractors. We do not sell used K’NEX parts.
Click on any image to display full details, view some examples of K’NEX models using gears, or find out what the Available figure means against each part.
Just K'NEX Gears
A pack of 6 K'NEX gears, at a 20% discount. Ideal gift for the K'NEX enthusiast.
View a model that uses some of these gears
View a model that uses some of these gears
Just K'NEX Chain
The chain links in this pack can be used to make a chain which is 2 metres (78 inches) long, driven by four red gears.
As used in many larger K'NEX sets, such as the huge K'NEX Ball run. 20% discount
View Handy Hint G3 to see how the chain should be attached to the gears.
As used in many larger K'NEX sets, such as the huge K'NEX Ball run. 20% discount
View Handy Hint G3 to see how the chain should be attached to the gears.
K'NEX Chain link Small 20mm
Any number of chain links can be joined together to make a chain.
The Chain link Small is approx 20mm (0.8in.) long, and it requires 2 x K'NEX Sprocket gear Black to drive the chain.
As used in all current K'NEX roller coaster sets.
As there are two sizes of chain link, we would strongly recommend checking the size you need before ordering.
The Chain link Small is approx 20mm (0.8in.) long, and it requires 2 x K'NEX Sprocket gear Black to drive the chain.
As used in all current K'NEX roller coaster sets.
As there are two sizes of chain link, we would strongly recommend checking the size you need before ordering.
K'NEX Chain link Large 32mm
Any number of chain links can be joined together to make a chain.
The Chain link Large is approx 32mm (1.2in.) long, and it requires 4 x K'NEX Gear Medium (red or yellow) to drive the chain.
As there are two sizes of chain link, we would strongly recommend checking the size you need before ordering.
The Chain link Large is approx 32mm (1.2in.) long, and it requires 4 x K'NEX Gear Medium (red or yellow) to drive the chain.
As there are two sizes of chain link, we would strongly recommend checking the size you need before ordering.
K'NEX Gear small Push-on Grey
Approx. 25mm (1in.) diameter with 14 teeth. Push-fit onto any classic K'NEX rod.
View a video of a model that uses one of these gears
View a video of a model that uses one of these gears
K'NEX Crown gear large Yellow
Approx. 130mm (5.1in.) diameter with 82 teeth, with an extra hole near the rim as shown.
K'NEX Sprocket gear Black
K'NEX Sprocket gear Black with 6mm hole. Suitable for use with K'NEX Chain link Small 20mm only.
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