Description
Piston Kawasaki KX 85
When to replace a piston?
A motocross piston must be replaced regularly. To be sure to replace it at the right time, it is best to always refer to your motorcycle's user manual.
If you don't have one and can't find it, you should know that it varies according to the use (motocross, enduro, sand only, etc...), the level of the rider (a good rider is a good rider) and the type of bike.), the level of the rider (a beginner doesn't use the engine like an elite rider) and the engine capacity (the more the engine is able to take turns, the more the replacement will have to be frequent: for example, in motocross, the piston of a 125 will be replaced more often than the one of a 250 with equivalent rider and use).
Note: Don't forget to take a gasket bag!
How to choose a piston?
Choosing a piston depends largely on the cylinder! If the cylinder generally wears out more slowly, it wears out all the same. The piston-cylinder assembly must therefore always be in perfect harmony. To do this, you must be equipped with tools to measure the cylinder of your motorcycle. It will then be necessary to respect the dimension of play cylinder piston of origin, for example:
- New motorcycle:
- Cylinder bore = 54 mm
- Piston bore in standard dimension (dimension A) = 53,95 mm
- Dimension to be respected: 54 - 53,95 = 0,05 mm
- After several hours of operation:
- Measured cylinder bore = 54.01 mm
- Piston bore to be selected = 54.01 - 0.05 = 53.96 mm
- In order to respect the clearance, we will choose a dimension B
Several possibilities are still available to you, since there are forged or cast pistons, bi-segment or mono ring etc... Our advice? If you don't have any particular skills in engine preparation, always choose the same type of piston as the original one and just make sure you respect the rating!
About the Athena brand:
Athena is a well-known brand in the world of two-wheeled vehicles, both for its motocross parts and for other disciplines. Initially a manufacturer of gaskets, it has strongly developed to produce all types of spare parts and has become known for the high quality of its production.
Choosing Athena is to be sure to have top-of-the-range spare parts for your two-wheeler.
Athena Kawasaki KX 85 piston technical data:
- The two-stroke pistons are made of silicon 4032
- Four-stroke pistons are made of silicon 2618 (same material used for Formula 1 pistons)
- Contains 3% copper for better heat resistance
- All pistons are forged using a precise heat treatment process, which allows production tolerances of only 0.005 mm
- Forged piston machining ensures maximum lightness
- Kits include piston, rings, piston pin and circlips
- Dimension B
When to replace the piston?
To find out when the piston on your motorcycle, scooter or moped needs to be replaced, it's best to check your bike's manual. You can also keep an eye out for certain symptoms such as loss of compression, loss of power or oil consumption (only for a four-stroke piston).
Extending Piston life
To extend the life of the piston and reduce cylinder wear, it is recommended that you replace the piston rings on an alternating basis. This method maximizes piston life and improves engine performance.
It is important that you replace cylinder gaskets and piston circlips each time you disassemble the cylinder and piston. Failure to do so can result in oil leaks and engine damage.
Tuning Level: Original
We categorize our products into different performance levels Original, Sport, Racing and High End , so that our customers can choose the right parts for their setup. It is really important to combine parts that belong to the same tuning level, this is especially true for cylinders, crankshafts and exhausts.
Under Original you will find parts whose performance and technical specifications are identical to those of the stock part.