ZYLINDERERSATZTEIL MX

We recommend A-pistons for new cylinders or with a new Nicasil coating.
We recommend B-pistons for all cylinders that have already been used.
B-piston is marginally larger than an A-piston to avoid any compensate for wear.
C-piston is marginally larger than a B-piston etc.

If you assembling the piston:

Always replace old seals with new ones !
Mount the piston with the arrow pointing towards the outlet.
Carefully place the sealing rings of the piston pin with the sealing opening facing down.
Mount the piston rings on the piston. Note that some pistons have keystone piston rings. These are conical and can quickly be placed incorrectly.
Check that the piston rings are correctly positioned in the groove and close completely. Lubricate all parts with engine oil.

Introducing Athena piston line range for 4-Stroke Off-Road motorcycles. Athena pistons are produced with a special high-performance aluminum alloy, with a backward-extrusion forging process. Developed and engineered in Italy by Athena R&D Department, the Athena Pistons need to pass several bench tests and track sessions to achieve the highest level of performance and reliability. Technical solutions and quality standards are the same or better than those used in the OE productions. A screen-printed Molybdenum Bisulphide special sintered coating is applied on the piston skirt. This allows to increase smoothness, performance and durability, reducing friction and noise. The piston rings, included in the kit, are state-of-the-art, made in Japan components, produced in special steel with PVD coating or chrome nitrides. They are developed to perfectly be adaptable to the cylinder walls even at low tangential load. The proven quality of Athena pistons is offered at an extremely affordable price.

• Montagetipps_Kolbenringe.pdf Montagetips für Kolbenringe (EN)