Piston 19 steel teeth

The piston body is made of Polyamide PA6.6 with 30% carbon fiber and 5% Molybdenum. The plastic body is reinforced and modified to have a better life.

The steel teeth is made of 14260 (54SiCr6) spring steel. Before machining, the steel is annealed to remove internal stress, then the entire teeth rack is milled on a CNC machining center and tempered by hardening. The hardness of the teeth is 52 - 54HRC, which is ideal because the teeth are hard, but at the same time flexible and not brittle. The piston teeth has a second tooth omitted and the third tooth is cut in half to protect against the stucked BBs / choking of the gearbox.

Due to the Molybdenum additive used in plastic, the plastic body of the piston is not lubricated, but is used dry. Most plastics degrade after contamination with oil or grease, reducing strength.

We recommend applying grease only to the steel teeth.

Pistons can be used on the strongest springs.