Rider weight plunger  3009/3010/3012 

SME rider weight plunger assembly for SME 3009/3010/3012 S2 improved 

Machined from delrin, the plunger is shaped to ensure the perfect centering of the spring.

The spring is made of harmonic steel, an essential part of the side weight of all SME 3009 / 3010 / 3012 S2 models in both improved and unimproved versions.

This assembly stops the rider weight from erratically sliding back and forth by pushing it firmly onto the rod. This enables precise weight setting.

1 plugger + 1 spring