IOS FACTORY S-System II for Shimano

While inheriting the mechanical drag mechanism of the long-selling SHIMANO drag system IOS S-System, the drag characteristics remain radical like the S-System, activating slightly at the initial movement, releasing line when needed, and stopping when necessary.
The pronounced drag pitch further enhances drag retention.
The highly rigid and high-precision body with hard anodized anti-corrosion treatment offers excellent spool holding power and improved winding sensitivity thanks to spool resonance.
It provides superior anti-corrosion performance for saltwater use and delivers a sharp, mechanical drag sound that rivals will envy.
The setup has been simplified to a single-hole specification for easy installation.

Choosing Between the S-System and S-System II
S-System: Fine drag pitch, ideal for delicate fishing
S-System II: Suitable for all genres, recommended for those who prefer louder drag sounds

Specifications
Main Unit: Anti-corrosion black anodized
Accessories: Anti-corrosion stainless steel bearings, etc.

Compatible Reels
Compatible with SHIMANO 1000 - C3000 class reels from 2017 onwards