“MICROMODULE” is a precision-engineered gear system that uses ultra-fine teeth and a refined housing structure to deliver exceptionally smooth, ‘silky’ reeling. By increasing the number of gear teeth in contact, it enhances fluidity without compromising strength or durability.
A drive system featuring tightly meshed micro-precision gears for seamless performance
The 'module' refers to the unit that defines the size of a gear's teeth. A smaller module reduces gear vibration and noise, resulting in smoother rotation. However, achieving a smaller module demands extremely high precision in both component manufacturing and assembly
Shimano’s MICROMODULE technology achieves ultra-small modules in the pinion and drive gears—the core components of the reel—without compromising strength or durability. This innovation allows for nearly twice the number of gear teeth compared to conventional Shimano systems, resulting in an exceptionally smooth and refined reeling experience. It’s a breakthrough made possible by Shimano’s decades of expertise in precision gear engineering.
Delivering both silky-smooth reeling and uncompromising strength.
Gear noise levels while reeling – visual comparison
MICROMODULE achieves exceptionally smooth gear meshing through the combined effect of ultra-small precision gears and an advanced body housing design. This synergy significantly reduces noise and reeling roughness compared to conventional Shimano systems. Additionally, the increased number of meshing teeth shifts vibration frequency beyond the threshold of human tactile perception, resulting in a remarkably fluid reeling experience.
This gives it a “silky” reeling that you have never experienced before.
Shimano’s unique gear system delivers an exceptionally smooth reeling experience without compromising strength. By increasing the number of tightly meshing gear teeth, the load is more evenly distributed, ensuring both durability and refined performance.

Our goal, effortless reeling.
Shimano's reel design concept aims for “eternally smooth reeling.” The result is HAGANE. Shimano honed its proprietary metal processing technologies with precision cold-forging technology and refined them over many years to develop reels that only Shimano could deliver.
The reverse tapered spool corrects the winding shape and reduces spool vibration.
"MGL SPOOL Ⅳ" has achieved an optimal spool shape with a unique reverse taper design, enhancing both functionality and efficiency.
The spool, expertly designed for balanced line winding, minimizes shaking during rotation and significantly dampens vibrations while casting. This innovation delivers an exhilarating casting experience, making it feel as though the line is effortlessly unfurling into the distance.
Versatile brake system: Adjust on-the-fly with an external dial for any situation.
The SVS centrifugal brake system offers precise casting capability thanks to its exceptional casting accuracy. This design allows anglers to hit their intended targets effortlessly, enjoying the benefits of lightweight reels that enhance performance with exciting line leaps and long-distance casts.
Introducing the lightweight revolution: The new concept magnet brake system.
The Finesse Tune Brake (FTB) system, which is adopted in Shimano’s bait reels, is a magnetic brake system that eliminates the brake unit from the spool, making it the lightest spool in Shimano’s bait finesse history.