Shimano's affordable SLX series has introduced a new bait finesse (BFS) model in 2025.
The SLX series was originally released overseas, and various models have been introduced domestically (Japanese market) as well, making it a popular high-cost-performance series with a proven track record.
This time, the SLX BFS has been upgraded after about 4 years, featuring an even cooler appearance.
In this article, we will introduce the features and appeal of the highly recommended high-cost-performance model, the 25 SLX BFS, perfect for those starting bait finesse or focusing on shore fishing.
25 SLX BFS Basic Specifications
The 25 SLX BFS is a bait finesse reel developed under the concept of "Freestyle BFS (Bait Finesse System) that freely manipulates lightweight lures." It is a popular model known for its high cost performance, suitable for a wide range of fields, from bass fishing to mountain streams and light saltwater games.
The lineup consists of only one model with a choice of right or left handle, showing a commitment to eliminating unnecessary costs.
The gear ratio is 8.2, and the retrieve length per handle turn is 82cm, making it an optimal setting for bait finesse where quick returns are essential.
A slightly disappointing point is that the weight is 170g, which is the same as the previous 21 SLX BFS model. Given the recent trend towards weight reduction, it would have been nice if the latest model was lighter than its predecessor.
However, it is more than sufficient for finesse use, and its specifications allow for winding fishing using light plugs, making it an optimal reel for shore fishing.
FTB (Finesse Tune Brake system)
To improve the pitching performance of lightweight lures used in bait finesse,
reducing spool weight is a major challenge.
Traditionally, spool weight was reduced by blanking out material—that is, drilling holes in the spool—but there was a limit to how much weight could be cut as long as the brake unit remained attached.
FTB solved this problem by removing the brake unit from the spool, making it possible to create a much lighter spool.
This led to an unprecedented brake system that applies magnetic braking directly to the spool.
With its unique mechanism combining centrifugal characteristics and magnetic braking, the system helps prevent backlash even with lightweight lures while also making long-distance casting more comfortable.
Extra Super Duralumin Spool
Equipped with a newly designed lightweight, low-inertia spool with a diameter of 32mm and a width of 22mm, it enables casting lightweight lures from the 3g range. In addition, the blanking of the spool has increased, reducing the weight of the spool itself even if the overall weight remains the same.
The rotational performance provided by this lightweight spool and FTB makes low-trajectory casting easier and improves the accuracy of approaches to pin spots.
Exciting Drag Sound
The SLX BFS is equipped with a drag sound mechanism that emits a click sound when the line is pulled out with drag system.
With spinning reels that use thin lines, you can visually grasp the drag situation by watching the spool rotate, but structurally, it is difficult to grasp the drag situation with baitcasting reels.
With the SLX BFS, the drag sound allows you to grasp the drag situation by sound, enabling you to engage in a fight with peace of mind.
Old and New Comparison: Shimano 21 SLX BFS vs. 25 SLX BFS
The 25 SLX BFS has definitely evolved from the previous model, and for the following reasons, it is well worth replacing even if you already own the 21 SLX BFS.
- Capable of casting lightweight lures from the 3g range, suitable not only for bass fishing but also for Ajing (horse mackerel fishing) , rockfish, and mountain stream trout.
- Easy to perform low-trajectory and pinpoint casts, and less susceptible to wind.
- High gear ratio allows for quick point targeting.
- Ideal for cost-performance-oriented users, beginners, and those who want to increase their tackle by purpose.
- The spool diameter and width are the same as the previous model, but it is lighter and ideal for lightweight lures of 3g or more.
| Comparison Model | Lightweight Lure Casting Performance | Spool Dia./Width | Weight | Cost Performance |
|---|---|---|---|---|
| 25 SLX BFS | Excellent (from 3g) | 32mm/22mm | 170g | Outstanding |
| 21 SLX BFS | Fair | 32mm/22mm | 170g | Good |
In addition to its functionality, the appearance has also become cooler in this version upgrade. Previously, the color scheme was based on blue, the theme color of SLX, but this time it has evolved into a gunmetal-based color, giving it a stylish and more luxurious look.
25 SLX BFS Bearing Addition Customization
For the SLX BFS, bearings can be added to the handle knobs and the worm shaft.
The method for adding bearings is the same as the previous model, so please refer to that when customizing.
Conclusion
The 25 SLX BFS has further evolved as Shimano’s proudly versatile bait finesse reel.
With its advanced Extra Super Duralumin spool, it delivers the performance needed to cast even lightweight lures in the 3g range accurately on a low trajectory, giving you a casting feel that approaches that of higher-end models.
In addition, it comes fully equipped with strong core features, including Shimano’s proprietary FTB (Finesse Tune Brake System), a highly rigid HAGANE Body, and a smooth carbon cross washer drag.
It is sure to perform across a wide range of fields, not only in bass fishing, but also in mountain streams, light saltwater applications, and rockfish fishing.
The price is reasonable and the cost performance is excellent, making it a recommended reel for a wide range of anglers, from beginners to veterans.
Its appearance has also been given a very cool finish with a darker color scheme.
Its actual on-the-water performance has clearly improved, making it an excellent choice for anglers who want to start bait finesse fishing or for those who want to own multiple reels.
If you want to enjoy freestyle fishing that lets you freely manipulate lightweight lures and take one reel anywhere, the evolved performance of the 25 SLX BFS is well worth experiencing.
