/ 
The appearance of braid at the beginning of the 21st century transformed fishing practices. The use of braid also had a major influence on the development of fishing rods, including rings. While manufacturers have focused on the ceramics used, Fuji has also focused on optimizing the ring ramp with regard to the characteristics of braid.
The lightness of braid
When braid first appeared on the market, its characteristics led to many changes in fishing practices. Thanks to its finesse, casting distances exploded, but the material's lightness soon became a problem and the source of tangles during this phase, especially in windy conditions. So Fuji took the problem in hand!
The NGC, forerunner of the Kr Concept
The NGC (New Guide Concept) was developed by Fuji to optimize the use of nylon in terms of precision, casting distance, sensitivity, etc. With the NGC, braid worked very well, but tangles appeared!
Fuji then developed the KR Concept, which is specific to the use of braid and uses exactly the same principle as the NGC, namely:
- an in-depth, optimal study of the number, size, height, placement and shape of the rings
- the use of more and smaller rings on the tip
- use of a 3-ring reduction cone to limit wire swelling
The Kr concept in brief
To put it simply, whether for casting or spinning, the principle of the KR Concept is based on a reduction cone (at the reel outlet) on the first 3 rings, the purpose of which is to channel and guide your line quickly.
This cone is followed by a ramp of very small, light rings glued to the blank, which guide your line along a very large part of your blank, offering numerous advantages.
The benefits of the Kr concept
Reducing the weight of the ring ramp, channelling the line very quickly off the reel, gluing the rings to the blank and multiplying the points of contact provide real added value for the angler and his tool.
In fact, if these characteristics enable your braid to "marry" your blank, you'll gain in power, sensitivity and responsiveness, and therefore better shots. But, by channeling and guiding your line along its entire length, it also means more precise casting and optimized distances.
Finally, reducing the weight not only preserves the dynamic action of your blank, but also enhances the balance of the rod and reel assembly.
So if you're an avid braid user, I strongly recommend that when assembling a rod or purchasing one, you turn to KR Concept. To optimize and exploit all the characteristics of your tools and the materials they're made of.
