The Suntech FMX Keiryu extra stiff rods really are extra stiff. The 4.5 meter rod measures a whopping 67 pennies. It's a trout rod, but 67 pennies is carp rod territory! I have not yet hooked a fish that would even come close to testing the rod's limits. A smaller fish will put a bend in the rod, just not a very big bend. When you hook a fish in the mid teens, you'll get a nice bend and a nice fight, but you know the rod can handle so much more.
Although it is a seriously stiff rod, the Suntech FMX Keiryu extra stiff 45 will cast a size 4 fluorocarbon line surprisingly well (better than the Suntech Genryu Sawanobori 45). The overall rod is surprisingly stiff but the upper third of the rod is just soft enough (and has just enough inertia) that it actually casts pretty well. I think the 5.3m rod casts better than the 4.5m, largely do to its greater inertia, which greatly helps load the rod.
Even the 4.5m rod is a two-hander, though, and not because of the weight. The rod is stiff enough and has enough inertia that if you try to cast it one handed you just can't get the a wrist flick and hard stop at the end of the forward cast. I find it much easier to cast as a two-handed rod.
Don't discount two-handed casting! I have come to like it quite a lot - certainly for any rod over 4.5m and even for most of the 4.5m rods that people complain are tip heavy. With a little practice you can be just as accurate and have just as tight loops. Besides, if you hook a nice fish you'll need two hands anyway!
With 4X tippet capability and with a measurement of 67 pennies (for the shortest, least capable one), I think they'll do very well with large fish. Although I haven't yet caught any carp with the rod, I received a photo from Les C who has. He says the rod has easily handled a dozen carp ranging from 3 to 5 lbs.
In addition to being what an excellent big fish rod, whether for trout, bass, catfish, carp, stripers, steelhead, etc., I think the FMX Keiryu extra stiff will also prove to be a nice Czech nymphing rod. It is an extremely sensitive rod. A soft rod absorbs much of the pull or tap or vibration because it bends so easily. Stiffer rods transmit the slightest tap without absorbing it.
Of course, that stiffness has a downside. Just as you will feel the fish immediately, the fish will feel the tension on the line immediately. Even though the fish is going to know very quickly that the fly is fake, I now believe they react even more quickly to the tension on the line. If you maintain a tight line and pull your weighted nymph downstream (even if just exactly the same speed as the current) the fish may not be able to spit out the fly before the tightening line causes the hook point to catch.
After watching several slow motion videos of fish taking flies, and either spitting them out or getting hooked, I do believe that a lot of the fish that take our flies try to spit out the hook before we even know they took the fly. The ones we catch are the ones for which the hook point caught on the way out.
Although for years I have suggested fishing with the lightest line you can get away with, a heavy line is a better match for a stiff rod in more ways than one. The most obvious is that it loads the rod better and is easier to cast. Less obvious, perhaps, is that the greater line sag you will get with a heavy line is an excellent strike indicator. When a fish takes the fly, you will see the line tighten before you feel anything - and before the fish feels tension on the line. You still need to react quickly, but the greater line sag does give you a little extra time.
With the heavier line, do use a longer tippet, though. You still want to keep the hi-vis line off the water's surface all the time. Stop your forward cast high enough that the colored line never even touches the surface.
Being able to react more quickly to a strike is another advantage of fishing with both hands. With your upper hand acting mostly as a pivot point, you only have to move your lower hand a little (pushing forward) to move the rod tip a lot. If you move both hands, pushing your lower hand forward and at the same time pulling your upper hand back, you only have to move each hand a few inches to set the hook.
I really think the new Suntech FMX Keiryu extra stiff will prove to be a nice big fish rod and also a nice Czech nymphing rod.
The grip is a widened out section of the blank, to which a smooth but very effective nonskid finish as been applied.
The grip section, above the actual nonskid grip area, has a deep maroon finish with sparkles. The sparkles are not very obvious unless in direct sunlight. The sections above the grip are painted black with just a pair of silver rings around the tip of each section.
The Sunteck FMX Keiryu extra stiff comes with a Fuji rod cap, the KTC-20 for the 4.5m rod and the KTC-25 for the 5.3m rod. The KTC rod caps are designed to be line holders as well. You can wrap your keiryu line around the KTC rod cap and slide it between the end of the plastic barrel and the rubber tip to hold it. I would not do that with a fluorocarbon tenkara line, though, as you will get very tight coils in the line that will be more difficult to stretch out.
The grip screw cap is plastic. It is knurled for easy tightening and loosening. I comes with a rubber O ring to keep it snug and has a hole for ventilation. I would suggest disassembling the rod between uses to allow all the sections to dry thoroughly. The lillian/swivel assembly easily fits through the second section.