Barrel 4-S (JMCA) Silencer

It was attached to my car when I bought it. The sound is too light and vulgar. I took it off and sold it at Yahoo!
It's quiet, but it's easier and faster to ride in NORMAL without playing around with anything, both slow Torque and Throttle are smooth and fast!View Detail

Although FMF was liking in sound, it was unavoidable in the state where there is no selection branch, as an authorization Muffler, and made it Barrel 4.Although the explosive sound was disagreeable at the
beginning, when it gets used, it comes to think
, and, now, is in the satisfied state.Although I think that it seldom changes in
> sound, it becomes the sound which is putting in the Exhaust pipe of the BEET by appearance.View Detail

Since it equipped at the time of new car purchase, the comparison with normal cannot be performed.
Jarring loud sound could not be put up with, but it has exchanged for FMF Q4.
Although the design which is not conspicuous was to its liking ...View Detail

The exhaust was so shitty that I was disappointed, but I replaced it with a new one, Refreshing, and it felt great. For the first time, I wanted to keep running with this car.View Detail

This one for WR250X which my wife picked up from somewhere and came back, well, because lightness is good conspicuously, I installed it to my wife's course running exclusive use car for lightening, well, for the time being, about Sound, the state which put on the Baffle of JMCA Correspondence is high! I think that it is Exhaust System made from a cheap empty can, and I am impressed in a certain sense that I put such a thing on the market well. And next, I put on for RaceBaffle, but this time it is the empty can Exhaust SystemSound like the high-pitched fool which is quite noisy. The change was accomplished from the pekepeke sound to the nppapa sound, and it is further interest that the thing of such a shameful stupid Sound was made and sold well. Finally, without the Baffle, this is the sound of a normal 4-stroke Motocrosser. However, when you turn it a little bit, the lightest and smallest size Silencer is at fault and it also comes with a chattering sound. However, the largeness of the sound is a little larger than FMFQ4 with standard Spark arrester, so there is no problem at all for course driving.
Now, the next is the performance, but in combination with the OEM exhaust pipe, it is clear that it just became better, but it is not good at all. It is useless under 4000rpm. From 7000rpm to 9000rpm, the pickup is better than normal and the rpm rise is faster, but the speed doesn't follow.
After trying 2 types of Baffle and without Baffle, the overall balance is for RaceBaffle. Without the Baffle, the whole area is not good because of the lack of silencer capacity. It will not blow out.
So I added a DeltaTorque head pipe that a friend gave me and it changed the sound to a clear solid feeling.
The driving is certainly the rise of Idling, the rough Torque slightly up over the whole area, TanTanTan and the feeling of kicking is rather white. Moreover, the place where the weak silencer of the high rotation range was the area that seemed to be broken also turns with rather dodo dodo.

It is assumed to be used with Full Exhaust System.
But to be honest, the performance is not so good. The Tadao PowerPipe2 on the OEMSilencer is more powerful and smooth in the whole area. (The increase in rotation is slightly slower near the valley of the Torque) You can even use it to rev.
Finally, I tried the forbidden Delta, Tadashio.
As a result, the diameter of the Brown without Brown bitter is tight, but the arm strength that we have trained with 300 pull-ups and non-recoil push-ups that take 6 seconds once a day and the muscle strength of the lower half of the body that we have trained by running 300 miles a month were used to fit in the Liquid Gasket application. (I had to cut the bolt hole in the middle of the Barrel4 bracket forward as it seems to be about 3mm longer than the DeltaTorque head pipe).
No exhaust leaks of course.
The performance, yeah, the benefit of the Tadao PowerPipe is well demonstrated.
It turns and turns from the bottom to the top comfortably. However, if it is the combination with Tadao, the growth became better after 6000 rpm a little than OEMExhaust System with Racewith Baffle. However, it is a fact that the OEMSilencer is faster and more stable overall. There is no more Merit other than it is lighter.
What was the purpose of developing this? The Barrel4 has no value to us. Of course, when my wife came back from picking up the car, she had already installed it, but 3 seconds after she ran the engine, it had already disappeared from the garage and she was searching for the Yoshimura Exhaust System on Living.

However, we like the DeltaTorque head pipe very much. We will continue to study about WR250X. (Playing with various parts) doView Detail