【YOSHIMURA】Slip-on Silencer RS-4J Cyclone EXPORT SPEC Japanese Government Certification Review

Legal Slip-on Silencer for the best performance

I put it on crf250rally50 and md44.
I have worn it on wr250x before, so I know its sound, performance, and great appearance, so I have no hesitation in choosing YOSHIMURA. 。
NORMAL intake, Normal exhaust pipe, and NORMALecu are the best for casual enjoyment! View detail

Stable YOSHIMURA

As mentioned in other reviews, the exhaust noise is on the large end of the scale for a Japan Government Certificated model. I think it could be a little quieter.
I did not feel much power up with the combination of exhaust pipe, Delta TorqueHead, and YOSHIMURA Silencer. It is only for appearance. View detail

YOSHIMURA RS-4J stainless steel exhaust tail section modification

After checking the online reviews of webike and some related videos on Bilibili, I finally decided to buy the YOSHIMURA RS-4J stainless steel exhaust tail section with the front section of SPTADO POWERBOX. Yoshimura’s tail section is very beautiful. It is a modified motorcycle I bought. The most exquisite in the product, it is like a work of art, I like it very much, while balancing the exhaust, it solves the problem of the mismatch between the intake and exhaust after the expansion of the previous cylinder, reduces the vibration when turning high, and the sound is quieter ( Compared with straight row), I am satisfied with the torque from low to high torsion, I like it! -------------------------------------------------- -------- I checked the online comments of Webike and some related videos in Bilibili. Finally, I decided to buy Yoshimura RS-4J stainless steel exhaust tail segments with Sptado Powerbox. The most exquisite thing in the product is like  art. I like it very much. While balanced the exhaust, it solves the problem of non-matching the exhaust and exhaust of the exhaust before the cylinder expanded. Compared with direct discharge), the torque is satisfied from low to high twist, I like it! Powered by Google Translator View detail

To a low, fat sound!

Compared with OEMExhaust System, Axel's Response is much better and accelerates comfortably.
I also changed my front sprocket from an OEM 14T to a Torque (acceleration?) 12T. I also changed the front sprocket from the OEM 14T to the Torque (acceleration?) 12T, so the top end extension used to be a frustrating factor, but it has improved tremendously, and I have no complaints at all, and am having a great time riding the bike.
As for the sound, I'm enjoying the low, fat, powerful sound of the Motocrosser.
I think it will make driving easier on both forest roads and paved roads as you can immediately tell the difference between the OEM Exhaust System and the OEM Exhaust System, so I would definitely recommend this product to anyone who is looking for more powerful acceleration and improved top extension.
It's a lot lighter than the OEMExhaust System, so pushing and pulling and causing the bodywork is a lot easier than it used to be!
I was able to install it without any problems by using the included Bracket and Bolt, but I had a hard time adjusting the angle and position.
Two of us worked on it, but it was still a little large. View detail

the present self (Large person) The volume is just right for

rally (MD44) It becomes the simultaneous installation with POWER BOX Exhaust Pipe.
The volume is mounted (Exchange) It is a good feeling. I think I don't have to worry about it except early morning.
The Fee Ring has a torque feeling at low speed, and it has become better. From the middle speed, the rotation became smooth. View detail