■Conforms to 2006 and 2007 exhaust gas regulations and 2010 noise regulations
Main Material | Stainless Steel |
Proximity Exhaust Noise | 89dB / 4250rpm (Japanese specification) |
Acceleration Riding Noise | 82dB (Japanese specification) |
Model | JBK-MD38 |
Engine model | MD38E |
Automobile emission test result certificate (Gas Repo) | Available
Certification Number | 1112001064 |
The CRF250L / M, which inherits the DNA of the CRF motocrosser series, is available with the RS-4J Cyclone.
The design of the silencer is based on US Yoshimura's motocross "RS-4" which is used in AMA Supercross Championship and newly developed to meet the Japanese standard.
In order to change the silencer to the up type for the racing image, we lowered the installation position of the left and right rear blinkers.(Rear blinker bracket is also included in the exhaust set.) Its styling is reminiscent of the CRF motocrosser and makes for a hot ride.
In addition, the manufacturer has paid thorough attention to the sound quality in order to create a fun experience.The exhaust sound is crisp and clear, and you can feel the light acceleration.
The cone end is made of carbon material, and the laser marking of "RS-4J" is applied to the front side of the silencer, and the emblem is attached to the back side.
[What is EXPORT SPEC]
This EXPORT SPEC is the result of a request from an overseas user who is very particular about the performance of the product, while keeping the original artisanal Tig (weld) burn color and machining marks.By using highly durable stainless steel as the material, YOSHIMURA has achieved a unique design and style with excellent cost performance.
Also, the diameter of the full exhaust pipe and tail pipe is the same as the stock exhaust.This allows customers who have the slip-on type exhaust system to upgrade to the full exhaust system by purchasing the Yoshimura exhaust system.
Full exhaust specification Required parts
・Cyclone EX pipe (S) 111-42B-5L00
・Exhaust flange (S) 117-036-1010