[Metal Magic Cover]
[Titanium Cover]
[Stainless steel cover]
The "RS-4J" is a cyclone that combines Yoshimura Japan technology with a silencer design for USYoshimura motocross that is active in AMA Supercloth.
The corn end is made of a luxurious carbon material. The front of the silencer has laser marking processing of "RS-4J" and the "Double Emblem" on the back side of the silencer has been given a standard specification.
The lineup has a slip-on design that makes it easy to change. Approximately 40% lighter than standard mufflers (STD:5.1KG,RS-4J Titanium Cover:3.1KG).
Performance characteristics eliminate valleys around 5,000 rpm generated by standard mufflers for smooth blowing. It produces a rich amount of torque in a particularly normal medium rotation range. Less depression after peak power and exceeds standard muffler performance throughout the entire range.
What is EXPORT SPEC?
The EXPORT SPEC reflects requests for overseas users, and the craftsmanship of Tigs (welding) has been given an emphasis on performance. By using heavy duty stainless steel material, Yoshimura unique design and style are achieved with an excellent price for money.
Off-road racing use is not covered under warranty.
Yoshimura Scarf
All JMCA compatible cyclones except racing cyclones are backed by a 2 year warranty. Within 2 years of purchase, in accordance with the instruction manual and other warnings, we will repairing any inconveniences to the product used successfully.
We will not accept any **service for the scarf that has been illegally modified.
Not compatible with European vehicles with O2 sensor