*Product may vary by application
Emissions Compliance Declaration: QUALIFIED MANUFACTURER DECLARED "MODIFIED PART"
WARNING: Cancer and Reproductive harm - www.p65warnings.ca.gov
Description
After an impressive run of over two decades, 2025 brings an all-new Suzuki DR-Z4S/SM.
The new 398cc single cylinder water cooled engine is now fuel injected! We developed our RS-12 Race Series full system exhaust to enhance every aspect of the new DR-Z and the response was just what the doctor ordered. The RS-12 Race Series Full System packed substantial gains in performance adding 5.5% in hp @6,640rpm and 2.8% increase of torque @5,180rpm. These gains were made with our included/installed USFS spark arrestor SA-21-K! A custom stainless Yoshimura heat shield is included.
Yoshimura's RS-12 is proudly designed, developed and manufactured in Chino, California.
Weights:
Stock system: 17.8 lbs.
Yoshimura RS-12 full system: 10.6 lbs.
Sound levels:
(Using J2825 standards) with installed spark arrestor.
2000 rpm
Stock: 74.4dB
RS-12: 90.4 dB
5000 rpm
Stock: 84.4 dB
RS-12: 93.4 dB
Sound Insert/Spark Arrester Options
|
Sound Level
|
Volume Insert | Spark Arrestor | Included |
 |
INS-32-K | No | |
 |
SA-21-K | Yes |
|
|
|
SA-20-K | No |
|
 |
No |
. . . . .
This product was designed to fit on a standard equipped motorcycle, as delivered from the factory. OE and aftermarket accessories not found on a bike as delivered from the factory may not be compatible with this product.
Attention international customers: This product was designed and tested to be compatible with vehicles in the U.S. marketplace only. Compatibility, including fitment and performance, may vary by marketplace.
Instructions / What's Included PDF