DR-Z4 S/SM 25-26 Race RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Category: Race Series Exhaust System
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 |
||
|
INS-34-K |
No |
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