After an impressive run of over two decades, 2025 brings an all-new Suzuki DR-Z4S/SM.If a Race Series full system is not what you're looking for, we developed our RS-12 slip-on to pack performance on the DR-Z4S without compromising 50 state legality. The R
After an impressive run of over two decades, 2025 brings an all-new Suzuki DR-Z4S/SM.
If a Race Series full system is not what you’re looking for, we developed our RS-12 slip-on to pack performance on the DR-Z4S without compromising 50 state legality. The RS-12 Enduro Series slip-on provides great performance 4.1% in hp @8,000rpm and 2% increase of torque @4,800rpm with spark arrestor installed. This slip-on includes our installed USFS approved spark arrestor,SA-19-K, to make is easier to roll right out to your favorite off-road riding area. A custom stainless Yoshimura heat shield is included.
Yoshimura’s RS-12 is proudly designed, developed and manufactured in Chino, California.
Weights:
Stock slip-on: 13.6 lbs.
Yoshimura RS-12 slip-on: 9.2 lbs.
Sound levels:
(Using J2825 standards) with installed spark arrestor.
2000 rpm
Stock: 74.4 dB
RS-12: 86.0 dB
5000 rpm
Stock: 84.4 dB
RS-12: 89.3 dB
| Sound Level | Volume Insert | Spark Arrestor | Included |
| INS-32-K | No | ||
| SA-19-K | Yes | ||
| SA-20-K | No | ||
|
INS-34-K |
No |
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