The Yoshimura RS-12 Enduro Series Slip-On is a proven performance upgrade for the all-new 2025 Suzuki DR-Z4S. Designed and manufactured in Chino, California, this slip-on delivers measurable gains without sacrificing trail legality. With a 4.1% increase in horsepower at 8,000 RPM and a 2% torque boost at 4,800 RPM, it’s a solid step up from stock.
The RS-12 weighs in at just 9.2 lbs, cutting more than 4 lbs from the factory system. It includes a USFS-approved spark arrestor (SA-19-K) and a stainless Yoshimura heat shield, making it ready for off-road use straight out of the box.
This slip-on meets the requirements for 50-state off-road use while giving the DR-Z4S a deeper, more aggressive tone:
2000 RPM: Stock – 74.4 dB / RS-12 – 86.0 dB
5000 RPM: Stock – 84.4 dB / RS-12 – 89.3 dB
If you’re not looking for a full race system but want a reliable performance bump with reduced weight and a more responsive feel, the RS-12 is the right call for your DR-Z4S.
Yoshimura part number: 116612S520
If you have any questions or need help finding what you need for your motorcycle or adventure please reach out: EMAIL US OR CALL 208-254-2044
