Yoshimura · RS-12
The Yoshimura RS-12 Premium ADV Muffler Repack Kit is a replacement service parts package designed to refresh RS-12 muffler packing at the intervals Yoshimura recommends for off-road use. According to Yoshimura, repacking after 6-8 hours of use, or after each Race, helps the exhaust perform as it was designed by preventing dirty packing from restricting airflow, which can lead to lost power and degraded sound.
This kit is listed for CFMOTO IBEX-450 2025 and IBEX-450-MT 2025–2026, Harley-Davidson Pan-America 2021–2022, Honda Africa-Twin 2020–2026 and Transalp 2024–2026, Triumph TF450 models 2025–2026, Yamaha Tenere-700 2021–2026, and Yamaha YZ450F 2026–2027 (see the fitment table below).
Performance
This kit includes premium packing material intended to replace worn or dirty muffler packing. Yoshimura notes that dirty packing can restrict airflow from the motor, which may contribute to a loss of power and a deterioration in exhaust sound. Repacking helps restore freer airflow and brings sound back in line with the exhaust’s intended performance.
Included
To support a complete service, the kit comes with rivets and a rivet band. These parts are provided so the muffler can be reassembled after the packing is replaced, helping keep the service straightforward and consistent with the RS-12 muffler’s repack procedure.
Installation
The package includes repacking instructions to guide the service process, along with decals for the muffler sleeve and end-cap. It’s a convenient way to handle both the functional maintenance task and the finishing details during a repack.
Sound
Yoshimura emphasizes that off-road systems require regular repacking, recommending service after 6-8 hours of use, or after each Race. Over time, packing can become dirty and restrict airflow from the motor, which Yoshimura says can cause a loss of power and degrade sound quality. Repacking at the suggested intervals helps the exhaust continue to operate the way it was designed, restoring freer airflow and improving exhaust sound.
Included
This RS-12 series repack kit is built around the core service items needed for a muffler repack. It includes premium packing material, plus the rivets and rivet band used during reassembly. Yoshimura also includes decals for the muffler sleeve and end-cap, along with repacking instructions to support the maintenance process from disassembly through final assembly.
Fitment
Fitment is specified for a range of adventure and off-road models, including CFMOTO IBEX-450 2025 and IBEX-450-MT 2025–2026, Harley-Davidson Pan-America 2021–2022, Honda Africa-Twin 2020–2026 and Transalp 2024–2026, Triumph TF450 models 2025–2026, Yamaha Tenere-700 2021–2026, and Yamaha YZ450F 2026–2027. For added help during service, an installation PDF is provided on the page.
| Part Number | REPACK-RS12-ADV |
|---|---|
| Brand | Yoshimura |
| Product Line | Replacement Service Parts |
| Series | RS-12 |
| Shipping Weight | 1 lb |
| Barcode | 00840025913127 |
| Make | Model | Model Years |
|---|---|---|
| CFMOTO | IBEX-450 | 2025 |
| CFMOTO | IBEX-450-MT | 2025–2026 |
| Harley-Davidson | Pan-America | 2021–2022 |
| Honda | Africa-Twin | 2020–2026 |
| Honda | Transalp | 2024–2026 |
| Triumph | TF450 | 2025–2026 |
| Triumph | TF450-C | 2025–2026 |
| Triumph | TF450-E | 2025–2026 |
| Triumph | TF450-X | 2025–2026 |
| Yamaha | Tenere-700 | 2021–2026 |
| Yamaha | YZ450F | 2026–2027 |
Fitment as listed by Yoshimura for part number REPACK-RS12-ADV.
Instructions / What's Included (PDF)
Provided by Yoshimura. Opens in a new tab.
