Yoshimura
The Yoshimura SOUND INSERT KIT FLARED is a replacement flared low-volume insert kit designed for ALPHA and ALPHA T mufflers. It’s intended for riders who need to service their existing insert hardware or set up their muffler for different sound restrictions, depending on the application.
This kit is listed for a wide range of fitments across CFMOTO, Honda, Kawasaki, KTM, Suzuki, Triumph, and Yamaha models and model years shown in the fitment table below. Decibel reduction depends on the specific application, making it a practical option when a change in sound output is required for a particular setup.
Built specifically as a replacement insert kit for Yoshimura ALPHA and ALPHA T mufflers. The flared design and low-volume configuration make it a focused solution for maintaining or adjusting an existing exhaust setup where an insert is required.
Yoshimura notes this kit can be used as an optional insert on applications that require different sound restrictions. Because results vary by application, it’s a flexible way to configure the muffler for differing sound requirements while keeping the system’s insert components complete.
The kit includes the core components needed for the insert assembly: a low-volume insert tube, an end-cap collar, and a set screw. This makes it well-suited for replacing worn, missing, or damaged insert parts on compatible Yoshimura mufflers.
Sound
This Yoshimura flared low-volume insert kit is categorized under Replacement Service Parts and is intended for use with ALPHA and ALPHA T mufflers. It’s designed as a straightforward replacement-style solution, centered on the insert tube and the associated end-cap collar and set screw that secure the assembly in place.
Yoshimura specifies that decibel reduction depends on the application. That means the effect of the low-volume insert can vary based on the motorcycle and the specific exhaust configuration it’s being used with. For applications where different sound restrictions are required, Yoshimura describes this as an optional kit to help suit those needs.
Fitment
Fitment is provided for specific makes, models, and model years shown in the fitment table below, spanning CFMOTO, Honda, Kawasaki, KTM, Suzuki, Triumph, and Yamaha applications. An installation PDF is available on the page to help guide setup for the insert kit on supported configurations.
| Part Number | INS-27-K |
|---|---|
| Brand | Yoshimura |
| Product Line | Replacement Service Parts |
| Shipping Weight | 1 lb |
| Barcode | 00840025910423 |
| Make | Model | Model Years |
|---|---|---|
| CFMOTO | 675SS | 2025–2026 |
| Honda | CB750-Hornet | 2025–2026 |
| Honda | CBR1000RR | 2017–2026 |
| Kawasaki | Ninja-300 | 2013–2017 |
| Kawasaki | Ninja-400 | 2018–2023 |
| Kawasaki | Z400 | 2019–2023 |
| Kawasaki | Z900 | 2019–2024 |
| Kawasaki | ZX-4R | 2023–2026 |
| Kawasaki | ZX-4RR | 2023–2026 |
| KTM | 1290-SUPER-DUKE-R | 2014–2019 |
| KTM | 390-DUKE | 2017–2020 |
| KTM | RC390 | 2017–2020 |
| Suzuki | GSX-R600 | 2011–2026 |
| Suzuki | GSX-R750 | 2011–2026 |
| Suzuki | V-strom-650 | 2017–2025 |
| Triumph | Street-TRIPLE | 2018–2023 |
| Yamaha | MT-03 | 2020–2024 |
| Yamaha | YZF-R3 | 2015–2025 |
| Yamaha | YZF-R9 | 2025–2026 |
Fitment as listed by Yoshimura for part number INS-27-K.
Instructions / What's Included (PDF)
Provided by Yoshimura. Opens in a new tab.
