Yoshimura · AT2 · Full System
Designed for Suzuki GSX-8R 2024–2026, Suzuki GSX-8S 2023–2026, and Suzuki GSX-8T-TT 2026 (see the fitment table below), it’s developed to bring out a sharper voice and stronger track-focused character from the 800 twin platform.
This AT2 full system is part of Yoshimura’s Race Series line and is offered with an optional Low Volume Insert INS-20-K. The listing also notes an available Aluminum Muffler bracket kit 200BG117200*, with the note that the muffler bracket kit is not compatible with GSX8T/TT.
Performance
Built as a Yoshimura Race Series Exhaust System, the AT2 full system is engineered specifically for the Suzuki 800 twin platform. The manufacturer developed it to highlight both sound character and performance for GSX-8R and GSX-8S models when the goal is track use.
Materials
This system is specified as a Stainless full system, providing a complete exhaust configuration under Yoshimura’s AT2 series.
Sound
For riders needing a quieter setup, the listing notes an optional Low Volume Insert INS-20-K for this full system. Sound and weight details for the open configuration and the insert configuration are provided in the on-page table for quick comparison.
Development
Yoshimura describes the AT2 Race Series full system as a purpose-developed answer for the Suzuki 800 twin platform, created for racers taking the GSX-8R and GSX-8S to the track. The manufacturer notes development focused on bringing out the best in sound and performance on the new 776cc, 270 degree engine, positioning the AT2 as a track-minded upgrade built around that engine’s character.
Sound
Sound output varies by configuration, and the page includes a sound-level table showing SAE J2825 readings at 2000 rpm and 5000 rpm for the AT2 full system in open form and with the optional insert. Weight figures for each configuration are also shown there, making it easy to review the published numbers alongside the stock comparison listed in the same table.
Installation
Fitment is specified for Suzuki GSX-8R 2024–2026, Suzuki GSX-8S 2023–2026, and Suzuki GSX-8T-TT 2026; confirm details in the fitment table below. The product page also includes multiple photos, a product video, and an installation PDF to support planning and installation. The listing additionally references an Aluminum Muffler bracket kit 200BG117200*, with the note that the muffler bracket kit is not compatible with GSX8T/TT.
| Part Number | 11720AP520 |
|---|---|
| Brand | Yoshimura |
| Product Line | Race Series Exhaust System |
| Series | AT2 |
| System Type | Full System |
| Material | Stainless |
| Shipping Weight | 16 lb |
| Barcode | 00840025915343 |
| Emissions Compliance | QUALIFIED MANUFACTURER DECLARED "MODIFIED PART" |
| System Configuration | Sound Levels (SAE J2825) | Weight | |
| 2000 rpm | 5000 rpm | ||
| Speed Series AT2 Full System Open | 97.5 dB | 103.8 dB | 10.2 lbs |
| Speed Series AT2 Full System w/Insert | 90.3 d | 101.3 dB | 10.1 lbs |
| Stock | 78.5 dB | 89.1 dB | 17.3 lbs |
| Make | Model | Model Years |
|---|---|---|
| Suzuki | GSX-8R | 2024–2026 |
| Suzuki | GSX-8S | 2023–2026 |
| Suzuki | GSX-8T-TT | 2026 |
Fitment as listed by Yoshimura for part number 11720AP520.
Instructions / What's Included (PDF)
Provided by Yoshimura. Opens in a new tab.
