Big Bore Exhaust Downpipes Linkpipe Fits: Benelli TNT Tornado Naked 125 135 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 models - Lightweight System, weighs 1.09 KG / 2.4 lbs. - OEM Compatible, mounts in the same position as the standard header. - Accepts slip on style silencer with an internal diameter of 51.5mm. - OEM Lambda sensor (O2 sensor) compatible. Accepts your standard sensor. - This is a plug and play item. - TIG welded for smoother internals. - 304 grade stainless steel. - Fitting instructions included - 2 Year Unlimited Black Widow Warranty.