UK customers - please note this silencer is not road legal in the UK and will be marked Not for Road Use Exhaust System Fits: Yamaha YZF-R 125 2021 - 2024 models. - Designed for riders who want to maximise the potential of the motorcycle. - Big Bore for maximum internal gas flow and tig welded for smoother internals. - Replaces the heavy OEM muffler/silencer. Silencer is fitted with a removable baffle, instructions are included. - Louder with improved gas flow. - No modifications required. (Re-mapping, Power commander) - Silencer mounting strap, clamp and gasket included. - Header/Downpipe Material: 304 Grade Stainless Steel. - Silencer Material: 304 Grade Black Painted Stainless Steel - Body Length excluding tips = 300mm - Silencer Code: 300BS - Fitting instructions included - See our Silencer Specifications Tab for length noise.