UK customers - please note this silencer is not road legal in the UK and will be marked Not for Road Use Low Level Exhaust System Fits: Yamaha YZF-R 125 2014 - 2018 models. - Designed for riders who want to maximise the potential of their motorcycle. - Big Bore 304 grade stainless steel replacement exhaust system. This uses large diameter 34mm downpipe tubing in place of the more restrictive OEM Yamaha item. - 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/Down pipe Material: 304 Grade Stainless Steel. - Silencer Material: 304 Grade Polished Stainless Steel + 3K Weave Carbon Fibre Tip - Body Length excluding.