UK customers - please note this silencer is not road legal in the UK and will be marked Not for Road Use Low Level Full 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 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/Downpipe Material: 304 Grade Stainless Steel. - Silencer Material: 3K Weave Carbon Fibre + 304 Grade Blue Stainless Steel Tip.