Exhaust Silencer Kit Fits: CRF 300 RALLY 2021-2023 - Ultra lightweight race specification. This kit weighs just 3.15kg. - This is a plug and play item, no modifications required. - Designed to maximise your CRF300. - TIG welded for smoother internals, reduced internal turbulence. - Designed to fit the OEM header or our own Black Widow header - Pipework material: 304 Grade Stainless Steel. - Silencer material: 304 Grade Black Painted Stainless Steel + 3K Weave Carbon Fibre. - Silencer length: 400mm - Silencer code: BC40V - Silencer fitted with a removable baffle - Two year Black Widow warranty.