E5-approved slip-on exhaust silencer set made from precision-machined stainless steel. With black chrome-plated finish. Diameter 114 mm. With “revolver” end caps made from Ergal (aluminum 7075) for a style that matches your motorcycle. Complete with catalytic converter and removable dB killer. Note: Homologation applies only to standard engines of the models and model years specified in the product descriptions. Removal or modification of the standard dB killer will void the homologation.