Lambda sensor and Remus exhaust?

I have a new Remus exhaust for my LXV 125 3V ie but my lambda sensor does not fit into the new hole dedicated on the Remus header.  Is there an adaptor I have to buy separately?  

Hello Ray!


I just saw in your order history that the Remus exhaust you ordered is only for "older" i.e. models and not for the 3V engine. The connection thread for lambda sensor is different within i.e. and 3V i.e. models.