The new version of the Dopper S3R, now available with road homologation. Excellent quality – but what else do you expect from a Doppler exhaust. Clear-finished expansion chamber, beautiful polished aluminium silencer and reinforcements at the tailpipe. Works fine with 50cc and 70cc sport cylinders, which is quite unusual since this exhaust is produced in France, where 70cc cylinders are not allowed to be sold. Depending on the model, one or two sets of vario weights are included.