The Sport shock is no longer made by the OEM Sachs. I believe they were the ‘Advanced’ range versus regular ‘Touring’. BMW obviously take standard parts and rebadge them.
If you buy a Sport shock from BMW you will get a non-Sport/standard Sachs shock (ie Touring) with the Sport part number. So my advice is don’t do it unless you want to pay a load of extra money for no reason.
@Lee was told this by a dealer 2-3 years ago. And I subsequently found the Sachs own Advanced fitment stopped (bizarrely difficult to verify) and correlated the 2 things.
Furthermore if you wanted to replace the springs you can only do so with BMW springs as no one else does -15mm.
Conclusion for me. I use Monroe Reflex shocks. Bilstein B4 also popular. And get the springs blasted and coated. No loss not having Sport shock.