While I'm sure the factory chain guard is fully functional, it's lacking in appearance and inconsistent with the look and feel of the bike. If the $400+ BMW carbon fiber upgrade was the only remedy, I'd live with the stock part. But fortunately Bestem offers an excellent carbon fiber replacement that looks every bit as good as the OEM part for a very reasonable price. Delivery was fast, packing was excellent and the part fit perfectly. All my future CF purchases will come from Bestem.
Reviewed by: (Verified Buyer) Mike McNelly from Southern California.