1.Fitment Replacement HD P/N 52300446. The passenger sissy bar fits 2018UP Softail models, including the Heritage FLHC FLHCS, Street Bob FXBB FXBBS, Slim FLSL, Deluxe FLDE and Standard FXST. Installation requires separate purchase of modelspecific Docking Hardware Kit 2.Easy to Install Featuring the innovative HoldFast Locking Latch system, this sissy bar for Softail Street Bob can be quickly and securely attached or removed without hassle. The detachable design also makes it easy to remove as your touring needs change 3.Carbon Steel Made from premium carbon steel for longlasting durability and stability. The backrest pad is made of PU leather and thick foam, providing both waterproof and comfort for those extended rides 4.Enhanced Comfort for Long Rides The extrathick foam padding on this backrest provides superb lumbar support, significantly reducing fatigue on extended journeys. Whether you're riding the Heritage or the Street Bob, your passenger will experience more comfort and less back strain, allowing your passenger to enjoy the ride more 5.Stylish and Functional The backrest cushions feature stitching for added sophistication, while the zippered cover allows for easy removal and cleaning, keeping your bike looking sharp and wellmaintained with minimal effort 6.Crafts The powdercoated surface not only enhances corrosion resistance but also maintains a polished appearance, protecting the flhc sissy bar from rust and contributing to the overall aesthetics of the motorcycle