Perfect fit for all Harley Davidson Softail models with triangular swingarm. Such as Fatboy Heritage, Fat Bob, Street Bob, Low Rider or Sport Glide. The bag can also fit various other models and brands such as Yamaha Wildstar, Dragstar, VN models. Basically, it should fit any triangular swingarm similar to the HD Softail swingarm. The installation is relatively easy.No additional support is required. It is recommended to protect the swingarm from scratches with a protective film or adhesive strips. The names Harley-Davidson®, Harley®, Buell®, various model names and model descriptions are mentioned for reference purposes only.