This piston ring set is a genuine NOS (new old stock) product made by Suzuki for their DS100, RV90, and TS100 models. It is the perfect replacement part for your motorcycle that ensures smooth and efficient engine performance. The set includes all the necessary rings required for these models and is made with high-quality materials to ensure durability and longevity. With this piston ring set, you can restore your motorcycle to its original condition and enjoy a hassle-free ride. It is compatible with various other Suzuki models as well, so make sure to check with your mechanic before purchasing. Invest in this genuine NOS Suzuki piston ring set and experience a smoother and more powerful ride every time.