Upgrade your RC model vehicle with this OS cylinder and piston assembly for 25FX. Made by O.S. and compatible with OS brand, this engine part ensures top performance and durability. Designed for use in motor and engine parts and accessories, exhaust and fuel systems, and radio control and control line toys and hobbies, this assembly is the perfect addition to any RC enthusiast's collection. Get ready to take your vehicle to the next level with this high-quality cylinder and piston assembly.