Compatibility: Designed to fit 16889, 16889A, 16890, 16890A, SG1601, SG1602 models .; Functionality: Enhances the steering performance and stability of 1/16 RC cars for better control.; Durability: Constructed from robust materials, ensuring performance under various driving conditions.; Ease of Installation: User-friendly design allows for straightforward installation without the need for special tools.; Versatility: Suitable for a variety of 1/16 RC car models, expanding your vehicle's potential.; : Engineered for accurate steering response, improving overall driving experience.; Value: Cost-effective option for upgrading your RC car's steering cup and rear hub carrier components.