Raptor XL Belted Tires, w/ Viper Wheels, for Traxxas X-Maxx 8S (2pcs)Micro Fiber Tech (MFT) is a technology which combines a unique woven belt and a special adhesive formula that perfectly bonds within the carcass of the tires. Therefore, its quality is retained over the entire lifetime of the product. During driving, MFT belted technology effectively reduces and limits the rate of distortion and deformation of the tire, which provides a much more stable and a pleasant driving experience especially at the high speeds