Fitment: For Light X For Light S For X160 For X260 Middle Drive Feature: Integrated Design - The one-piece aluminum billet construction superior strength, making it capable of withstanding substantially greater instantaneous torque.Grease Fittings - Allows you to feed lubricant into the unit, enabling regular maintenance of the internal bearings.Light Aluminum - Made from aircraft-grade billet solid 6061-T6 aluminum, super lightweight and sturdy.Rustproof - Anodized for added corrosion and rust resistance.Adapts well to any bad weather conditions.CNC-machined - Machined by CNC technology to for a proper fit.Item Specifications: Material: 6061-T6 Aluminum Processing: CNC Machined Type: Middle Drive Package Included: 1x Middle Drive Secondary Pulley Features: Excellent Performance - Upgraded to 45# steel with a blackened treatment, making it more wear-resistant, corrosion-resistant, and stronger.Replaces the part without damage and is easy to install.Hollowed-out Design - Features a hollowed-out design that integrates with the body, reducing weight while maintaining strength.Stronger Screws - Includes stronger screws to prevent breakage during riding.CNC-machined - Machined by CNC technology to for a proper fit.Item Specifications: Material: 45# steel Processing: CNC Machined Type: Secondary Pulley Color: Black Package Included: 1x Secondary Pulley 6x Screws Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.