The WS-M04 freehub body from XLC is a high-quality accessory specifically designed for mountain bikes (MTB) with Shimano spline. This product is ideal for use on roller trainers and home trainers, making it a valuable addition to fitness equipment. The freehub body is made of durable aluminum, ensuring longevity and stability. The elegant color scheme in gray and black harmoniously blends with the design of most fitness devices. Made in France, the WS-M04 offers reliable performance and is designed to meet the demands of sports enthusiasts. The package includes the freehub body itself, which is easy to install and allows for seamless integration into existing systems. With this accessory, users can optimize their training experience and enhance the efficiency of their fitness equipment.