Experience Superior Performance with Shimano Acera Disc Brake Rear Freehub FH-MT400 Shimano - Rear Freehub - Center Lock - Disc Brake - 12-x142 mm E-THRU Axle - 8/9/10-speed - 11-speed MTB Upgrade your cycling experience with the Shimano Acera Disc Brake Rear Freehub FH-MT400. Designed for 8-11 speed drivetrains and equipped with Center Lock disc rotor mounting, this rear freehub ensures stiffer wheel rigidity, smooth rotation, and reduced drag, making it a must-have for serious mountain biking enthusiasts. Stiffer Wheel Rigidity for Enhanced Performance: The FH-MT400 freehub offers stiffer wheel rigidity, providing you with a responsive and precise riding experience. Whether you're tackling technical trails or speeding along flat terrain, the enhanced rigidity ensures optimal power transfer and control. Smooth Rotation for Effortless Riding: Enjoy smooth and effortless rotation with the FH-MT400 rear freehub. Its precision engineering ensures a seamless spin, minimizing resistance and maximizing your cycling efficiency. Feel the difference as you glide through every pedal stroke. Center Lock Disc Rotor Mounting for Convenience: With Center Lock disc rotor mounting, the FH-MT400 freehub simplifies the installation of your disc brake rotors. This user-friendly design allows for quick and secure rotor attachment, reducing setup time and ensuring consistent braking performance. Compatibility for Various Drivetrains: The FH-MT400 freehub is compatible with 8, 9, 10, and 11-speed MTB drivetrains, offering versatility for different gear setups. Its wide compatibility makes it a valuable addition to your mountain biking arsenal. Durable and Reliable Construction: Crafted by Shimano, renowned for its commitment to quality and durability, the FH-MT400 freehub is built to withstand the demands of off-road riding. Ride with confidence, knowing your rear freehub can handle the challenges of rugged terrains and adverse weather conditions. Features Features of Shimano Acera Disc Brake Rear Freehub FH-MT400 8-11 Speed Stiffer Wheel Rigidity: The stiffer design ensures improved power transfer, responsiveness, and control, allowing you to conquer challenging terrains with confidence. 142 x 12 mm Rear E-Thru: This axle provides a secure and precise connection between your frame and rear wheel. This axle standard enhances stability and performance, especially during aggressive off-road riding. Quick and Easy Assembly: Its user-friendly design allows for straightforward installation, saving you time and effort while ensuring a reliable setup. Center Lock: This hassle-free system ensures a secure fit, providing consistent and efficient braking performance. Specifications Specifications of Shimano Acera Disc Brake Rear Freehub FH-MT400 8-11 Speed Model No FH-MT400 Series Shimano Acera M3000 Series Color Black Color|1 Hub Shell Black Brake Type Center Lock Disc Brake Rear Speeds 11/10/9/8 O.L.D. (mm) 142 Spoke Hole 32 H External Serration Disc Brake Rotor Lock Ring|Without Yes Internal Serration Disc Brake Rotor Lock Ring|Without Yes Axle Fixing Method 12 mm E-THRU Thru Axle (Length x Inner Diameter ; mm)|142 x 12 Yes Flange Distance (mm) 57.4 Offset (mm) 6.65 P.C.D. Left / Right (mm) 44/45 Flange Diameter Left/Right (mm) 52.8/53.8 HG Spline (Others) Yes Engagement Type Pawl Ratchet Quick Engagement X (more than 36 times/360 deg.) Seal|Hub Labyrinth+Contact Seal|Freehub Body Contact Internal Grease Sleeve Yes Technology Technology of Shimano Acera Disc Brake Rear Freehub FH-MT400 8-11 Speed Center Lock: The Center Lock system makes an easy rotor installation possible with spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency.