Industry Nine Freehub bodies are machined in North Carolina and contain all necessary pawls, springs and bearings for servicing or converting their hubs. Kits include freehub, bearings, inner spacer, pawls, and springs. Convert or replace your existing Hydra mountain freehub body with this complete MicroSpline kit. Includes everything you need to swap the freehub and get riding. Item Specifications: Cassette Body Type, MicroSpline. Expert customer service by bike experts! A Real Brick And Mortar Retail Bicycle Shop with people you can talk to! (9-5 Mon-Fri, 12-4 Sat & Sun EST). Video will open in a new window. Industry Nine Hydra Micro Spline Freehub Body – Replacement & Conversion Kit. Upgrade your cycling experience with the Industry Nine Hydra Complete Freehub Body – Microspline, the ultimate solution for replacing or converting your rear hub to enhance performance and compatibility. Crafted for enthusiasts who demand precision, durability, and seamless integration, this complete freehub kit is engineered to elevate your mountain biking adventures. Built with high-grade aluminum components and protected by Industry Nine’s renowned sealing technology, the Hydra Micro Spline freehub body ensures long-lasting durability and resistance against dirt, water, and grit. The kit includes meticulously machined bearings, pawls, springs, and a sealed freehub body, all designed for optimal performance in demanding trail conditions. The inclusion of MS Drive-Side Endcap and freehub body seal ensures secure operation and quick maintenance. Whether replacing a worn-out freehub or converting to Micro Spline, this kit delivers crisp, immediate engagement that riders trust on rugged trails and technical descents. This complete kit features everything needed for a hassle-free swap, including the freehub body, bearings, inner spacer, pawls, and springs. The Micro Spline cassette body offers a secure fit for 11 and 12-speed cassettes, enabling precise gear shifts and optimal drivetrain performance. Compatible with 12mm thru-axle (TA) systems, it provides a robust interface that enhances wheel stability and stiffness. Style & Use Case. Ideal for aggressive mountain bikers, Enduro racers, and trail riders looking for a reliable upgrade, the Industry Nine Hydra Complete Freehub Body supports high-impact riding with confidence. Its sleek design and advanced engineering make it suitable for a wide range of mountain biking disciplines, ensuring your bike stays responsive and efficient in challenging terrain. Innovative & Differentiating Features. Industry Nine’s proprietary engineering ensures superior engagement and durability. The kit’s compatibility with multiple cassette types and its comprehensive installation parts make it a versatile upgrade for Hydra hubs. When converting from Micro Spline to XD/HG, note that an XD/HG-specific driveside end cap (XN6271) is required for proper fitment, highlighting its tailored design for maximum compatibility. Optimize your mountain biking setup with the Industry Nine Hydra Complete Freehub Body – Microspline, and experience the perfect combination of precision engineering, durability, and trail-ready performance. Enhanced durability and reliable performance with the Industry Nine Hydra Complete Freehub Body designed for Micro Spline cassette compatibility. Constructed from high-quality materials to ensure long-lasting wear resistance and optimal engagement in demanding mountain biking conditions. Features advanced engineering with included bearings, pawls, springs, and seals, allowing for seamless conversion or replacement of your Hydra rear hub for improved efficiency. Innovative compatibility options include conversion between Micro Spline and XD/HG freehubs (requires specific end cap), enabling custom drivetrain configurations for versatile riding styles and performance upgrades. Micro Spline Complete Freehub. Hydra Disc 12mm TA. Professional Customer Service- available 7 days a week Check out our 200,000+ amazing reviews! 365 Cycles delivers all your cycling needs fast! We don’t waste time preparing your order. Our priority is to serve our customers first and foremost. If you need help picking the right product, have questions about bike component compatibility, or just want to geek out about bikes we are here 7 days a week! Simply put, we are bike experts from dirt to tarmac and want to make sure you get the full 365 Cycles experience when you shop with us. At 365 Cycles our mission is to simplify the shopping experience. We’re dedicated to building lasting relationships with our customers, communities, and team members. We combine the knowledge and service of a traditional bicycle shop with the convenience of shopping in your own home. Compare First Class vs Priority as sometimes Priority can be cheaper and it gets to you faster! 365 Cycles 1180 Enterprise Rd East Petersburg, PA 17520 United States. Sign up for news, special offers & other good stuff!