Built for riders who demand premium performance refined aesthetics and long-term durability Wolf Tooth Mountain Rear Hubs are precision-machined in Minnesota from aerospace-grade 7075-T6 aluminum. Designed to be the foundation of a high-performance wheelset these hubs deliver exceptional power transfer smooth rolling efficiency and easy serviceability. Featuring the ENVE Innerdrive system and a robust lightweight construction they are engineered for riders seeking reliable performance across trail enduro and all-mountain riding.Precision CNC-machined from aerospace-grade 7075-T6 aluminum for an optimal balance of strength stiffness and weight60t ENVE Innerdrive system provides immediate engagement for efficient power transfer - customizable with optional ratchet rings (Sold Separately)Engineered for low rolling resistance and long-lasting durabilityOptimized bearing system promotes smooth performance and extended service lifeFully serviceable design with replacement parts available for long-term maintenance and repairPrecision-machined and assembled in Minnesota USAAvailable in a range of anodized color options to complement custom bike buildsDesigned for high-performance mountain bike wheel buildsBacked by Wolf Tooth&';s commitment to quality support and rider-focused engineering TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Rear Axle 12mm Thru x 148mm Tooth Count 60 Cassette Body Type SRAM XD Color Gold Skewer Included No Bearing Type Sealed Cartridge Weight 246 Defined Color Gold Spoke Interface J-Bend Hub Drilling 32 Hub/Brake Compatibility 6-Bolt Disc