Discover the ultimate upgrade for your mountain biking experience with our premium selection of Onyx Racing Products MTB Boost Disc Hubs. Designed for serious riders who demand precision, durability, and quiet performance, these rear hubs are available in versatile configurations including SRAM XD-R and Shimano Micro Spline compatibility. Engineered for 12mm thru-axles and 148mm boost spacing, they provide reliable engagement, lightweight construction, and cross-country or trail-focused performance. Crafted with high-quality materials and innovative sprag clutch technology, Onyx hubs deliver smooth, instant torque transfer without the disruptive noise of traditional pawls, ensuring a quieter ride in rugged terrain. The inclusion of 32-hole j-bend spoke interface and 6-bolt rotor mounting makes these hubs compatible with a wide range of wheelsets and braking systems. Perfect for trail, enduro, and bikepacking enthusiasts, these hubs combine advanced engineering, lightweight design, and a sleek black finish for a stylish, high-performance upgrade. Whether you’re tackling rocky climbs or fast descents, trust Onyxs innovative hubs to provide the control, durability, and silent operation you need to conquer every trail.