Carbon-Ti X-Hub SP Boost Rear Disc Hub
| Article number: | 008-05-02 |
| Availability: | In stock |
The Carbon-Ti X-Hub SP Boost Rear Disc Hub combines low weight, rapid engagement, and precise bearing adjustment for premium cross-country and marathon wheel builds. Its oversized hub shell and 17mm axle are CNC-machined from AL7075-T6 aluminum, delivering an excellent balance of stiffness, strength, and low rotating mass.
A four-pawl freehub mechanism engages a 56-tooth Grade 5 titanium drive ring for quick, consistent power transfer. The mechanism is protected by a triple-lip seal, while Carbon-Ti’s externally adjustable Bearing Preload System (BPS) allows bearing preload to be fine-tuned without disassembling the hub.
The 12 × 148mm Boost spacing increases flange separation to support laterally stiff modern mountain bike wheel builds. Available with Shimano/SRAM HG, SRAM XD, SRAM XDR, or Shimano Micro Spline freehub options, the X-Hub SP Boost uses a 6-bolt disc rotor interface and is offered in 24- or 28-hole configurations.
With a claimed weight of approximately ~198g, depending on freehub and drilling, the X-Hub SP Boost is intended for lightweight, responsive XC and marathon wheels. It is designed and manufactured entirely in Italy.
Compatibility Note: The X-Hub SP Boost is designed specifically for the 12 × 148mm Boost standard and cannot be converted to 12 × 142mm or quick-release spacing. Carbon-Ti states that warranty coverage is void when the hub is used on an electric-assist bicycle.
Product Details
Wheel Building Information
Carbon-Ti recommends building the wheel so that the spokes do not contact each other at the crossings. This reduces unwanted flange torsion and prevents noise caused by spoke friction.
Custom Wheel Building
Carbon-Ti straight-pull hubs require careful spoke selection, lacing, and tensioning. Contact Fair Wheel Bikes for a custom wheel build or help selecting compatible rims and spokes.