Hubs

R45D hubs combine a lightweight hub body, our legendary made-in-house bearings, and a six-bolt rotor mount to harness the power of disc brakes. The result is the increased power and modulation of disc brakes, the fast, smooth rolling speed of our bearings, and the rail steering from our one-piece solid axles. Our bearings, available in steel and ceramic, have heat-treated, surgical-grade steel races that are machined simultaneously, with tools of equal wear to ensure perfectly matched inner and outer races. The quality and speed of our bearings is what sets us apart from the competition and they are what you will feel and notice on every single ride. As Chris King bearing tracks burnish they get faster with age and all our hubs and bearings are fully serviceable for years upon years of demanding use. - Engineered, manufactured, and assembled in Portland, Oregon USA - 5-year built-to-last warranty - Legendary made-in-house bearings - Easily serviceable and completely re-buildable with our R45 Hub Service Tool - Available in 9 beautifully anodized colors - Ceramic bearing upgrade available

Light weight hub body and disc brake rotor mount. King in-house made bearings use surgical steel races machined at the same time to ensure a perfectly matched inner and outer race. - Easily serviceable and completely re-buildable - 5-Year warranty - Hub Drilling: 32 - Hub/Brake Compatibility: Center-Lock Disc - Color: Black - Spoke Interface: J-Bend - Front Axle: 12mm Thru x 100mm

The Boost 6-Bolt front is specifically for "Boost" disc spacing forks with 110x15mm "Boost" axles. Using the larger diameter hubshell bearing the Boost 6-Bolt is designed to tackle rough terrain and aggressive riding such as downhill and enduro. In an evolving landscape of axle specifications, we are confident that the "Boost" disc location is here to stay. Chris King Boost 6-Bolt front hubs are designed as precision mountain tools. We use one-piece axles to provide a stiff hub with rail accurate steering, transferring every minute adjustment you make to the trail. To thwart mud, water, and contaminants as you power through rough trails, Boost hubs have heavy-duty bearing seals and snaprings, that provide superior protection with ultra low drag. Our bearings, available in steel and ceramic, have heat-treated, surgical grade steel races that are machined simultaneously, with tools of equal wear to ensure perfectly matched inner and outer races. The quality and speed of our bearings is what sets us apart from the competition and they are what you will feel and notice on every single ride. As Chris King bearing tracks burnish they get faster with age and all our hubs and bearings are fully serviceable for years upon years of demanding use. - Steel Bearings - Engineered, manufactured and assembled in Portland, Oregon USA - King Lifetime Warranty - Wide flange placement - Fits 110x15mm Boost axles - Legendary made-in-house LD bearings - Easily serviceable with a 2.5mm hex and pick or pen knife - Completely re-buildable with our Universal Hub Service Tool - Responsibly lightweight - Ceramic bearing upgrade available - Available in 28, and 32 hole spoke count

WHY WE MAKE THIS Originally, we made this hub to be the cornerstone of our hub product line. It was one of those product releases where we put all our hub and bearing experience into, and ended up with a hub that struck that perfect balance between weight, performance, durability and looks. Since the advent of disc brakes (and the R45D), we keep making it, because it’s still that cornerstone hub, and so many of our riders still love to rock their rim brakes on road and off. WHY YOU WANT IT The R45 front hub is lighter and more aerodynamic than most built-to-last hubs on the market. We use a narrow hub body and low flanges to make the R45 a rock solid starting point for any fast wheel build. Our bearings, both steel and ceramic, have heat-treated, surgical grade steel races that are machined simultaneously to ensure perfect matching. The quality and speed of our bearings is what you will feel (and hear) on every ride. As Chris King bearing tracks burnish they get actually get faster. A little bit of regular love (i.e. service) will keep this hub rolling for years upon years of demanding use. -Steel Bearings - Engineered, manufactured, and assembled in Portland, Oregon USA - King Lifetime Warranty - Legendary made-in-house bearings - Easily serviceable with a 2.5mm hex and pick or pen knife - Completely re-buildable with our R45 Hub Service Tool - Available in 28h and 32h - Ceramic bearing upgrade available HUB SPECIFICATIONS - Axle Width: 100mm - Flange Diameter DS & NDS: 39.8mm - Center to Flange DS: 34.8mm - Center to Flange NDS: 34.8mm