Specifications| Weight | 217 grams |
| Bearing Size | proprietary hybrid ceramic |
| Axle Diameter | 16.5 mm |
| Available Drillings | 24, 28, 32 hole |
| Available Colors | black, brown, red, silver, gold, |
| navy, pewter, mango, green, pink |
| Use | road only |
|
| Wheel Building Dimensions |
| Left Flange Diameter | 51.0 mm |
| Right Flange Diameter | 51.0 mm |
| Left Flange to Center | 34.6 mm |
| Right Flange to Center | 18.9 mm |
Detail
The R45 series is Chris King's response to market demand for a purpose-built road racing hubset. The R45's predecessor, the "Classic" series, was originally designed for mountain use, and merely adapted to standard road widths. Overbuilt bearing seals and the patently loud ratchet system that made these hubs so popular for mountain bikers hindered their success in the road market. Reengineering of that classic design has yielded a hub set with lower seal drag, quieter operation, and a 20% lower overall weight. The R45 hubs are also available in the lower spoke hole counts popular in modern road wheel sets. As with all of Chris King's products, these hubs feature immaculate finish work; the hub shells are highly polished prior to anodizing, which yields a deep, vibrant hue to each of the ten color options.
The R45 rear hub features a beefy 16.5 mm aluminum axle with a simple, on-the-go preload adjustment. Partial disassembly and service of three of the hub's four bearings is possible without specialized tools. To fully disassemble this hub, a Chris King Hub Service Tool Kit is required. At the heart of the R45 rear hub is Chris King's patented RingDrive. This clockwork-style rachtet system features 45 teeth for fast, secure, and quiet engagement.
Please note that R45 rear hubs are currently only available with Shimano style freehub bodies, compatible with Shimano and Sram cassettes.
Ceramic Bearings
These special R45 hubs are equipped with low friction hybrid ceramic bearings; developed, tested, and manufactured in-house at Chris King Precision Components. Built to the same high quality standards as their stainless steel bearings, these bearings are filled with a minimal amount of low viscosity, silicone-based lubrication for the lowest possible drag and best possible race-day performance.
Chris King products are manufactured with pride and confidence in Portland, Oregon, USA. R45 hubs are covered under a 5 year warranty against manufacturing and materials defects.
Assembly
We recommend that wheels with Chris King hubs be built by an experienced wheelbuilder. We are happy to provide this service, and can provide helpful suggestions in rim and spoke selections. Please contact us directly or submit a form for a custom wheelbuild here.
