The Chris King R45D XDR Rear Hub brings precision, speed, and durability together in one uncompromising package. Built to meet the demands of modern disc brake road and gravel riders, this hub pairs the brand’s iconic craftsmanship with cutting-edge performance for riders who notice every watt and every shift in traction.
At the heart of the R45D is the patented RingDrive™ system featuring 45 points of simultaneous engagement. The result is instant power transfer and a near drag-free ride that makes every pedal stroke count. Combined with Chris King’s in-house machined bearings—renowned for their smoothness and longevity—this hub delivers the silky roll and precise control that discerning riders expect.
The fully serviceable and re-buildable design means this hub isn’t just a high-performance upgrade—it’s an investment built to last season after season. Finished in a striking Matte Jade, it’s a piece of functional art that performs as beautifully as it looks.
Fast engagement: 45-tooth RingDrive™ system provides immediate power transfer with minimal drag.
Legendary bearings: Hand-built, precision-machined bearings ensure unmatched smoothness and durability.
Disc brake ready: Optimized for modern 12 x 142mm thru-axle setups with XDR freehub compatibility.
Fully serviceable: Easily maintained and completely re-buildable for long-term performance.
Made in the USA: Precision-engineered at Chris King’s Portland facility for uncompromising quality.
Specifications & Identifiers
Axle Size
12mm
Bearing Type
Sealed Cartridge
Brake Type
Center-Lock Disc
Cassette / FH Body Type
SRAM XDR
Color
Matte Jade
Defined Color
Green
Designed for ebike
No
Hub Spacing
142mm
Skewer Included
No
Spoke Count
24, 28, 32
Spoke Interface
J-Bend
Matte Jade - 24h UPC
841529275513
Matte Jade - 24h MPN
GAG2AA4
Matte Jade - 28h UPC
841529275636
Matte Jade - 28h MPN
GAG2BA4
Matte Jade - 32h UPC
841529276152
Matte Jade - 32h MPN
GAG2CA4
Tree Fort ID:
333222473589
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