Reserve 40/44 GR R45D

Why We Make It 

What even is gravel riding? It runs the gamut from leisurely off-road exploration to speed-focused dirt and single-track riding. This wheel is more of the latter than the former, with an aerodynamic profile and low rim weight. It aptly fills the need for a rugged, high-performance wheelset in our product lineup. 

Why You Want It 

Reserve’s 40|44 GR rims are a 40mm front paired with a 44mm rear, built wide enough to accommodate tires up to 50c. Reserve uses internally reinforced spoke holes to strengthen the area of the rim that experiences the most force around the spoke nipple.  

We pair the 40|44 rims with our R45D™ Centerlock hubs, powered by our patented RingDrive™ system. You want them because their 45 points of simultaneous engagement deliver instantaneous engagement and superior power transfer. We wrap the system in a lightweight hub body, along with our legendary made-in-house bearings, and finish them with a one-piece axle that delivers laser-precise bike handling. In short, these hubs just roll faster, last longer, and look better than anything else out there.   

Chris King 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 actually get faster (we have data), which means the more you ride, the faster they get. A little bit of regular love (i.e., service) will keep these hubs rolling for years upon years of demanding use. 

This wheelset comes with the legendary “angry bee” sound, and you can choose from a bunch of sharp hub colors, including basic black.