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Why Asymmetric MTB Carbon Rims?


The asymmetric design can insure the rims weight center point is in the central, build up into stiffer, stronger and more reliable wheels by improving the bracing angles of a dished wheel and equalizing the spoke tensions between the drive and non-drive side spokes.

So the asymmetric carbon rims for mountain bike can improve the chain-side weight, and make MTB riding more smoothly and faster.

If you look at the spoke bed of a low-profile Bontrager rear road wheel (like the Race X Lite or Race Lite), you'll notice that the spokes don't join the rim at the center. Rather, they're shifted slightly toward the non-drive side. Bontrager calls this design feature OSB, or Offset Spoke Bed. And here's why we do it.


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