Now available in a 27.5” version!
The Jones C-Rim combines the light weight and strength of carbon fiber with a 56mm outer and 49mm inner width, a hookless design, pronounced bead lock, and 3.5mm rounded sidewalls for almost absurd strength as well as a profile that protects the tire under hard impacts. The wide, 49mm inner width spreads the tire's beads, making for a tire that folds over less at low pressures while corning hard, and resists bottoming better during hard impacts. The rim has a very pronounced bead-lock for reliability when run tubeless. At 595g (average) for the 29” version and 545g (average) for the 27.5”/650b version, the C-Rim is about 100 grams lighter than the most comparable, but narrower, aluminum rim and may just be the strongest rim ever made. Jeff spent a lot of time getting everything just right: the spoke holes in both drillings are all in line, to optimize the bracing angle of the spokes. The 6mm offset of off-center drilled rim allows for more balanced spoke tension when used with asymmetrical--such as most rear and some front--hubs. We've been riding the widest rims that our manufacturer made previously pretty extensively, and we've found them to be very durable, but they don't have the width or the sidewall profile that we wanted, so this rim not only gets those features, but it also gets a deeper profile which increases strength even further. During their in-house testing, our manufacturer found this to be the very strongest rim they had tested, and during our in-house (and outdoor) testing, we've found it to be able to handle anything and everything we've been able to throw at it.
While the Jones C-Rim is designed to be the best Plus rim around, it also works great with tires down to about 2.3” wide, where it will spread the beads apart to maximize air volume and tire stability.
The Jones C-Rims are available in 29” (622mm BSD) or 27.5”/650b (584 BSD) sizes, with centered or offset spoke hole drilling
- Centered drilling for symmetrical hubs, such as Jones front hubs
- 6mm off-center drilling for rear wheels or asymmetrical hubs in general. With a 148x12mm rear hub, we suggest using the 6mm off-center drilling because the result will be a dishless rear wheel.
- All C-Rims are 32 hole.
- 29” (622mm BSD) C-Rims have a 584mm ERD.
- 27.5”/650b (584mm BSD) C-Rims have a 547mm ERD.
By using the centered C-Rim with a hub with flanges that are spaced widely and evenly, such as the Jones 150-F Hub, you will have a super strong, dishless front wheel, which can then be paired with a rear wheel built around a 148x12mm rear hub in combination with the 6mm off-center drilled Jones C-Rim to create a dishless wheelset. Having a dishless wheel means that you have even spoke tension on both sides of the wheel, making the strongest-possible structure: yet another reason why the Jones C-Rim will help make the strongest wheelset around!
Check out a video of some early testing on the C-Rim here!
Here are some photos of the new 27.5" C-Rim on a Jones Plus SWB set up for touring.
