Wheelset 29" AM EN | Ursus Straightpull 6-hole hubs | Duke Carbon rims
intended use : All Mountain AM, Enduro EN
Stable, functional and inexpensive - this is how this wheelset can best be described. The combination of Duke carbon rims and the robust Ursus hubs should therefore always be on the shortlist. The balanced selection of components guarantees you high reliability and a long service life.
Ursus is an Italian bicycle company based in Rosà, a small town in northern Italy. With almost 50 years of experience in development and manufacturing, they have built a comprehensive portfolio of bicycle components. All components are developed in-house, manufactured and tested on modern CNC machines, ensuring consistently high quality.
The Ursus XD51 is the right choice for anyone looking for a comparatively light and stiff hub. This is achieved by using aluminum 7075 and a 15 mm axle . By choosing large bearings with a good LLU/LLB seal and additional splash protection in front of the bearings, a long service life with minimal maintenance is achieved.
The special shape of the 6-hole mount ensures optimal distribution of the braking forces and thus leads to a more sensitive braking feeling.
Duke has managed to improve the rims compared to the SLS3 version. In doing so, they have once again pushed the seemingly technically possible limits. 30 mm wide rims weighing less than 400g (Crazy Jack) are a direct challenge to the competition.
How did the French accomplish this? They took a closer look at the individual elements of the rim and looked for optimization options. In particular, a new resin was used. This not only made it possible to slim down, but also increased impact resistance at the same time. Similar to the SLS3 production process, reworking or painting is not necessary after production.
The rim flange is hookless and reinforced. This prevents damage in the event of possible punctures. In addition, the anti-burp technology prevents the tire from slipping or jumping off the rim and thus possible loss of air.
The rim has an asymmetrical rim profile, which allows for a more uniform angle of attack for the spokes. This optimization of the spoke angle brings with it a number of advantages. The spoke tension on both sides can be better adjusted, which improves the durability of the spokes and the entire wheel. The normally directional lateral stiffness is also adjusted so that the wheel becomes stiffer.
With the “6Ters” concept, Duke takes individual paths. The cross section of the rims is different on the front and rear wheels. At the front, the larger internal width allows for more grip and rigidity, while at the rear, emphasis is placed on impact resistance and comfort
Wheel construction at R2-Bike
Our wheels are assembled entirely by hand by our wheel builders. During the entire construction, it is important to ensure that not only the concentricity is correct, but also that the spoke tension is as even as possible. This special care allows us to offer a lifetime guarantee against broken spokes, as long as they are not caused by violence.
The following services are also already included:
You get a universal wheel bag for all common sizes.
You will receive a replacement spoke with a nipple in all the required spoke lengths so that you can repair the wheel at short notice after an accident.
You will receive a free initial inspection of the wheel, where the resulting work is completely free of charge. Only shipping costs are charged.
You get a crash replacement promise: If your wheel is damaged due to force majeure, we will rebuild it once. We offer a 100% discount on all labor costs and only charge for the material.
intended use : All Mountain AM
Wheel size: 29" (ETRTO: 622 x see detailed description)
Rim type: Clincher (clincher and folding tires)
Brake type: disc brake
Brake disc mount: 6-hole
1453g (lightest variant: Boost + Boost SRAM XD, Crazy Jack 6Ters, Sapim CX-Ray)
1742g (heaviest variant: Boost + Boost Shimano MS, Fury Jack 6Ters, Sapim Race)
Due to manufacturing fluctuations in all components, deviations in weight are possible. The information is usually determined without rim tape, valves and decals/rim stickers.
The delivery time stated refers to the usual time it takes to build the wheelset and does not reflect the availability of the individual parts.
If you would like a special lacing on the rear wheel, e.g. for the Cannondale Ai rear triangle or for EVO6, please contact our service team.
Scope of delivery:
1x complete wheelset, fully assembled (hubs, rims, spokes and nipples)
1x balance bike bag
4x replacement spokes including nipples
1x construction certificate
2x hologram stickers