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Wheelset 29" AM EN | Ursus Straightpull 6-Hole Hubs | Duke Carbon Rims

Item number:
Product weight: 1453 g
Brands: r2-bike

from 1.397,50 €
MSRP: 1.678,68 €
You save 16,75%, that is 281,18 €

including 19% VAT. , free shipping (DE) / shipping time info (Sperrgut)

handmade - in about 4 - 6 weeks
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Ursus Front Hub Straightpull 6-Hole
Ursus Front Hub Straightpull 6-Hole
  • Brake disc mount: 6-hole
    Spoke type: Straightpull (straight)
    Bearing: 2x industrial deep groove ball bearings
    Color: Black
    Weight: 139g

    With the 110 millimeter wide BOOST hub, stiffer wheels with a more even spoke angle on both sides can be built thanks to a wider flange spacing.

Ursus Rear Hub Straightpull 6-Hole
Ursus Rear Hub Straightpull 6-Hole
  • Brake disc mount: 6-hole
    Spoke type: Straightpull (straight)
    Bearing: 4x industrial ball bearings
    Freewheel type: 3 pawls / 30 detents per revolution
    Freewheel compatibility: 12-speed Shimano Micro Spline 
    Color: Black
    Weight: 266g

    With the 148 millimeter wide BOOST hub, stiffer wheels with a more even spoke angle on both sides can be built thanks to a wider flange spacing.

Duke Rims Carbon All Mountain - Enduro
Duke Rims Carbon All Mountain - Enduro
  • Area of ??application: All Mountain AM, Enduro EN
    ETRTO: front 622x32,3 - rear 622x29,9 mm 
    Inner width: front 32.3 mm - rear 29,9 mm
    Outside width: front 39 mm - rear 36 mm
    Rim height: front 24 mm - rear 22 mm
    Offset: front 3.0 mm - rear 3.0 mm
    Recommended tire width: front 2,3" - 3,0" (58 - 76 mm) - rear 2,1" - 2,8" (53 - 71 mm)
    maximum tire pressure: 2.2 bar maximum (2,2" Tire width)
    system weight: 130 kg (driver, bike, clothing and possibly luggage)
    Color / finish: black / UD silk matt
    Weight: front 441g - rear 507g

  • Application: Road, Gravel, Cross Country, Trail
    Weight incl. nipple: approx. 5.45g (1 piece)

    The wing spoke made of cold drawn Sweden steel has an elliptical shape which takes advantage of the flat, light and aerodynamically more favorable but weak aero spoke and the stronger but less aerodynamic and heavy classic round spoke. This gives it the diameter necessary for torque transmission and at the same time favorable and superior aerodynamic properties with low weight!

Colour Spoke Nipples
Colour Spoke Nipples
  • The nipples are made of brass in order to achieve the best possible and long-lasting result in terms of color. The robust material is insensitive to corrosion and does not stick to the thread of your spokes, so that re-centering is still possible without any problems even after years of use. In addition, they are neither attacked nor damaged by any sealing milk that may have got into the rim well.

    Weight per piece: 1.0g

Rim Tape | Tubeless Kit
Rim Tape | Tubeless Kit
Your configuration
Product details


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.

Technical data:

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