100% Guarantee DUKE Rim 29″ Lucky Jack SLS4 6Ters 28 UD-Carbon

DUKE rim 29″ Lucky Jack SLS4 6Ters 28 UD carbon

Duke has managed to improve the Lucky Jack compared to the SLS3 version. In doing so, they have once again pushed the apparently technically possible limits. A 28mm wide rim weighing just 302g is a direct challenge to the competition.
How did the French do 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 to increase impact resistance at the same time. Similar to the SLS3 production process, post-processing or painting is not necessary here either.

The rim has an asymmetrical rim profile, which allows a more even angle of the spokes. This optimization of the spoke angle brings with it a multitude of advantages. The spoke tension on both sides can be better adjusted to each other, which is beneficial to the durability of the spokes and the entire wheel. The lateral stiffness, which is normally directional, is also adjusted so that the impeller itself becomes stiffer.

With the “6Ters” concept, Duke goes its own way. The cross-section of the rims is different on the front and rear wheels. At the front, the larger inner width allows for more grip and rigidity, while at the rear, emphasis was placed on impact resistance and comfort.
The SLS4 6Ters 28er rim is intended for the front wheel and represents the ideal combination with the 26er on the rear wheel, but can also be installed at the rear in conjunction with the 30er at the front.

3 year guarantee on carbon rims
Duke selects the materials used very carefully in order to be able to offer you the best possible product. Therefore, the quality standards for all products, subcontractors and partners are very strict. Duke guarantees for a period of three years that the rims offered will not have any hidden defects. However, improper assembly or use of the products will void the warranty.

Furthermore, Duke offers a crash replacement for its carbon rims. In the event of an accident or serious fall, violent impacts can damage the rim and make it impossible to use. With this offer, Duke offers you a service with which you can replace your rim within two years from the date of purchase at special conditions: you receive a 30% discount on the price of the rim you have purchased.

We would be happy to make you an offer for a complete custom wheelset with hubs and spokes of your choice. Please send us an email to ! Technical specifications:

Area of intended use : Cross Country, Marathon, E-Bike-XC
Materials: carbon
Rim Type: Clincher (clincher and folding)
Brake type: only for disc brake
ETRTO: 622×28
EARTH: 599mm
Internal width: 28mm
External width: 34mm
Rim Height: 20mm
Offset: 2.8mm (asymmetric)
Number of holes: 24, 28 or 32 holes
tubeless capable: yes
ASTM classification: n/a
recommended tire width: 1.9″ – 2.6″ (50-66 mm)
Maximum tire pressure: max. 2.5 bar (at 2.1″ tire width)
Maximum system weight: 110 kg (rider, bike, clothing and possibly luggage)
maximum spoke tension: 1100 – 1200 N
Features: asymmetrical rims for optimal spoke tension
Valve hole bore: 6 mm (SV)
Finish: UD carbon satin finish
Color: Black

Weight according to the manufacturer: 290g
Weight weighed: 302g

Scope of delivery: 1x DUKE rim 29″ Lucky Jack SLS4 6Ters 28 UD carbon