The DUKE Lucky Jack ULTRA SLS4 is the lightest 29″ carbon rim ever designed by DUKE Racing wheels. By exploiting the SLS technology we were able to lower the weight of the Lucky jack Ultra SLS4 to 255g while maintaining the same characteristics as the previous version. The same strength and rigidity that made the reputation of Lucky Jack. It’s the ultimate weapon for demanding races. Light, rigid, resistant and ultra nervous its will face all situations. The Hookless system makes it more resistant and offers better tire strength, allowing inflation at low pressure.
TECHNICAL CHARACTERISTICS
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SLS4 (Super Light Series)
The SLS4 rims are 10% lighter than previous version, while maintaining exactly the same strength and stiffness. More.
DUKE Original Profile
In 2 words, Duke Technology. DUKE is proprietor of the manufacturing tools and processes for its alloy rims and of the moulds for its carbon models. More.
Hookless rim
This type of rim is far stronger than the traditional clincher rim. We have used this technology with great success, on our rims since 2011. More.
Burp-Free system
The bead of the tyre is held in position irrespective of the tyre pressure and the ground conditions, preventing any risk of the tyre coming off its rim even when giving it full gas in the corners. More.
Asymmetric (Offset) profile
By offsetting, we can increase the wheel’s lateral strength and its stability without adding weight. Rim drillings are off-centre to improve bracing angles for a stronger, more rigid wheel. More.
Heavy Duty Building Concept
The HD, or “Heavy Duty” wheel design is perfect for all types of terrain. Available only on carbon rims and certain alloy rims (such as the Fury Star SL, Fury Star). More.
Wide inner rim
A wider profile rim increases the sensation of comfort, for the rider, compared to a similar width tyre mounted on a narrow “standard” rim because of the increased air volume in the tyre. More.
Tubeless Ready
Our Tubeless compatible rims (UST, Tubeless Ready and Notubes), only require some Duke rim tape and a Tubeless-ready valve. They can also be used in a classic clincher set up (tyre & inner tube).
- Max system weight (rider+bike+equipement) :
50kg——————————————————————————————————– 75kg—————————————————— ———————————————–100kg - Utilization :
——————————————–XC—————————————– XCO————————————— Trail—————————————-AM——————————–Enduro - Terrain :
————————————————————————-Soft ——————————————————————Médium ————————————————————–Hard
- Max system weight (rider+bike+equipement) :
- Designed, developed and tested in France. Carbon (DUKE is the proprietor of all its carbon rim moulds) rim for Tubeless or standard clincher and inner tube.
- Asymmetric profile (offset 2,8mm for 30,5 and 28mm inner / 2.4mm for 24,5mm inner) : By offsetting, we can increase the wheel’s lateral stiffness and its stability without adding weight. Rim drillings are off-centre to improve bracing angles for a stronger, more rigid wheel. The rim is stronger, and the impact of crosswinds is reduced. Plus, with offsetting there’s a better balance between the drive and non-drive side spoke tensions and improved durability over the long-term.
- Extra wide 30,5 / 28 / 24.5mm inner rim width.. Increases tyre volume improve speed, comfort and grip, especially in the corners.
- A wider rim allows us to increase the volume of air in the tyre, this improves ride comfort. Also, the tyre is securely held between the rim sidewalls, making the bike more stable. A larger volume tyre also increases grip and speed. Even tyres inflated to a low pressure are securely held between the rim sidewalls and the impact of the tyre displacing around the rim is reduced. The bike is more stable and the steering cleaner. We can also fit a narrower tyre to a wider rim without losing any volume compared to a similar width tyre fitted to a narrow rim, with the result a gain in inertia, the narrower tyre being that much lighter.
- Hookless rim, this type of rim is far stronger than the traditional clincher rim. We have used this technology with great success, on our rims since 2011. The tyre is fitted as per a traditional clincher, and is securely held in place similarly to a clincher rim
- Lateral stiffness remains unchanged compared to the previous version of this wheel.
- Impact resistance, even on the roughest terrain: impact energy absorption is improved by more than >50% compared to the first SLS version of this wheel.
- Crash Replacement :We automatically include a lifetimeCrash Replacement package with the sale of any of our carbon wheels. In the event of an accident or heavy crash resulting in damage to your rim rendering it unusable, we will replace it at reduced cost:
– 50% off the price, of a new rim, parts and the labour.
– Unlimited lifetime package included with the purchase of a pair of any DUKE carbon wheels.
More. - Lucky Jack ULTRA SLS4 profil :
