DUKE RIM LUCKY JACK HD SLS4
Lucky Jack HD SLS4 are reinforced Lucky Jack SLS4, for use on very rough terrain such as that found in French Cups or World Cups. Front/rear widths are differentiated: 30mm/28mm or 28mm/26mm depending on tire section.
The multiple champions of the World rim with Titouan Perrin-Ganier and Pauline Ferrand-Prévot, Europe and France! Used by the best teams and riders in the world (Absolut Abasalon BMC Racing Team, Team Scott Creuse O2, Velcan MTB Racing Team etc ..., as well as a certain champion of the Netherlands on Road, MTB and CX and also CX World Champion.
DUKE RIM LUCKY JACK HD* SLS4 6TERS*
The Lucky Jack by DUKE is a very light and broad rim for cross country and marathon use. Weighing 330g the weight is surprisingly low. Great value have the dimensions of the rim. With 30mm inside the rim provides not only an excellent lateral stiffness, but also the tire optimum support width. Also at low air pressure, the driver (in) no spongy driving feel, as the tires can snap off bad side. Grip and comfort of the tire increase remarkably! Of course, the rim can be driven with sealing Tubeless "milk". The wheels are provided with an asymmetrical rim profile (as robust as a symmetrical profile), which requires a more uniform pitch angle of the spokes. This optimization of the spoke angle brings a number of advantages. The spoke tension on both sides can be better matched to one another, what is the shelf life of the spokes and the entire impeller conducive. The normally directional lateral stiffness is also adjusted so that the wheel appear rigid in itself. The height of the rim edge for 2015 is reduced by 1mm to further limit any risk of contact with the ground. Lateral stiffness improved by 40% compared to the first version. Resistant to impacts even on the most brittle ground: Absorption of impact energy improved by more than 50% compared to the previous model. Anti-burp system: the heel of the tire is held in position whatever its pressure, no risk of "unseating". For the rim a Rider.
MTB rims profiles are differentiated as we do not ask the rims the same qualities while riding :
A front wheel must give grip, be light, stiff and handy.
A rear wheel must be more comfortable, tronger and offer more efficiency.
Thus the front and rear wheels have different profiles and lay-ups.
In collaboration with Julien Absalon, the 6TERS front and rear profiles complement each other for a greater efficiency in the trails.
Many of you are aware of different needs because you are already using different section tires at front and rear wheel.
The Duke 6TERS* concept offers a wider front rim than the rear rim for more grip and stiffness. Its weight is optimized for robustness.
The rear profile is reworked with a reduced section, with a new carbon fiber layer to improve compliance and increase the impact resistance, the constraints being much more important on the back wheel. For the 3rd SLS version we now offer 3 rim widths 26, 28 and 30mm between hooks.
SLS4 Factory Process.
All our carbon MTB rims now benefit from the manufacturing process tested and approved by the Super Light Series, which offers a 10% gain in rim’s weight compared to the SLS3.
This manufacturing process goes even further today as it is now made under dust-free laboratory and no longer requires sanding nor painting.
SLS4 products have an excellent aesthetic appearance, right out of the mold.
As no longer painted, the rims can not be scratched.
Impact resistance is not left out, since it is also improved compared to the previous version.
SLS4 rims are built from UD carbon fiber.
Anti-Pinch
Rim’s sidewalls are thickened to prevent cut of tires during impacts. ( *HD = Heavy duty / *6TERS = sisters = sœurs)
Technology
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Hookless
This technology has been successfully used on our MTB rims since 2011. It reduces rim weight. Strength is improved. The tire is slightly bigger. Carbon rims are simpler and more economical to manufacture.
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VFP (Varnish Free Process)
Since 2021, our carbon rims benefit from a unique finish: incomparable brilliance and reflections thanks to a new process called VFP without varnish. This, also and above all, makes them more environmentally friendly by drastically reducing VOC and carbon dust emissions compared with a traditional rim. Without varnish, the rim is also harder on the surface, and more resistant to scratches.
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SLS4 (Super light series 4)
The SLS4 series for mountain bikes is 10% lighter and more resistant than the sls3 version thanks to a completely new lay-up and a new resin which not only allow the same lateral stiffness to be maintained but also and above all to considerably improve comfort, vibration filtering and rim performance. The SLS4 is always manufactured in a sealed atmosphere and does not require any retouching when it comes out of the mould. No rework or varnish, the VFP gloss finish is ecological and exceptional!
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6Ters
6TERS is a concept of MTB rims differentiated between front and rear: a front wheel must maximize grip (inner width +), handling (rotational weight -) and control (lateral stiffness -). A rear wheel must provide traction, comfort (vertical stiffness-), stability (lateral stiffness +), efficiency (inside width -) and be stronger (reinforcements). Developed in collaboration with Julien Absalon (five-time world champion).
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AntiBurp
Thanks to this antiburp, the tire bead is held in position at all low pressures and under all loads, so there's no risk of the bead sliding off the rim or losing pressure even when cornering hard. Two edges prevent the tire beads from sliding horizontally towards the inside of the rim. Even after a puncture, the tire stays in place on the rim
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Anti-pinch
Rim’s sidewalls are thickened to prevent cut of tires during impacts.
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Tubeless
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).
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Ultimate Comfort
Thanks to the latest innovations and our research into composite material, we have been able to develop a unique process that maximizes compliance and absorbs vibrations. The result is an ultra-dynamic rim that filters out the imperfections of the terrain to be appreciated whatever the distance.
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Offset
Rim offset increases lateral stiffness and wheel stability without adding weight. The rim holes are off-center, improving the spokes brace angles. By better balancing the tensions between the two spoke sides, the wheel's durability is enhanced.
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Width
A wider rim provides greater comfort for the same tire cross-section, thanks to the greater volume of air in the tire. No need to inflate so much! The greater volume also enhances performance and grip. The bike's stability when cornering is also improved: a wider inner width reduces tire rolling under the rim under lateral loads. Using a wide rim improves comfort and control.
Data sheet
- RIM MATERIAL
- CARBON
- RIM PROFILE
- ASYMMETRIC
- RIM HEIGHT (MM)
- 20
- INSIDE WIDTH (MM)
- 28.0
30.5 - TYPE OF BRAKING
- DISC
- MAX STRAIN (N)
- 1200.0
- PRACTICE TYPE
- XC
XC ENGAGED - NIPPLE POSITION
- EXTERNAL
- NIPPLE HEIGHT (MM)
- 14.0
- TYPE OF TYRE
- CLINCHER
TUBELESS - VALVE HEIGHT (MM)
- 34
- TAPE WIDTH (MM)
- 30.0
32.0 - MAX PRESSURE (BAR)
- 2.3B WITH 2.25" TYRE
- ERD JANTE(S)
- LJ 28 : 599
LJ 30 : 599 - SYSTEM MAX WEIGHT (KG)
- 115
- ETRTO (MM)
- 622.0
- RIM OFFSET (MM)
- 2.8
- MOUNTING WITH WASHERS
- NO
- POSITION
- FRONT
REAR - TYRE SECTION RANGE
- 48MM 1,90" / 66MM 2,60"
53MM 2,10" / 71MM 2,80" - RIM MODEL / WIDTH STICKERS
- LUCKY JACK 28 / 52MM
LUCKY JACK 30 / 54MM - STICKERS RANGE
- DUKE SERIE2 L
- STICKER TYPE
- L52
L54 - WARRANTY
- 3 YEARS
All Duke by JPRACINGBIKE1 wheels are assembled by hand in Vendée, France.
Crash replacement
We offer a crash replacement programme for carbon wheels. In case of accidents or heavy falls, violent shocks can damage your rim and make it impossible to use. With our Crash Replacement offer we offer you a service that allows you to replace your rim under special conditions: You get a 50 percent discount on the price of the rim (UD SLS carbon) 40 percent (3k Carbon), as well as the parts and the disassembly/reassembly. This offer is valid (for life) for an unlimited period of time for DUKE carbon rims and is transferable in the event of sale of the wheels to a third party.