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DUKE RIM FURY JACK SLS5 FRONT

Name: DUKE RIM FURY JACK SLS5 FRONT
Brand: DUKE RACING WHEELS
SKU: JANTE DUKE FJ SLS5 FR
Price: 524 EUR
Availability: InStock

Gravity = aluminum? Think again.
With the new DUKE Fury Jack SLS5, Enduro, DH and aggressive e-MTB finally get the carbon performance they deserve. Vertical compliance, strength, and reactivity—no compromises.
Key technologies & processes:
- SLS5: Optimized carbon fiber lay-up + aerospace-grade resin
- SpokeCore: Molded spoke holes that eliminate the need for drilling
- ImpactGuard: Integrated energy-absorbing inserts
- 6TERS: Differentiated internal widths for the front and rear wheels
The result: Featherweight. Heavy-hitting. Backed by a 3-year warranty and -50% crash replacement.

420 g

€524.00 Tax included

5 In stock

Expected shipping date: 31/07/2025

Quantity

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New DUKE Gravity Range — Fury Jack SLS5
FEATHERWEIGHT. HEAVY-HITTING.

Maximum strength for Gravity & E-MTB use:
Fury Jack: Enduro / DH / Aggressive E-MTB
Aluminum is no longer your only Gravity/E-MTB option
Integrated 6TERS concept:
Asymmetric internal width for terrain-optimized performance:
Front: 33 mm – Grip & control
Rear: 31 mm – Stability & strength
Optimized weight:
Crazy Jack rims: 355 g (33 & 31 mm) Fury Jack rims: 420 g (33 mm) / 460 g (31 mm)
SLS5 carbon layup technology:
10% lighter than previous SLS4 generation
15% more vertical compliance for improved riding dynamics

ImpactGuard and SpokeCore innovations
Stronger. Smoother. Snappier. Time to send it.

No Mercy
Proven at the highest level, our Fury Jack wheels take on the world’s roughest courses: EDR World Cup, E-EDR World Championships, E-Bike World Tour, and the legendary Megavalanche in Alpe d’Huez.
Riders like Rémi Absalon, Hugo Pigeon and Emeric Lenzer (Moustache SR Suntour E-Team) push them to the limit. Their feedback helped us fine-tune the rims’ ride feel to deliver what we do best: a wheel that’s strong, responsive, forgiving, and precise. Gravity, uncompromised.
Built for Performance
Our SLS5 (Super Light Series 5) process combines optimized carbon fiber layups with an exclusive aerospace-grade resin.

10% lighter than its SLS4 equivalent.
15% more vertical compliance for better dynamic response.
Increased resistance to lateral stresses and vertical impacts.
Enhanced vibration damping for greater comfort and control.
We’ve also introduced two groundbreaking technologies:
ImpactGuard – Energy-Absorbing Inserts
High-resilience inserts, pressure-injected into hollow cavities on either side of the rim, absorb both low and high-intensity impacts. They offer maximum protection without adding unnecessary weight – their density is comparable to our carbon fiber.
SpokeCore – Molded Spoke Holes

Thanks to an advanced manufacturing process, the spoke holes are directly molded into the rim structure. This eliminates the weaknesses and rigidity alterations often caused by drilling. The result :
a one-piece construction that increases durability, allows for fewer spokes, maintains precise stiffness control, and ensures exceptional reliability.
See below for a full overview of DUKE RACING WHEELS technologies integrated into the Crazy Jack & Fury Jack SLS5.
It’s Going to Pop
In Gravity riding, lighter wheels mean quicker line changes and easier rhythm transitions.
But weight isn’t everything. With DRC (Dynamic Response Comfort) built into the SLS5 process, Crazy Jack and Fury Jack manage deformation and rebound with surgical precision.
What does that mean on the trail?

More responsiveness
Energy stored when entering a corner is unleashed for explosive acceleration out of it.
Better grip
Whether braking or accelerating, power transfer to the ground is optimized. You’ll feel more traction in corners and through technical terrain.
Increased comfort
Less fatigue in your upper body, even on long, demanding rides.
Greater control
Your bike feels calmer and more stable when the terrain gets rough.
Proven reliability
Unlike aluminum, carbon fiber doesn't fatigue under stress. By diffusing force across the rim, it reduces the risk of failure.

Technology

SLS2 Super Light Serie 2

SLS5 (Super Light Series 5)

An exclusive manufacturing process combining an optimized carbon fiber lay-up with aerospace-grade resin
- 10% lighter than the previous SLS4 generation
- 15% more controlled vertical compliance for enhanced ride dynamics
- Increased resistance to lateral loads and vertical impacts
- Better vibration filtering for improved comfort and control
DRC (Dynamic Response Comfort)

DRC (Dynamic Response Comfort)

Controlled vertical flex and rebound
- More dynamic handling during weight transfers and bermed corners
- Increased comfort on rough terrain
- Reduced energy loss, more speed and efficiency
SpokeCore

SpokeCore

Molded spoke holes that eliminate the need for drilling
- Preserves carbon fiber integrity
- Reinforces the structure
- Allows for precise control of vertical and lateral stiffness
- Reduced weight and increased reliability
Width

Optimized Internal Width

Maximizes tire volume and performance
- Enables lower pressures without sacrificing rolling efficiency
- Controls tire deformation for greater stability
- Improves control and comfort on all terrains
VFP (Varnish Free Process)

VFP (Varnish Free Process)

A varnish-free finish process
- Reduces VOC emissions and carbon dust during production
- More scratch-resistant surface
- Naturally glossy finish
Offset

OFFSET

Asymmetrical spoke lacing
- Balances spoke tension on both sides
- Improves lateral stiffness, stability, and long-term durability
- No added weight
6Ters

6TERS

Differentiated internal rim widths for the front and rear wheels
- Wider front rim increases grip, handling, and control
- Narrower rear rim for better strength, stability, and efficiency
- Developed in partnership with leading XC race teams
Hookless

HOOKLESS

Hookless rim design
- Lighter than traditional hooked rims
- Increases the tire’s internal air volume, boosting comfort and grip at lower pressures
- Proven DUKE technology since 2011
AntiBurp

AntiBurp

Anti-burp and anti-debeading system
- Specially designed inner rim hooks lock the tire beads securely
- Eliminates air loss under heavy cornering or compression
- Prevents tire debeading, even in the event of a puncture
Anti-pinch

AntiPinch

Anti-pinch rim bead design
- Prevents tire cuts from hard impacts
- Dissipates shock energy
- Allows low-pressure riding without pinch-flat risks
Tubeless Ready

Tubeless Ready

Tubeless-compatible rim design
- Compatible with UST and Tubeless Ready standards
- Also compatible with tube-type (clincher) setups