Fulcrum Red Zone Carbon+ Wheelset - 29" | Carbon | 2-Way Fit | AFS - 15x110mm | 12x148mm Boost - Micro Spline

Welcome to the world of "Plus": the next evolution in MTB wheel technology from Fulcrum.

Fulcrum’s flagship wheelset for XC and Marathon racing has evolved with the feedback of elite riders. The Red Zone Carbon+ are the result of analyses and specific tests aimed at raising the performance of the Red Zone Carbon to the next level. This process involved the riders of the Buff-Megamo team who, along with other riders, tested different configurations for a year in race conditions, to find the perfect balance and the maximum performance possible.

Asymmetric rim: new lamination and many technologies

The fundamental aspect of the Red Zone Carbon+ rim is the use of a new mix of resins and FF100 unidirectional high modulus fibres, produced to Fulcrum’s specifications, whose complex positioning achieves performance characteristics at the top of the category, reduces the weight by 4-5% compared to the Red Zone Carbon and provides a superior ride feel.

The asymmetric NIP(PLE) FORCE profile is the most striking of the key technologies of this wheel.

The main advantage of this solution is a wheel system with a homogenous, uniform and reliable performance, as well as greater resistance to lateral stresses. This is achieved with a double asymmetry: 6mm on one side and 3.5 mm on the other. The first is designed to optimise the dish of the spokes on the side subject to most torsions (disc side on the front and freewheel on the rear) in order to rebalance the spoke tension. The second asymmetry, on the opposite side, is fundamental to achieve a spoke positioning that passes as close as possible to the centre of the geometrical section, decreasing the torsional moment typical of asymmetrical MTB rims.

A specific plastic support is sunk in the carbon, close to the nipple hole area: this is the DRSC™ (Directional Rim-Spoke Coupling) technology. This element provides greater stiffness, ensuring that the nipples are seated correctly in their seating, guaranteeing a uniform distribution of the forces, as well as a perfect alignment of the spokes between the rim and the hub.

The rims features a profile of 26 mm and an inner rim channel of 28 mm: the ideal formula to work with tyres from 2.2 to 2.4”. The inner rim channel does not have any holes on the bridge thanks to our MoMAGTM technology, which allows for an immediate, safe and easy tubeless use. Moreover the absence of holes increases the resistance and stiffness of the rim structure, compared to a drilled rim, as the fibres don’t have any interruptions. 

Technical details of Fulcrum Red Zone Carbon+ wheels

• Hub and bearings: USB™ - Ultra Smooth Bearings | The conical hubs, where the flange is milled into the bearing caps, offer the best possible fit for the spokes and maximize bending strength. The hubs run on axles made from an aerospace-grade aluminum alloy. This allows for minimal tolerances and perfect alignment, guaranteeing high performance and long-lasting reliability. This refined hub system is complemented by USB™ ceramic bearings (Ceramic Ultra Smooth Bearings): the ultimate in Fulcrum technology in terms of smoothness and reliability. The freehub pawl system has also been improved, while retaining three 36-tooth pawls. The new HT+ housings have a steel insert near the seat of the ratchets to ensure a more robust and durable hold. Pawls are still the first choice to ensure reliable engagement, easy maintenance and less friction when freewheeling.
• DRSC™ - Directionated Rim-Spoke Coupling | A system that is as simple as it is effective, born from both the expertise of Fulcrum's technicians and the careful monitoring of the results of the tests carried out daily on the wheels. Thanks to these, it has been possible to establish that the forces acting on the sides of the wheel, and therefore on the spokes, are very different from each other; but the differences between the front and rear wheels are also evident and significant. The front wheel must remain stable even when braking with the left-sided disk, while the rear wheel must make room for the sprocket set on the one hand and compensate for the power drive on the chain side on the other.
• AFS Axle System™ | The Axial Fixing System™ is the solution developed by Fulcrum® for fixing the disc brake to the hub. The constraint provided by the impact area of the release mechanism, which is larger than the standard release mechanisms, allows for greater structural rigidity and therefore more precise and efficient braking.