An advanced semi-slick for faster gravel, Panaracer launches the GravelKing ZX

Panaracer takes a step further in the evolution of fast gravel with the launch of the new GravelKing ZX, a tire that aims to solve one of the major dilemmas of modern off-road cycling. The increasing mix of surfaces in races and routes has rendered many traditional configurations obsolete, forcing a choice between rolling fast or maintaining control when the terrain gets tricky. The ZX is born precisely to respond to that tension point between surfaces and styles.

One tire for everything, that’s the new Panaracer GravelKing ZX

Rarely are gravel routes a succession of compact tracks, and most routes resemble a chain of asphalt, fast roads, loose areas, and even technical sections. In that context, the classic concept of a specific tire may fall short.

Panaracer interprets this evolution by proposing a finely tuned hybrid approach. The GravelKing ZX does not seek to be the most aggressive or the fastest in absolute terms, but to maintain a constant operational balance without forcing the cyclist to adapt their pace or riding style based on the terrain.

This is where its most relevant technical approach comes in, a design of the tread divided into three clearly differentiated functional zones.

Three zones, three behaviors, one casing

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The tread pattern of the ZX is not simply a combination of knobs. It is structured so that each zone comes into play based on the dynamics of the bike.

In the center, there is a practically smooth band, designed to reduce rolling resistance when the tire is working in a straight line. This design brings its behavior closer to that of a pure semi-slick on asphalt or compact gravel, where efficiency is key.

As the tire begins to lean or enters a braking phase, an intermediate zone with a transition pattern comes into play. This section is key from a dynamic perspective because it prevents the classic “void” of grip that appears in many fast tires when the limit of the central slick is exceeded.

Finally, the sidewalls incorporate more pronounced knobs that provide lateral traction in corners on loose terrain or during technical descents. They do not seek extreme grip like MTB tires, but enough support to maintain confidence when speed remains high.

The result is a tire that attempts to eliminate abrupt changes in behavior, something especially important in fast gravel where loss of grip tends to be more progressive but also harder to anticipate.

Unique compound and reinforced structure, an unusual decision

One of the most interesting points of the GravelKing ZX is the decision to maintain a single compound throughout the tread. Against the trend of using double or triple compounds, Panaracer bets on its ZSG Gravel formulation.

From a technical standpoint, this has clear implications. Consistency of behavior over time is prioritized over the point optimization of each zone. That is, the tire does not change its response with wear as sharply as in multi-compound configurations.

This compound is complemented by two relevant structural elements. On one hand, the TuffTex technology that reinforces the casing against cuts and punctures, which is critical in competitive gravel. On the other, the BeadLock system that improves bead stability, especially when working with low pressures.

This last point is key in terms of performance. At low pressures, traction and comfort are gained, but the risk of burping or unwanted tire movement also increases. This is where the bead design plays a decisive role.

As the brand explains, the ZX has not been based on a rapid development, and its design has gone through six mold iterations before reaching its final shape.

This process indicates that the adjustment of the balance between rolling, grip, and transition has been the main focus. It is not just about defining a tread pattern, but about fine-tuning how they interact under real load.

Moreover, the product positioning clearly targets competitive and long-distance gravel. Events like Unbound, The Traka, or the UCI Gravel World Series appear as natural scenarios for this type of tire. In all of them, the ability to maintain speed without losing control in unpredictable sections is more important than extreme performance on a single type of terrain.

Panaracer GravelKing ZX: prices, sizes, and weights

The GravelKing ZX comes with a range of sizes that covers almost the entire spectrum of modern gravel, from 35 mm to 55 mm in 700c.

This range allows it to be adapted to both configurations closer to all-road and setups with a focus on almost lightweight MTB. The first available versions focus on 45 and 50 mm, which already indicates where its main use is aimed.

In terms of weight, it is positioned at competitive figures for its category. For example, in 45 mm it starts at around 560 g in the standard version, dropping to 510 g in the lighter ZX R variant. This positions it as a fast tire within its segment, without excessive penalties for structural reinforcements.

The range is divided into three levels:

• ZX standard as a balanced option
• ZX+ with greater protection
• ZX R focused on performance and lower weight

Prices in Europe start at €59.99 for the basic version and go up to €74.99 for the higher versions, placing it in the mid-high range of the gravel market.

Within the GravelKing range, the ZX occupies a very specific space. It does not replace the more aggressive SK or the faster SS, but positions itself between both with a more modern approach.

If the SS prioritizes speed in stable conditions and the SK ensures traction on loose terrain, the ZX attempts to offer a continuous behavior between both extremes. It is, in essence, the answer to routes where the terrain changes constantly and does not allow for specialization.

The GravelKing ZX is not just a new model within a consolidated range. It represents a shift in how gravel tires are designed.