Royal Assassin Dual Durometer Wheels
Royal Assassin Dual Durometer Wheels Designed using proven race technology, the Royal Assassin Dual Durometer wheel combines two engineered urethane compounds to deliver higher reb ound, improved grip, and long-term durability. It also stands out visually, making it just as appealing to skaters who value style as much as speed. Key Product Points Dual durometer urethane construction for increased speed and energy return Engineered core and outer layer allow multiple performance combinations High rebound design improves efficiency, grip, and control Corey urethane provides unmatched durability and grip Multi-stage manufacturing process with individual quality checks Distinctive dual-layer look that stands out on the floor Size: 63mm x 44mm / 70mm x 44mm Product Description Who This Wheel Is For The Royal Assassin Dual Durometer wheel is designed for skaters who want more from their setup. It is ideal for competitive speed skaters, high level rink racers, roller derby skaters and jam skaters who demand fast roll, predictable grip, and consistent performance under load. It also suits advanced recreational skaters who want premium equipment that feels different the moment it hits the floor. And to be completely honest, not everyone will buy this wheel purely for performance. Some skaters will choose it simply because it looks incredible. The visible dual layer construction gives the wheel a unique aesthetic that turns heads, even before you start skating. Why Dual Durometer Matters Traditional wheels rely on a single urethane compound, which forces a compromise between speed, grip, and durability. Dual durometer construction removes that limitation. By separating the wheel into two functional layers, each compound can be optimised for a specific role. In the current Royal Assassin Dual Durometer configuration, a softer inner layer increases rebound and grip, returning more energy to the skater and improving acceleration and efficiency. A harder outer layer protects the core and improves wear life. There is also a strong case for reverse construction. Using a harder inner layer can increase rolling speed and stability, while a softer outer layer can improve grip and feel on the surface. We will be testing a variety of combinations so make sure you follow us on Facebook to see how the different combinations stack up. We will continue experimenting with a wide range of urethane hardness combinations, core designs, and outer compounds. Dual durometer construction gives us the flexibility to tune wheels for different skating styles, surfaces, and preferences in ways a single compound wheel never could. Manufacturing Process and Quality Control The Royal Assassin Dual Durometer wheel is not produced like a standard wheel. The process is closer to making two wheels than one. Production begins with the inner urethane layer. This compound is mixed, degassed to remove air, and poured by hand before being baked at high temperature for 24 hours. Once cured, the wheel is demoulded, cleaned, and trimmed. Only then is the second urethane layer mixed, degassed, and poured. After curing, the wheel is demoulded again, cleaned, trimmed, grooved, quality checked, and printed. Each wheel goes through multiple inspection stages to ensure hardness consistency, bond integrity, and finish quality. This level of control is time-intensive, but it is essential for achieving consistent performance. Proven Race Technology Dual durometer wheels are not new or experimental. Elite inline speed skaters have used them for more than 20 years. Since their introduction at the highest level of competition, no world title has been won on a wheel without dual durometer construction. The reason is simple: they are faster and more efficient. The Royal Assassin Dual Durometer wheel applies the same proven concept to roller skating while enabling further development and refinement specific to rink, derby, jam, and speed skating environments. Performance on the Floor On the floor, the wheel feels fast yet controlled. The layered construction allows the wheel to maintain grip under load while rolling smoothly and consistently. Acceleration feels more responsive, cornering remains predictable, and the wheel maintains its character as it wears. Whether skating speed, roller derby, jam, or long sessions at the rink, skaters will notice improved efficiency and a smoother ride. Less energy is lost through deformation, which means more speed for the same effort. Corey Urethane At the heart of the Royal Assassin Dual Durometer wheel is Corey urethane. This is the primary reason the Royal Assassin is widely regarded as the world’s best roller skate wheel. Unlike mass produced wheels, the Royal Assassin uses a premium urethane formula developed by renowned urethane expert Scott Corey. This exotic urethane is engineered to deliver exceptional rebound, consistent grip, and outstanding durability. The result is a wheel that feels faster, more responsive, and more predictable from the first session to the last. The Royal Assassin uses hot cure urethane, a far more demanding process than the cold cure urethane used in most wheels on the market. Hot cure urethane requires extended baking at very high temperatures, often for many hours and up to a full day, to fully cure and stabilise the material. This controlled heat curing process improves the urethane’s mechanical properties, resulting in higher rebound, better resilience, and more consistent performance over time. The design of the Royal Assassin wheel is equally deliberate. The profile and lip shape have been refined using direct feedback from top level skaters, ensuring immediate confidence, smooth transitions, and reliable grip under load. To complete the package, the wheel features a unique double cut grooving pattern. This design virtually eliminates break in time, allowing the wheel to reach peak performance straight out of the box, without the need for extended wear in. A Wheel Built for Performance and Style The Royal Assassin Dual Durometer wheel exists because skaters want more than average equipment. It takes more time, more material, and more testing to produce, but the result is a wheel that delivers both performance and visual impact. Some skaters will buy it for the measurable gains. Others will buy it because it looks damn cool. Either way, it is a wheel that stands apart. Technical Specifications Size: 63mm x 44mm / 70mm x 44mm Wheel construction: Dual durometer urethane Inner compound options: Tuned hardness depending on configuration Outer compound options: Tuned hardness depending on configuration Manufacturing method: Multi stage pour with heat curing Finish: Grooved running surface Quality control: Individual inspection and hardness consistency checks Application: Roller speed skating, jam skating, and high performance rink skating Frequently Asked Questions What is the advantage of a dual durometer wheel compared to a single compound wheel? Dual durometer construction allows different parts of the wheel to perform different jobs. This makes it possible to improve speed, grip, and durability at the same time, rather than compromising one to improve another. Will different hardness combinations be available in the future? Yes. We actively test multiple inner and outer urethane hardness combinations, including reverse constructions. This allows us to fine tune wheels for different skating styles and surfaces. Are these wheels only for competitive skaters? No. While the performance benefits are real, many skaters choose these wheels for their unique look and premium feel. They suit anyone who wants something different and high quality under their skates. Embrace the Uniqueness: Handcrafted Bont Royal Assassin Wheels Our commitment to crafting high-performance wheels by hand means that each Bont Royal Assassin wheel is a unique creation, shaped by artistry and the nature of our premium urethane. While we strive for excellence, the handmade process and materials can result in subtle variations that add character and authenticity to your wheels. Here are a few natural occurrences you might expect: 1. Air Bubbles Our high-performance urethane may contain tiny air bubbles, a natural part of the manufacturing process. These are harmless and won't affect performance. We have specific criteria to ensure these bubbles are minimal: Skate surface: Up to 3 bubbles, each 3mm or smaller, not grouped together. Wheel Face and Lip: Up to 2 bubbles, each 2mm or smaller, not grouped together. Back of the wheel: Up to 2 bubbles, each 4mm or smaller, not grouped together. 2. Streaks The face of the wheel may exhibit subtle streaks, adding a unique visual touch. 3. Slight Hub Scratches Before pouring the urethane, the hub is prepared through sandblasting and priming. A clamp during this process can sometimes leave a tiny imperfection on the hub. 4. Grooves We hand-buff the grooves in each wheel, ensuring a faster break-in period. This personal touch means each wheel will be slightly different, showcasing the artistry of the final buff. These natural variations are not defects; they are a testament to the handcrafted nature of your Bont Royal Assassin wheels. We believe they add to the charm and individuality of each wheel, making them truly one-of-a-kind. The natural-colored urethane may yellow when exposed to sunlight. To maintain its original look, avoid direct sun exposure. The wheel’s lip may appear slightly more yellow than the rest due to the manufacturing process—this is normal. These high-performance wheels are not designed for drag-to-stop use. Flat spotting from excessive dragging or hub damage from incorrect bearing installation is not covered under warranty. Flat spotting is a characteristic of urethane under excessive friction and can occur on all roller skate wheels.