Bont GT4 Inline Speed Skate Boot
The GT4 is a carbon composite inline speed skate boot designed for developing racers and committed fitness skaters who want pro-level construction without the premium price. Built using Bont’s one-piece manufacturing and refined lasts, it delivers a snug, supportive fit, efficient power transfer, and dependable durability for training, marathons, and club racing. Key features include a carbon composite base, anti-stretch reinforcement, and Bont’s highly moldable epoxy resin system for custom comfort.
Key Product Points
- Carbon composite base with epoxy resin that can be heat molded for a personalized fit and stable power transfer.
- One-piece manufacturing based on Bont’s proven lasts for a low, secure fit and consistent control at speed.
- Anti-stretch reinforcement is integrated into the boot structure to help maintain shape over time.
- Microfiber outer and soft memory foam padding for added comfort during extended sessions.
- Vegan-friendly construction with sizes from kids through adults so that teams can kit up across age groups.
Product Description
Built for speed, shaped by experience
GT4 starts with Bont’s last, refined over decades by founder and designer Mr. Inze Bont. That foundation creates the close, performance fit skaters expect from an inline speed skate, so your foot sits low and locked in, ready to push through corners and accelerate cleanly. Bont builds the shell using one-piece manufacturing, a technique usually reserved for higher-priced custom boots, to create a stiff, consistent platform that does not rely on multiple glued sections. The result is a boot that feels planted, transmits energy efficiently, and stays true to its shape season after season.
Carbon composite base with custom comfort
Under the microfiber skin is a carbon composite base laminated with Bont’s epoxy thermoset resin. This resin system allows targeted heat molding so you can fine-tune hot spots and pressure points for a glove-like feel. If you have ever struggled with numb toes or ankle rub, the GT4 gives you that extra adjustability to dial it in. For oven and spot molding guidance, follow Bont’s heat molding instructions for composite boots.
A quick note on molding terminology. GT4 does not include additional thermoplastic sheets inside the boot, a feature found on some Bont models to expand the molding range. Many skaters do not require that level of reshaping, and the GT4’s resin-based heat molding provides ample fine-tuning for most feet. This keeps weight low and value high while preserving the secure feel that speed skaters prefer.
Fit that lasts
Stretch can quietly ruin a boot’s performance over time. Bont weaves an anti-stretch material into the boot’s structure, stitch-locking it between the skin and liner. This reinforcement helps the upper resist creep so the fit you love on day one stays consistent through hundreds of training hours. Fewer mid-season surprises, more predictable edge control.
Practical performance for real-world training
GT4 is built to be skated hard. The carbon composite construction strikes a balance between stiffness for strong pushes and a touch of forgiveness for imperfect roads. The 12 mm pitch suits modern racing technique, promoting stable knee tracking and efficient under-body weight transfer. Vents at the tongue help manage heat on summer sessions, and the micro-adjust buckle and laces let you set and forget before you roll out.
Mounting and compatibility
The boot uses standard 2-point mounting across common spacings, so it integrates easily with Bont’s 2PF racing frames as well as many third-party options. That means you can start with your current frame and wheels, then upgrade components over time without changing your boot fit. For riders building a full package, Bont’s 6061 frames are a reliable match with proven durability for training and race days alike.
Who it is for
- Skaters moving up from fitness skates to a real inline speed skate boot
- Club racers and marathon skaters who want a dependable, value-packed racing boot
- Parents and coaches equipping juniors, thanks to the broad size range and vegan-friendly materials
- Experienced skaters seeking a training boot that is comfortable, supportive, and easy to maintain
Why skaters choose GT4
- Secure low fit from Bont’s long-proven last
- Moldable carbon composite base to fine-tune comfort
- Anti-stretch reinforcement for shape retention
- Materials and construction chosen for performance and longevity
- Clean, minimalist styling that looks fast without shouting
Ready to roll
If you want a true inline speed skate boot with thoughtful construction, an adjustable fit, and proven durability, GT4 delivers. Choose your frame and wheel setup, mount, heat mold as needed, and go chase your next personal best.
Technical Specifications
- Base material, carbon composite with epoxy thermoset resin, heat moldable
- Outer material, microfiber
- Liner, suede style
- Padding, soft memory foam
- Pitch, 12 mm
- Venting, tongue
- Innersole, EVA thermo moldable
- Mounting, 2 point, typical spacings 150 mm to 195 mm
- Sizes, kids 11 to adult 12.5
- Vegan, yes
- Recommended use, inline speed skating, club racing, marathon training
- Brand notes, one-piece manufacturing on a refined Bont last, anti-stretch reinforcement integrated into the structure
All technical data sourced from Bont GT4 product information and support resources.
Frequently Asked Questions
Is the GT4 boot heat moldable?
Yes. The carbon composite base uses Bont’s epoxy thermoset resin, which allows heat molding for fit refinement. Follow Bont’s heat molding guide for composite boots to adjust specific areas safely.
How does GT4 differ from the Jet boot?
GT4 does not include additional thermoplastic sheets inside the boot, which some riders use for more extensive reshaping in an oven. Many skaters do not need that extra range, and GT4’s resin-based molding covers typical hot spot adjustments while keeping the package lighter and cost-effective.
What frames and wheels work with the GT4?
Most 2 point racing frame within standard mount spacings, 195 mm, will fit. Pair it with Bont’s 2PF 6061 frames and Elemental training wheels for a reliable all-around setup, or mount your preferred racing frame and speed skate wheels based on surface and distance.
Carbon Fiber
Carbon fiber (or carbon fibre, depending on US or UK spelling) is an advanced composite material known for its exceptional strength-to-weight ratio. It is as strong as steel while weighing only a fraction as much.
Carbon fiber is made from bonded carbon atoms aligned along the length of each fiber. Thousands of these fibers are twisted into a yarn, which is then woven into fabric. This fabric forms the carbon sheets used in high-performance products.
Bont has been producing carbon-based boots since 1989. We source our carbon exclusively from Toray in Japan, the world leader in carbon fiber manufacturing.
Types of Carbon We Use
3K PLAIN
A tightly woven carbon commonly used in the aircraft industry and throughout Bont boots. Strong, reliable, and ideal for structural applications.
UNIDIRECTIONAL
Extremely stiff, lightweight carbon with fibers running in a single direction. This lets us place the carbon exactly where strength and support are needed. Used in our highest-performance boots, such as the Vaypor.
12K PLAIN
A larger weave that is more economical but not as strong as 3K. It reduces cost while maintaining adequate performance in less demanding applications.
INDUSTRY MISREPRESENTATION
Modern composites can be confusing, and not every product marketed as “carbon” contains true carbon fiber construction. Here are common examples of misleading terminology in the industry:
Single-Layer Carbon
Some boots have a plastic, nylon or fiberglass base covered with only one cosmetic layer of carbon. Although they can legally say “carbon base,” the structure underneath is not full carbon.
Unidirectional Carbon (Misused)
Some brands add carbon particles into plastic and call it “unidirectional carbon.” True UD carbon refers to continuous fibers all running in the same direction, not carbon-filled plastic.
Silver Fiberglass
A plastic base with carbon particles is often wrapped with silver fiberglass, then marketed as “carbon fiber.” Real carbon fiber fabric is always black.
100% Composite
A vague term that can mean almost anything. In most cases, it refers to a nylon–fiberglass composite, not a full carbon construction.
Monocoque (Misused)
A true monocoque boot has carbon laminated directly onto the liner, forming a one-piece shell. Some brands use the term incorrectly for shells with an integrated heel cup.
In Summary
Carbon terminology can be misused, so it helps to understand what you are buying. Bont uses genuine carbon fiber from Toray and builds boots with transparent, proven construction methods. Knowing the differences ensures you get the performance, strength, and value you expect from a true carbon boot.
Manufacturing Process
Bont is one of the few skate brands that still handcrafts boots using an inside-out manufacturing method. This approach is far more skill-intensive and time-consuming than mainstream production, but it allows us to create boots with the performance, strength and responsiveness skaters expect. While it increases production costs, it delivers a lighter and more precise final product.
We continually refine our processes to maintain the highest quality. For example, traditional vacuum curing for carbon has been replaced with pressure wrapping, which applies four atmospheres of pressure instead of one. This produces a more consistent and durable carbon layup.
Inze Bont’s engineering innovations have helped optimize our production line so we can build handmade monocoque boots efficiently without compromising craftsmanship.
Our manufacturing methods reflect our performance philosophy: lighter, stronger and faster.
For more detail on individual components of our construction, explore the technical dropdowns on this page, including Last Design, Footbed, Liner, Anti-Stretch, Carbon Fiber, Upper and more.