LeBron James' Unique Canyon Grizl CF: A Gravel Bike for Giants
Canyon has built LeBron James a gravel bike that barely fits inside the usual definitions of a production machine. It’s a Grizl CF in name, but the headline is impossible to miss: 32in wheels, a 3XL frame, and a complete re-engineering job to cope with one of the most powerful athletes on the planet.
This isn’t a case of simply scaling up a stock bike and hoping for the best. The project started in southern Germany, where Canyon’s gravel lead engineer, Wolfgang Kohl, and his team had to rip up their usual playbook.
“The geometry might land in the right place, but the loads don't scale the way the dimensions do. Everything needed to get re-engineered or the bike simply wouldn't function as a responsive system to the rider,” Kohl explains. For a 6ft 9in NBA star, “good enough” was never going to cut it.
A Giant Bike for a Giant Rider
The 3XL Grizl CF carries those 32in wheels inside a frame that uses a special carbon layup, tuned specifically to handle the forces James will put through it. The aim wasn’t just strength; it was to keep the bike feeling alive under a rider who can overpower most equipment.
Canyon also went deep into the details. The bike runs custom CNC‑machined thru-axles with wider Boost spacing to match the oversized wheels and the loads they generate. Even the seat clamp is bespoke. Every contact point, every junction, has been reconsidered for a rider who simply doesn’t fit the standard size chart.
James has felt that mismatch for years.
“On most bikes I've ridden, I was aware of the bike, where it didn't fit me, what I was working around,” he says. This time, the experience flipped. “This is the first one that I didn't have to think about. That's what I love most about riding. It's just you out there and everything else is gone.”
For a player used to having equipment tailored to the millimetre on the court, his gravel setup has finally caught up.
32in Wheels: Hype, Experiments, and a Quiet Arms Race
The sight of 32in wheels under LeBron will only add fuel to the ongoing debate around the size. Canyon, though, is keeping its cards close. The brand describes this Grizl as “one of a kind”, even if it is “fully functional”. No promises, no launch dates, no glossy campaign. Not yet.
That stance echoes what we’ve already seen from other big names. Scott rolled out 32in bikes as pure race weapons, not retail products. Robin Gemperle used one to win the 2026 Unbound XL, while Cameron Jones rode a 32in setup over the 200‑mile Unbound course. When the dust settled, Scott was clear: these were “pure prototypes” with no plan to hit the shop floor.
BMC followed a similar path. Its athletes raced a 32in prototype at the Andorran round of the XC World Cup in July 2025. Interest spiked, questions followed, and the answer was firm: no current plans to release a 32in bike.
So the pattern is emerging. The biggest brands are testing, racing, and quietly learning, but they’re not yet ready to throw open the doors. The ones actually committing to 32in for customers tend to be smaller, bespoke builders, happy to live at the edge of what’s possible.
Industry Momentum Is Building
The story doesn’t end with frames. Schwalbe has already nailed its colours to the mast. Back in January, the tyre giant said it is “fully convinced” by the 32in size and confirmed it will release 32in tyres next year. James’ Grizl already rolls on prototype 32in G‑One RX rubber, underlining that this isn’t some half-finished experiment.
Merida is pushing in the same direction. Stephan Seitz revealed in March that the company is actively developing both gravel and cross-country mountain bikes around 32in wheels. He went further, predicting that 32in will become the performance standard by the spring of next year.
If that timeline holds, LeBron’s bike looks less like a curiosity and more like an early, very high-profile glimpse of where the top end of the sport could be heading.
Built for the Tall, Ridden by the Tallest
For now, though, this Canyon remains a one-off. And James is exactly the kind of rider the industry has in mind when it talks about the benefits of 32in wheels. The general consensus is clear: the bigger the rider, the more the format makes sense.
Longer contact patch, smoother roll over rough ground, more stability at speed – all of it scales with height and power. On a standard bike, a 6ft 9in rider often sits awkwardly on top of the machine. On this one, the bike finally matches the body.
Canyon may insist this Grizl CF is unique, and Scott and BMC may still call their 32in projects “prototypes”, but the pieces are moving. Tyre support is coming. Major brands are testing behind the scenes. Riders are already winning big races on the new size.
Right now, LeBron James is simply enjoying the benefits. The real question is how long it will be before the rest of the gravel and XC world gets to find out what 32in feels like under their own wheels.
