Canyon GrailvsRidley Astr
Can an aero-optimized gravel racer still be relevant if it caps tire clearance at 42mm? This tension defines the choice between the established Canyon Grail and the cavernous Ridley Astr, a bike that claims you shouldn't have to choose between wind-cheating tube shapes and 52mm rubber.

Overview
Both Canyon and Ridley have essentially taken their flagship road racing platforms—the Ultimate and the Falcon RS—and bulked them up for the dirt. The Grail Gen 2 moved away from the polarizing 'Hover' bar toward a more conventional, albeit stiff, integrated cockpit that emphasizes high-speed stability. It positions itself as the high-value, tech-integrated speedster for riders who want built-in tools and a frame bag that actually makes the bike faster in the wind tunnel. Ridley’s Astr takes a more aggressive stance on where the industry is heading by providing massive tire clearance that the Grail simply cannot match. While the Grail struggles to clear anything larger than a 42mm tire, the Astr RS handles 52mm treads in a 1x setup or 47mm with a front derailleur. This makes the Ridley a significantly more versatile weapon for the increasingly chunky courses seen in events like Unbound, whereas the Canyon remains a precision instrument for smoother, 'champagne' gravel where speed is found in narrow, fast-rolling tires.
Ride and handling
Riding the Grail is an exercise in high-speed composure. Reviewers describe the handling as 'calm' and 'self-correcting,' a result of the lengthened 1,057mm wheelbase (size M) and a slacker 71.5-degree head tube angle. It doesn't have the twitchy, reactive feel of a cyclocross bike; instead, it tracks straight with a sense of purpose that saves mental energy during hour six of a race. However, the front end is undeniably firm. The one-piece carbon cockpit transmits significant trail chatter, making it a bike that relies heavily on tire pressure to maintain comfort. In contrast, the Ridley Astr feels like a locomotive that occasionally struggles with tight corners. It is 'rock solid in a straight line' and remarkably planted, but the narrow aero bars and heavy steering can make it feel 'ponderous' when navigating technical singletrack. The frame is exceptionally stiff, even by race standards. While the massive 47mm or 50mm tires help soak up the hits, the chassis itself is uncompromisingly rigid. This directness is brilliant for out-of-the-saddle sprints, but it lacks the 'buttery smooth' compliance found in more endurance-oriented rivals. Handling on the Grail feels more refined across a variety of speeds, whereas the Astr seems specialized for the blunt-force trauma of high-speed fire roads. The Canyon's geometry places the rider in a more centered, balanced position that aids technical climbing. The Ridley stretches the rider out into a compact aero tuck that feels faster on the tarmac but requires more muscle to navigate through rocky, off-camber sections. Both bikes demand a pilot who is comfortable with a race-stiff ride, but the Canyon's steering is arguably more intuitive for the average rider.
Specifications
Canyon continues to dominate the value conversation by speccing Zipp 303 Firecrest wheels on the mid-tier Grail CF SLX 8 AXS, a build that undercuts almost everything in its class. The Grail's LOAD system—integrated downtube storage for a pump, multi-tool, and tube—is a masterstroke of functional design that Ridley hasn't quite matched. While Ridley offers an optional aero frame bag developed with Apidura, it's an add-on rather than a built-in feature, and the Astr lacks any internal frame storage. The Astr counters with unique drivetrain options, including the Classified Powershift system. This allows for 2x gear range on a 1x setup by using a wireless shifting rear hub, a setup favored by racers who want small gear steps without the aerodynamic penalty of a front derailleur. Ridley’s range-topping builds feature the newest SRAM Red XPLR 13-speed groupsets, which pair exceptionally well with the bike's massive tire clearance. However, the lack of mudguard mounts on the Astr is a surprising omission for a Belgian brand, whereas the Grail offers a proprietary quick-release fender kit. Cockpit choices on both bikes are integrated and proprietary, which limits fit adjustment. Canyon’s 'Gear Groove' on the SLX and CFR levels is a clever interface for aero extensions and computer mounts, but it forces you into the Canyon ecosystem. Ridley’s bars are similarly specialized, prioritizing a narrow hood position for aerodynamics. If you sit outside the standard fit bell curve, the Grail’s use of a standard 1 1/8” steerer makes it slightly easier to swap to a third-party bar and stem compared to the more complicated internal routing on many high-end Ridley builds.
| Grail | Astr | |
|---|---|---|
| FRAMESET | ||
| Frame | Canyon Grail CF (carbon gravel race frame, 12x142mm, 42mm tire clearance) | ASTR HM carbon frame, BB86, TA 12x142 |
| Fork | Canyon FK0117 CF Disc (carbon, 12x100mm, 42mm tire clearance) | ASTR carbon fork, TA 12x100, integrated forkcrown diffuser, 50mm rake, D-Shape steerer |
| Rear shock | — | — |
| GROUPSET | ||
| Shift levers | Shimano GRX RX610 shift/brake levers | Shimano GRX600, 12-speed |
| Front derailleur | Shimano GRX FD-RX820 | — |
| Rear derailleur | Shimano GRX RD-RX820, 12-speed | Shimano GRX 800, 12-speed, medium cage (max 45T) |
| Cassette | Shimano 105 R7101, 12-speed, 11-34T | Shimano SLX M7100, 12-speed, 10-45T |
| Chain | Shimano Deore M6100 | Shimano 12-speed chain (GRX 1x12 compatible) |
| Crankset | Shimano GRX RX600 2x (46/30T, 170mm) | Shimano GRX600, 172.5mm, 40T (1x) |
| Bottom bracket | Shimano BB-RS500 Pressfit (PF86) | BB86 (PressFit 86.5) |
| Front brake | Shimano GRX RX610 hydraulic disc (2-piston) | Shimano GRX600 hydraulic disc brake, flat mount |
| Rear brake | Shimano GRX RX610 hydraulic disc (2-piston) | Shimano GRX600 hydraulic disc brake, flat mount |
| WHEELSET | ||
| Front wheel | DT Swiss Gravel LN (Aluminium, 25mm rim height, 24mm internal, Center Lock, 12x100) | Shimano RX180 MS12 TLR DB Black (front) |
| Rear wheel | DT Swiss Gravel LN (Aluminium, 25mm rim height, 24mm internal, Center Lock, 12x142, Shimano freehub) | Shimano RX180 MS12 TLR DB Black (rear) |
| Front tire | Schwalbe G-One R Performance, 40mm | Vittoria Terreno T50, 700x50c, TLR, Black-Black |
| Rear tire | Schwalbe G-One R Performance, 40mm | Vittoria Terreno T50, 700x50c, TLR, Black-Black |
| COCKPIT | ||
| Stem | Canyon Cockpit CP0045 (one-piece integrated carbon cockpit) | Deda Super Box, 100mm, Polish On Black |
| Handlebars | Canyon Cockpit CP0045 (16° flare at drops, 5° backsweep on tops) | Deda Superzero Alloy Gravel, 420mm (c-c at hoods) / 50mm (c-c at drops), 16° flare, 120mm drop, 75mm reach |
| Saddle | Fizik Vento Argo X5, 140mm | Selle Italia Model X, Black |
| Seatpost | Canyon SP0096-01 carbon seatpost, 10mm setback | 4ZA Cirrus, 27.2mm, 400mm, zero offset, Black |
| Grips/Tape | — | — |
Geometry and fit comparison
The Grail’s geometry is long and stable, featuring a reach of 411mm and a stack of 591mm for a size Medium. This results in an aggressive but manageable position that balances aero gains with the stability needed for rough terrain. A 71.5-degree head tube angle across most sizes ensures the handling doesn't get too twitchy, while the 425mm chainstays keep the rear end snappy enough for accelerations. It is a geometry that favors predictable tracking over sharp, quick direction changes. Ridley's Astr leans into the modern 'long and low' philosophy but emphasizes tire volume as a geometry component. Because it can clear 52mm tires, the bottom bracket height and overall stance of the bike feel more substantial. The narrow bars (as narrow as 38cm on some builds) effectively stretch the reach further than the numbers suggest. It is a setup designed for the rider who stays in a tucked position for hours on end, rather than someone looking for an upright, leisurely adventure fit. Fit customization is a weak point for both. Canyon only offers a single 20mm offset seatpost, and Ridley’s D-shaped post on the RS models is similarly restrictive. The Grail is the better choice for riders who struggle with toe overlap, as Canyon has aggressively pushed the front wheel out to eliminate this issue even on smaller sizes. If you have a particularly long torso and short legs, the Grail’s long reach might be a perfect match, whereas the Astr’s stiff, race-oriented stack height will suit those with high flexibility.
| FIT GEO | Grail | Astr | |
|---|---|---|---|
| Stack | 655 | 595 | -60 |
| Reach | 454 | 419 | -35 |
| Top tube | 648 | 590 | -58 |
| Headtube length | 230 | 175 | -55 |
| Standover height | 901 | 890 | -11 |
| Seat tube length | 600 | 550 | -50 |
| HANDLING | Grail | Astr | |
|---|---|---|---|
| Headtube angle | 71.8 | 71.5 | -0.3 |
| Seat tube angle | 73.5 | 74 | +0.5 |
| BB height | — | — | — |
| BB drop | 75 | 75 | 0 |
| Trail | — | — | — |
| Offset | — | — | — |
| Front center | — | — | — |
| Wheelbase | 1118 | 1064 | -54 |
| Chainstay length | 425 | 425 | 0 |
Who each one is for
Canyon Grail
The Grail is for the racer who competes on fast, hard-packed courses where 40mm tires are the sweet spot and aero efficiency is the primary metric for success. If you value a clean, integrated aesthetic and want your repair kit hidden inside the frame rather than strapped to it, the Grail’s clever engineering is hard to beat. It's the right choice for the rider who wants a 'road bike for the dirt' that remains stable and predictable when the fatigue of a 100-mile race sets in.
Ridley Astr
The Astr is for the rider who wants to run mountain-bike-adjacent tires without sacrificing the look and feel of a WorldTour aero bike. It’s built for the brutal reality of modern gravel racing where courses are getting rougher and 42mm tires are no longer enough. If you frequently find yourself under-biked on chunky descents but still want to rip past your friends on the flat paved sectors, the Ridley’s massive clearance and stiff power transfer are the solution.


