Eddy Merckx won 525 races as a professional, a record that makes him the undisputed GOAT and sets an intimidating bar for any bike bearing his name. The previous 525 never quite cleared it. For the new 525R, the brand has started afresh, pairing deep aero profiles and a narrow cockpit with more relaxed, progressive geometry to deliver speed that more riders can use. Aero for the masses, then?Long before Eddy Merckx was a brand, The Cannibal rode frames built by Ugo De Rosa and Ernesto Colnago, with his own name already on the tubes. The company that followed has traded heavily on that legacy, but rarely on innovation. The previous 525 was a case in point: competent, unremarkable and lost in a crowd of race bikes. What you need to know about the Eddy Merckx 525R Highs progressive geometry makes an aero position easier to sustain combines aero race bike and endurance bike qualities durable CeramicSpeed SLT headset up to 34 mm tyre clearance Lows rather heavy overall, particularly the wheels at nearly 1,600 g no power meter as standard limited agility compared with some aero race bikes Key Facts 7.55 kg in size M progressive geometry with a 73 head tube angle and 75 seat tube angle in size M 55 mm deep DT Swiss ARC 1600 wheels 30 mm Continental GP 5000 S TR tyres 4ZA Nimbus Pro cockpit with 360 mm width at the hoods and 400 mm in the drops zero-setback seatpost only UDH derailleur hanger CeramicSpeed SLT headset fitted as standard lifetime warranty on the frame Until 2026, that is. Were at the legendary Rund um Kln, paying at least as much attention to the bikes on the team cars as to the race itself, when a black prototype on the Team Flanders Baloise car draws our eye. Monstrous head tube, deep tube profiles: has someone simply peeled the Ridley logos off a Noah? Not quite. The secret is soon out. This is the new Eddy Merckx 525R, a complete redesign rather than an update, and according to the brand it has the most progressive geometry on the market.The new Eddy Merckx 525R in detail: All in on aeroVisually, the 525R has very little in common with its predecessor. Massive aero profiles replace conventional tube shapes, with the broad downtube and head tube particularly striking. The resemblance to the Ridley Noah Fast is no coincidence. Both bikes emerged from Belgian Cycling Factorys in-house wind tunnel.The forks asymmetric profile is designed to improve aerodynamics.The asymmetric fork is designed to optimise airflow while providing clearance for tires up to 34 mm wide. At 7.55 kg in size M on our scales, however, the 525R is no climbing specialist. It does feature a UDH derailleur hanger and carefully chosen components, including the narrow Nimbus cockpit.The Nimbus cockpit measures just 36 cm at the hoods. And yes, our tester has already been told off for his lever angle, then again for his bar tape wrapping!Setback seatposts arent even an option.The CeramicSpeed SLT headset shows that Eddy Merckxs designers have paid attention to the details most riders will never see. Fitted as standard, the system comes with a lifetime warranty and is virtually maintenance-free according to the manufacturer. Thats a compelling feature on a bike with internal cable routing. After all, nobody wants to dismantle half the cockpit just to replace a worn headset.Eddy Merckx also have an extensive configurator, which lets you choose not just between different groupsets, but also wheels and paint finishes.The 525R comes without a power meter as standard. Normal in Eddys day, but hardly up to date now.The ARC 1600 wheels are aerodynamic, but lightweight they are not.The Eddy Merckx 525Rs spec: Deep wheels and narrow barsAt 6,999, our test bike is the most affordable 525R in the range. Shifting is taken care of by a Shimano ULTEGRA Di2 drivetrain, with 52/36 t chainrings and an 1130 t cassette, but sadly no power meter. The 170 mm cranks on our test bike in size M (56 cm) reflect the industrys steady move towards shorter crank arms. Given the geometry, though, we would have preferred 165 mm cranks to open up the hip angle even further.The 525Rs uncompromising aero concept extends to its wheels: 55 mm deep DT Swiss ARC 1600s with 30 mm Continental GP 5000 S TR tires. That said, at almost 7,000, the higher-spec ARC 1400 wheelset with aero hubs would have felt more appropriate.The 4ZA Nimbus Pro cockpit combines a width of 360 mm at the hoods with 400 mm in the drops and a 110 mm stem. The seatpost is only available with zero setback. The most conspicuous detail is whats missing: a power meter! If youre prepared to dig deeper into your pockets, the 525R is also available with a DURA-ACE groupset for 10,500 or Campagnolo Super Record for around 13,000. You can customise the frame and fork colours, too. A welcome bonus: Eddy Merckx offer a lifetime warranty on the frame.The geometry of the Eddy Merckx 525R: The anti-MerckxOne glance at the 525Rs geometry chart and you might wonder whether it should be called the anti-Merckx. Photos of The Cannibal show him with his saddle well back and his bars low. Most brands today are still busy shaving watts off the frame, but Eddy Merckx has taken a different route, putting the riders position first.SizeXSSMLTop tube length525 mm545 mm565 mm585 mmSeat tube length480 mm495 mm515 mm540 mmHead tube length125 mm140 mm160 mm185 mmHead tube angle73737373Seat tube angle74.5757576Chainstay length407 mm407 mm407 mm407 mmBottom bracket drop75 mm75 mm75 mm75 mmWheelbase964 mm990 mm1,011 mm1,043 mmReach377 mm398 mm413 mm437 mmStack535 mm550 mm569 mm593 mmThe 525Rs answer is progressive geometry. The rider sits much further forwards over the bottom bracket, opening up the hip angle. In theory, that makes it easier to lower your upper body into an aerodynamic position, but it has drawbacks for those who prefer to sit further back on the bike. Riders who like to push a big gear at a low cadence, in particular, may struggle with it.Unleash the beast!The slightly more relaxed geometry lets us ride the 525R without spacers.The recipe: a longer frame, a taller front end and steeper angles. The geometry chart lists a 73 head tube angle and a 75 seat tube angle, whereas most race bikes settle somewhere between 72 and 73 for both. Pushing the rider further forwards is central to the progressive concept, and a lower bottom bracket supports the same aim. On paper, it all looks fiercely aggressive. On the road, Eddy Merckx claims, it should feel considerably more relaxed, especially in an aero tuck.So the 525R takes a fundamentally different approach. It blends aero and endurance influences with progressive geometry, and the result is something without an obvious precedent. In theory it makes sense: a taller front end for a more sustainable aero position is the core idea of progressive geometry. But does it work in practice?The Eddy Merckx 525R on test: Aero for all?We headed to the northern Black Forest to find out whether the theory holds up on the road. Long valleys, steep climbs and fast descents were all on the agenda.The Lion of Flanders!No Flandrien test is complete without a few cobbles.The 525Rs biggest weakness? Weight. At 7.55 kg in size M, its no heavyweight, but nobody would call it light either. The wheels are the main culprit: DT Swiss claims 1,585 g for the set, including rim tape and valves, and you feel every gram when accelerating from low speed. Sprinting is a different story. Once the bike is up to speed, its aerodynamics take over.Like the Ridley Falcn RS we tested recently, the 525R lets its progressive geometry dictate the handling. Riders accustomed to a forward saddle, a long stem or similarly unorthodox adjustments will settle in immediately, since the frame delivers that position from the outset. Riders who favour a classic, rearward position will find the 525R unfamiliar. Its long reach, huge wheelbase and steep angles feel distinctly different from a conventional race bike. Perched further forwards over the bottom bracket, you gain a more open hip angle, and with it a fundamentally different pedal stroke. The force goes down through the pedals from above, not from behind, so the quadriceps take on more of the work and the glutes and hamstrings less. Anyone used to a setback seatpost should expect their legs to protest after the first ride. One thing that doesnt change is the reach to the bars: the longer front end is cancelled out by the forward saddle position. On flat roads, the position wins most riders over quickly; on climbs, the altered pedalling takes longer to accept. We felt at home almost immediately, though our usual setup was already close.The long wheelbase, above all, is a mixed blessing: it brings outstanding stability and confidence at speed, but costs the bike agility. The 525R is always easy to control, but it lacks the liveliness and razor-sharp edge of some of its aero rivals. In return, it remains composed and predictable even when things get hectic. Thats an important quality on a bike that puts so much weight over the front wheel. Another highlight is the 30 mm Continental GP 5000 S TR tires. They offer excellent grip, once again confirming their status as some of our all-time favourites.The 525R is fast. Seriously fast. Yet its full potential only emerges once a rider is on board. The aero profiles and 55 mm deep DT Swiss wheels keep drag low and deliver a noticeable sailing effect, but the real trump card is the riding position. A low front end may look aerodynamic, but what use is it if your back starts aching after 10 minutes? Theres a reason spacers under the extensions are increasingly common, even in time trials: a position needs to be fast, but above all it needs to be sustainable. Many riders also know the feeling of losing power the moment they tuck down. The taller front end and more open hip angle aim to minimise exactly that, mirroring a trend among time triallists, whose positions are moving ever further forwards and upwards. In practice, it works, at least for us: we lose less power when we bend our elbows. How much difference it makes, however, depends heavily on the individual.Fast enough to get you a ticket!The 525R isnt a fan of 30 km/h zones.This is exactly where the 525R comes in. The taller stack and forward saddle position create a long, high riding position with an open hip angle. With the hoods just 36 cm apart, its easy to bend your elbows. The result is an aero position thats surprisingly easy to hold, without folding yourself in half. Road time trials ridden without time trial bikes are known as Merckx-style time trials. And thats precisely where we see the 525Rs greatest strength.The aero position is more comfortable, but you can still make yourself suffer especially on the climbs.When it comes to compliance, the 525R remains a typical aero bike. The broad seatpost offers little flex, and the frame only takes the edge off bumps to a limited extent. Once again, the 525R finds its comfort in ergonomics. Its slightly more relaxed geometry already makes it more accessible than many uncompromising aero racers. Combined with the more open hip angle, it could even allow riders with limited flexibility to achieve a genuinely aerodynamic position on an aero bike for the first time. Tuning tip: Fit a power meter so you can see how many watts you save with the new position.Who is the Eddy Merckx 525R the right bike for?The 525R is particularly appealing if you want to ride fast without putting up with an extremely low, uncomfortable position. The progressive yet comparatively relaxed geometry fills an interesting gap between uncompromising aero race bikes and endurance bikes. If you prefer traditional geometry or sit further back on the bike, the 525R wont be for you. But if you want to ride in an aero position and havent been able to make it work so far, this bike could be the answer.Helmet Giro Eclipse Pro Spherical | Glasses Oakley VeloKato | Jersey ASSOS EQUIPE THERMOBOOSTER P1 | Shorts Q36.5 Dottore Pro | Shoes Specialized S-Works Torch | Socks FALKE BC ImpulseConclusions about the Eddy Merckx 525RFor the right rider, the Eddy Merckx 525R could mark a turning point for aero bikes. Instead of simply making the frame faster, it puts the rider at the centre of the equation, using progressive geometry to create an aero position you can hold for longer and bridging the gap between race bike and endurance machine. On fast, flat roads, it impresses with its efficiency and stability. Its weight and limited agility take some of the shine off, but for riders who struggle to stay low, the 525R makes aero speed more accessible than almost any race bike weve tested.TopsProgressive geometry makes an aero position easier to sustainCombines aero racer and endurance bike qualitiesDurable CeramicSpeed SLT headsetFlopsRather heavy overall, and particularly the wheels at nearly 1,600 gNo power meter as standardFor more information, visit eddymerckx.com.Der Beitrag Eddy Merckx 525R 2026 Review: Cannibal Speed for the Rest of Us erschien zuerst auf GRAN FONDO Cycling Magazine.