Cube just deleted its entire trail range and rebuilt it as a single bike. The ONE22, the ONE44, and the ONE55, three separate frames that used to split Cube’s trail lineup by travel, are gone for 2027. In their place sits one platform: the new Cube Stereo, with 150mm up front, 145mm out back, and a geometry sheet that has to cover everything those three bikes used to cover on its own. That consolidation is the real story here, and the Cube Stereo 2027 geometry is where you can see whether the gamble pays off.
The short version is that Cube picked a genuinely modern trail number and committed to it across four sizes. A 64.2 to 64.8 degree head angle, a fixed 439mm chainstay, and reach that climbs from 430mm to 505mm. Nothing on the chart is extreme. That is the point.
One platform instead of three
For years Cube ran its trail bikes as a travel ladder. The ONE22 was the short-travel quick one, the ONE44 the all-rounder, the ONE55 the near-enduro end of the range. Each had its own frame, its own geometry, and its own reason to exist. According to Enduro MTB’s breakdown of Cube’s 2027 range, all three collapse into one 150/145mm Stereo for 2027, and the gravity and enduro duties move up to the high-pivot Cube Fritzz and the Two15 downhill bike.
The frame itself is new from the ground up. It runs a four-bar Horst Link with the shock mounted horizontally under the top tube, a threaded bottom bracket with ISCG05 tabs, down-tube storage, and a straight seat tube that clears a long dropper. Cube offers it in two constructions: the full-carbon C:62 and the HPC, which pairs a carbon front triangle with an alloy rear end.
What makes the single-platform move interesting is that a 145mm trail bike now has to be the quick bike and the burly bike at once. The way Cube squares that circle is almost entirely through geometry rather than travel, which is why the chart deserves a careful read.
The geometry, size by size
Here is the Cube Stereo 2027 in its slacker headset setting, the numbers Cube and Velomotion both publish. All sizes run 29in wheels, with 27.5in reserved for the smallest XS option.
| Size | Reach | Stack | Head angle | Eff. seat angle | Chainstay | Wheelbase | BB drop | Head tube |
|---|---|---|---|---|---|---|---|---|
| S | 430mm | 619mm | 64.2° | 76.7° | 439mm | 1198mm | 36mm | 100mm |
| M | 455mm | 625mm | 64.2° | 77.6° | 439mm | 1225mm | 36mm | 106mm |
| L | 480mm | 634mm | 64.2° | 77.5° | 439mm | 1255mm | 36mm | 116mm |
| XL | 505mm | 652mm | 64.2° | 77.3° | 439mm | 1288mm | 36mm | 136mm |
The reach steps are clean: 25mm between each size, 430 to 505. Stack climbs sensibly too, with a useful 18mm jump from L to XL that keeps the biggest frame from feeling like a stretched-out medium. Seat angles sit in the high-76 to high-77 range, steep enough to put you over the pedals on a climb without being so aggressive that the saddle feels shoved forward on the flats.
A 64.2 degree head angle on a 145mm bike is worth pausing on. That is the number our own look at where trail geometry is heading pegged as the new mid-travel average, and it is roughly a degree slacker than the trail bikes of three or four years ago. Cube has not chased anything radical. As BikeRadar argued in its piece on peak mountain bike geometry, several brands are now nudging back toward slightly steeper angles and higher bottom brackets rather than pushing further, and the Stereo reads like a bike built with that plateau in mind.
Why the chainstays don’t change
The one figure that does not move is the chainstay: 439mm on every size, S through XL. That puts Cube on one side of a debate this site keeps circling back to.
Over the past few months the industry has leaned hard into size-specific rear ends. The Yeti MT grows its chainstays 16mm across the size run, and the Whyte Sythe spreads 31mm from its smallest frame to its largest, all in the name of keeping front-to-rear balance constant as the front end gets longer. Cube, interestingly, went the other way on both its 2027 trail platform and its new Fritzz enduro bike, which also holds a single chainstay length across the range.
The trade-off is measurable. On the S, that 439mm rear end is 36.6 percent of the 1198mm wheelbase. On the XL, the same 439mm is only 34.1 percent of a 1288mm wheelbase. In plain terms, the bigger you go, the more the bike’s weight shifts forward of the rear axle, and the harder a tall rider has to work to keep the back wheel planted in steep corners. It is not a dealbreaker, plenty of excellent bikes do this, but it is the honest cost of a fixed chainstay, and if you are deciding between the Stereo and a size-specific rival it belongs in the comparison. If any of this is new, our guide to reading a geometry chart walks through why rear-centre proportion matters more than the raw number.
The adjustable headset, and what it actually moves
Cube gives the Stereo an angle-adjust headset rather than a flip chip, and the two positions do less than the marketing suggests. In the steeper setting the head angle firms up to 64.4 degrees on the S and 64.8 on M through XL, reach shortens by 2mm, stack rises by 2mm, and the bottom bracket drop tightens from 36mm to 34mm.
That is a modest adjustment. Half a degree at the head tube and a couple of millimetres of reach will not turn a trail bike into a downcountry whippet or an enduro sled. What it will do is let you fine-tune the bike’s eagerness: the steep setting quickens the steering and lifts the BB a touch for pedal clearance on technical climbs, while the slack setting calms things down for faster, rougher descents. Treat it as a tuning dial, not a mode switch.
Where the tall rider lands
At 6 foot 4 I spend most of a geometry chart’s life looking at the XL column, and the Stereo’s reads well on the two numbers that usually get skimped. A 505mm reach and a 652mm stack are genuinely proportional, not a medium with a longer front triangle bolted on. The 136mm head tube does a lot of that work, holding the bars up where a tall rider wants them without a tower of spacers.
The caveat is the one already covered: that 439mm chainstay. On the XL it is the shortest rear-centre-to-wheelbase ratio in the range, so expect to ride a little more deliberately over the back of the bike to keep the rear tyre hooked up in steep, slow corners. A longer stem or a bar roll forward will not fix it, that is a weight-distribution question, not a cockpit one. For most tall trail riders it will be a non-issue on flowing terrain and a conscious input on the steeps.
Builds and pricing
Cube’s value reputation holds up here. Per the full 2027 lineup detail, the range runs from the HPC Race at roughly 2,000 euros up to the flagship C:62 SLT at 5,499 euros. That top bike weighs a claimed 13.6kg and comes with a Fox 36 Factory fork, a Fox Float X Factory shock, Shimano’s electronic XTR Di2 M9250 drivetrain, and a Fox Transfer dropper. For a full-carbon, electronically shifted trail bike, that is a sharp number against the comparable builds from the bigger-name brands.
The spread also means the single-platform strategy works in the buyer’s favour. Because every Stereo shares one frame and one geometry, the cheapest HPC and the priciest C:62 ride the same chassis. You are choosing parts and frame weight, not a compromised geometry at the bottom of the range.
Whether 145mm of travel can really cover everything the old three-bike ladder used to is a question only trail time answers, and the broader “has geometry stopped getting more extreme” argument that Singletracks has been making about 2026 trail bikes applies squarely here. But on paper the Stereo is the clearest statement yet that Cube thinks one well-judged number beats three separate ones. If you have been riding a ONE44, the bike that replaces it is slacker, longer, and simpler. Go sit on the size that matches your reach, not the one that matches your old frame’s label, because the sizing has moved.