BH Ultralight 2027: Lighter, faster, more versatile
22.10.26 16:00 12026-10-22T16:00:00+02:00Text: PM, Erwin Haiden (translated by AI)Photos: BH BikesBH has given its lightweight race bike a comprehensive update. A frame weight below 700 grams, improved aerodynamics and clearance for 35 mm tyres are intended to turn the new Ultralight into a versatile all-rounder. Four builds are available, starting at 4.999,90 euros.22.10.26 16:00 2052026-10-22T16:00:00+02:00BH Ultralight 2027: Lighter, faster, more versatile
22.10.26 16:00 2052026-10-22T16:00:00+02:00 PM, Erwin Haiden (translated by AI) BH BikesBH has given its lightweight race bike a comprehensive update. A frame weight below 700 grams, improved aerodynamics and clearance for 35 mm tyres are intended to turn the new Ultralight into a versatile all-rounder. Four builds are available, starting at 4.999,90 euros.22.10.26 16:00 2052026-10-22T16:00:00+02:00
Lightweight construction and aerodynamics were long considered two very different things. While classic climbing bikes were meant to weigh as little as possible, aero race bikes focused primarily on reducing drag. Those boundaries are becoming increasingly blurred, and with the latest generation of the Ultralight, BH is following the same trend.
The Spanish brand has given its lightweight classic a thorough overhaul. Alongside an 11 % reduction in frame weight, BH claims a 12 % improvement in aerodynamic efficiency compared with its predecessor. There is also fully integrated cable routing, revised geometry and increased tyre clearance. Some of these updates come directly from the development of the aerodynamically optimised BH Aerolight.
A frame weighing less than 700 grams, yet with better aerodynamics
BH clearly has no intention of compromising with the new Ultralight.
Frame weight below 700 grams
At the heart of the new Ultralight is a carbon frame made from Toray T1100G fibres, which according to the manufacturer weighs less than 700 grams, making it around 11 % lighter than its predecessor.
It is produced using the so-called HCIM process (Hollow Core Internal Molding). High pressure during the moulding process is intended to ensure wall thicknesses that are as consistent as possible and clean internal surfaces. Excess resin and unnecessary accumulations of material are reduced, saving weight without unduly compromising stiffness.
Whether the promised figures hold true on the scales, and how the new carbon lay-up affects comfort and handling, will only become clear out on the road.
| Tech Specs | BH Ultralight 9.0 | BH Ultralight 6.0 |
|---|---|---|
| Frame | Ultralight Carbon Monocoque, ECL-Evo, ACR | Ultralight Carbon Monocoque, ECL-Evo, ACR |
| Fork | Ultralight Integrated Full Carbon, tapered 1,5" | Ultralight Integrated Full Carbon, tapered 1,5" |
| Headset | FSA ACR | FSA ACR |
| Groupset | Shimano Dura-Ace Di2, 12-speed | Shimano 105 Di2, 12-speed |
| Crankset | Shimano Dura-Ace, 52/36 T | Shimano 105, 50/34 T |
| Cassette | Shimano Dura-Ace, 11-34 T | Shimano 105, 11-34 T |
| Brakes | Shimano Dura-Ace, hydraulic | Shimano 105, hydraulic |
| Wheelset | BH EVO Stealth Carbon | Vision TC45 Carbon |
| Tyres | Pirelli P Zero Race, 700 x 28 | – |
| Stem | Vision | Vision |
| Handlebar | Vision | Vision |
| Saddle | Prologo Dimension Nack R2 | – |
| Seatpost | BH Ultralight, integrated | BH Ultralight, integrated |
| Frame sizes | XS, SM, MD, LA, XL | XS, SM, MD, LA, XL |
| Price | 8.499,90 € | 4.999,90 € |
There’s a bit of Aerolight in there too
Visually, the Ultralight has moved much closer to its aerodynamic sibling. Kammtail tube profiles, a new integrated fork, the aerodynamically shaped seatpost and optimised tube junctions are intended to reduce drag.
The design was developed using CFD simulations in collaboration with the University of the Basque Country (EHU).
According to BH, aerodynamic efficiency has improved by 12 % compared with the previous generation. At 60 km/h, correspondingly less power should be required to overcome aerodynamic drag. However, the manufacturer provides no figures for the actual watt savings or the precise test conditions.
For the typical amateur rider, 60 km/h on the flat is something of a rarity anyway. There is no question that aerodynamic improvements can also deliver benefits at lower speeds, though their extent depends heavily on your speed, wind conditions and riding position.
Race geometry with more tyre clearance
BH remains true to its sporty approach with the geometry. A compact rear triangle, relatively low front end and sporty riding position are intended to deliver direct handling.
The increase in tyre clearance to 35 mm is particularly interesting. Alongside classic 28 mm road tyres, this allows you to fit significantly higher-volume rubber, which can improve comfort and traction, especially on rough tarmac and poor back roads.
That does little to change its fundamental purpose, of course: the Ultralight remains a thoroughbred road bike and wider tyres alone certainly do not turn it into a gravel bike.
For power transfer, BH continues to rely on a generously dimensioned BB386EVO bottom bracket area. This is intended to make the connection between the down tube, seat tube and chainstays as stiff as possible.
35 mm tyre clearance does not turn the Ultralight into a gravel bike
but it does broaden its range of uses considerably.| Geometry | XS | SM | MD | LA | XL |
|---|---|---|---|---|---|
| Seat tube length (mm) | 463 | 483 | 502 | 517 | 538 |
| Head tube length (mm) | 100 | 110 | 126 | 140 | 165 |
| Fork axle-to-crown (mm) | 383 | 383 | 383 | 383 | 383 |
| Effective top tube length (mm) | 510 | 525 | 541 | 559 | 575 |
| Chainstay length (mm) | 410 | 410 | 410 | 410 | 410 |
| Wheelbase (mm) | 973,9 | 975 | 979 | 988 | 1004,7 |
| Bottom bracket drop (mm) | 72,2 | 72 | 70 | 70 | 70 |
| Seat tube angle (°) | 74,5 | 74 | 73,5 | 73 | 73 |
| Head tube angle (°) | 71,2 | 72,3 | 72,75 | 73 | 73 |
| Reach (mm) | 367 | 374 | 381 | 389 | 397 |
| Stack (mm) | 513 | 526 | 542 | 557 | 581 |
Geometry in detail
The Ultralight is offered in five frame sizes, from XS to XL. The geometry is consistently sporty, with reach figures ranging from 367 to 397 mm and stack figures from 513 to 581 mm.
The chainstays remain at 410 mm across all sizes, while the head angle varies from 71,2 to 73 degrees depending on frame size.
Integration down to the last detail
As is now standard on modern road bikes, all cables and hoses disappear into the cockpit and frame. The seatpost clamp is also invisibly integrated.
The SRAM UDH-compatible dropout is a practical touch, making it easier to source a replacement if the derailleur hanger is damaged. There are also weight-optimised thru-axles and the Planck rear light already familiar from other BH models, which attaches magnetically to the seat tube.
The latter is a neat detail for anyone who does not ride their road bike exclusively in the sunshine.
Alongside three standard colours, the Ultralight will also be available through the BH Unique programme. This lets you configure individual colour combinations and details.
Four models from 4.999,90 euros
The current price list includes four builds. All share the new carbon frame, integrated fork, electronic Shimano Di2 shifting and hydraulic disc brakes.
The top-of-the-range Ultralight 9.0 comes with Shimano Dura-Ace Di2, BH EVO Stealth carbon wheels and 28 mm Pirelli P Zero Race tyres.
The Ultralight 8.0 uses Shimano Ultegra Di2 with power measurement and the same BH EVO Stealth wheels. The Ultralight 7.0 features Ultegra Di2 without a listed power meter and Vision SC45 wheels.
The entry-level model is the Ultralight 6.0 with Shimano 105 Di2 and Vision TC45 carbon wheels.
| Model | Build | Price |
|---|---|---|
| Ultralight 9.0 | Dura-Ace Di2, BH EVO Stealth | 8.499,90 € |
| Ultralight 8.0 | Ultegra Di2, power meter, BH EVO Stealth | 7.499,90 € |
| Ultralight 7.0 | Ultegra Di2, Vision SC45 | 5.999,90 € |
| Ultralight 6.0 | 105 Di2, Vision TC45 | 4.999,90 € |
Specific weight figures for the complete bikes are not yet available. The prices shown come from BH’s model overview.
Lightweight construction meets everyday practicality
With the new Ultralight, BH is following a trend seen throughout the road bike industry: the boundaries between classic climbing bikes and aero race machines are becoming increasingly blurred.
A frame weight below 700 grams certainly makes a statement, and the combination of optimised aerodynamics, modern integration and clearance for 35 mm tyres sounds thoroughly interesting on paper.
The classic climbing specialist has had its day.
The new Ultralight is intended to shine not only uphill, but also on fast sections.Whether the new Ultralight really combines the best of both worlds will have to be established in a real-world review. The technical foundations are certainly in place.
More information at www.bhbikes.com.
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