HASA Deroma 2025 Ultegra DI2 Road Bike with Carbon Wheelset
$27,900.00
Color Options
Black
RedSize Options
The HASA Deroma 2025 Ultegra Di2 Road Bike with Carbon Wheelset pairs a T1100 carbon frame and full-carbon fork with Shimano Ultegra Di2 2x12-speed electronic shifting, hydraulic disc brakes and Boreas Stella Eterna 45 carbon wheels. HASA quotes a complete-bike weight of about 7.2 kg (±0.15 kg) for size M. It suits experienced riders who want Ultegra-level electronic shifting, carbon wheels and a 7 kg-class bike straight out of the box.
At a Glance
- Category: Carbon road bike, disc brakes, electronic shifting (Di2), carbon wheelset included
- Brand: HASA (Heng Feng Bicycle, Taiwan), Deroma series, 2025 model year
- Frame: T1100 carbon frame, full-carbon fork, SAGA integrated 1-1/4" headset, Press Fit 30 bottom bracket
- Drivetrain: Shimano Ultegra Di2, 2x12-speed electronic, 50/34T chainrings, 11-36T cassette
- Wheels: Boreas Stella Eterna 45 carbon wheelset, Continental Grand Prix 700x28C tyres
- Weight: approx. 7.2 kg ±0.15 kg (size M, HASA official figure)
- Best for: experienced riders who want Ultegra Di2 and carbon wheels in one step, and who value climbing and acceleration
*Componts and parts may vary in different production batches. Enquiry is welcome.
Why the Deroma Ultegra Di2?
Many riders start with mechanical shifting and alloy wheels, then find themselves paying again to upgrade wheels and groupset. The Deroma Ultegra Di2 arrives with Ultegra electronic shifting, carbon wheels and a carbon integrated bar already fitted.
T1100 carbon frame, about 7.2 kg complete
HASA's official specification lists the Deroma frame material as T1100 carbon, and HASA's product photos show "TORAYCA T1100" printed on the frame. With Ultegra Di2 and Stella Eterna 45 wheels, HASA quotes about 7.2 kg (±0.15 kg) for size M. On long Hong Kong climbs such as Tai Mo Shan or Fei Ngo Shan, a lighter bike makes starts and climbs less tiring.
Shimano Ultegra Di2 electronic shifting and hydraulic discs
Shimano Ultegra Di2 (R8100 series) sits above 105 in Shimano's road range. It is a 2x12-speed electronic groupset: you shift with buttons, the levers talk to the derailleurs wirelessly, and the levers offer reach and free-stroke adjustment. The same levers operate hydraulic disc brakes for controlled stopping in the rain and on long descents. Gearing is 50/34T with an 11-36T cassette, so the easiest 34x36T gear helps on steep climbs.
Boreas Stella Eterna 45 carbon wheels
This version comes with Boreas Stella Eterna 45 carbon wheels on sealed-bearing hubs with black ED-coated stainless spokes, fitted with Continental Grand Prix 700x28C tyres and TPU inner tubes.
Carbon integrated bar and carbon seatpost
The cockpit is a BOREAS SLR carbon integrated handlebar and stem, the seatpost is full carbon (supplied with the frame), and the saddle is a Selle Italia SLR Boost with carbon rails.
Who Is It For?
- Good fit: riders with some road experience who want to step up to electronic shifting and carbon wheels; riders who climb often, join cycling events or do long weekend rides and care about bike weight.
- Prefer 105 Di2? The same frame and wheels are also offered as the HASA Deroma 2025 105 DI2 Road Bike with Carbon Wheelset, with Shimano 105 Di2 and an official weight of about 7.3 kg (±0.15 kg, size M).
- Tighter budget: consider the T800-framed HASA CORAGGIO 2025 105 Di2 Road Bike with Carbon Wheelset, which also pairs 105 Di2 with carbon wheels.
- Worth knowing: HASA only lists the stock 700x28C tyre and does not publish the frame's maximum tyre clearance. If you plan to fit wider tyres, please contact us before ordering.
Choosing Between HASA Road Bike Versions
The Deroma Ultegra Di2 and Deroma 105 Di2 share the same T1100 carbon frame and Stella Eterna 45 wheels. They differ in groupset (Ultegra Di2 vs 105 Di2), chain (CN-M8100-12 vs CN-M7100-12) and official weight (about 7.2 kg vs about 7.3 kg, both size M ±0.15 kg). The Deroma differs from the CORAGGIO in frame material (T1100 vs T800), bottom bracket (Press Fit 30 vs Press Fit BB-86) and weight (HASA quotes about 8.7–8.94 kg across CORAGGIO versions). The table below compares the main specs of HASA road bikes on our shop:
| Model | Frame | Groupset | Wheelset | Brakes | Weight (approx.) | Best for |
|---|---|---|---|---|---|---|
| Hasa Cometa 105 Di2 Road Bike with Carbon Wheelset | T800/T1000 carbon, full carbon fork | 2 × 12-speed electronic (Shimano 105 Di2, 50/34T, 11–36T) | Crociera CS45 carbon | Shimano 105 hydraulic disc | — | Riders who want an aero frame with fully internal routing and 105 Di2 electronic shifting |
| Hasa Cometa Ultegra Di2 Road Bike with Carbon Wheelset | T800/T1000 carbon, full carbon fork | 2 × 12-speed electronic (Shimano Ultegra Di2, 50/34T, 11–36T) | Carbon (please confirm model before ordering) | Shimano Ultegra hydraulic disc | — | Experienced riders who want an aero frame with fully internal routing and the Ultegra Di2 groupset |
| HASA Deroma 2025 105 DI2 Road Bike with Carbon Wheelset | T1100 carbon, full carbon fork | 2 × 12-speed electronic (Shimano 105 Di2, 50/34T, 11–36T) | Boreas Stella Eterna 45 carbon | Shimano 105 disc | 7.3 kg ± 0.15 kg (size M, HASA official) | Weight-conscious riders who want a T1100 carbon frame with 105 Di2 |
| HASA Deroma 2025 Ultegra DI2 Road Bike with Carbon Wheelset (this page) | T1100 carbon, full carbon fork | 2 × 12-speed electronic (Shimano Ultegra Di2, 50/34T, 11–36T) | Boreas Stella Eterna 45 carbon | Shimano Ultegra disc | 7.2 kg ± 0.15 kg (size M, HASA official) | Weight-conscious riders who want a T1100 carbon frame with Ultegra Di2 |
| HASA CORAGGIO 2025 105 Road Bike | T800 carbon, full carbon fork | 2 × 12-speed mechanical (Shimano 105, 50/34T, 11–36T) | Boreas Alloy A28D aluminium | Shimano 105 hydraulic disc | 8.94 kg (HASA official) | Riders starting out on a carbon frame with 105 mechanical shifting and alloy wheels |
| HASA CORAGGIO 2025 105 Road Bike with Carbon Wheelset | T800 carbon, full carbon fork | 2 × 12-speed mechanical (Shimano 105, 50/34T, 11–36T) | Crociera CS45 carbon | Shimano 105 hydraulic disc | 8.83 kg (HASA official) | Riders who want to keep mechanical shifting but upgrade to carbon wheels first |
| HASA CORAGGIO 2025 105 Di2 Road Bike | T800 carbon, full carbon fork | 2 × 12-speed electronic (Shimano 105 Di2, 50/34T, 11–36T) | Boreas Alloy A28D aluminium | Shimano 105 hydraulic disc | 8.93 kg (HASA official) | Riders who want 105 Di2 electronic shifting with alloy wheels |
| HASA CORAGGIO 2025 105 Di2 Road Bike with Carbon Wheelset | T800 carbon, full carbon fork | 2 × 12-speed electronic (Shimano 105 Di2, 50/34T, 11–36T) | Crociera CS45 carbon | Shimano 105 hydraulic disc | 8.7 kg (HASA official) | Riders who want both 105 Di2 electronic shifting and carbon wheels |
| HASA RSX Frameset | T800 carbon, full carbon fork | Frameset only, no groupset | Not included | Not included | 2.8 kg (HASA official frameset figure) | Riders who want to choose their own groupset and wheels and build the bike their way |
| HASA RTS1 2x9 speed Kids 700c Road Bike | 6061 aluminium alloy, alloy fork | 2 × 9-speed mechanical (SENSAH, 46/34T, 152 mm cranks, 11–32T) | 700c double-wall rims, 32H | Tektro R-315 calipers | 9.6 kg (Jollymap product info, without pedals) | Kids about 130 cm tall and up (Jollymap recommendation) who want to try road cycling or enter a triathlon |
Sizing
The Deroma comes in XS, S, M, L and XL. HASA does not publish a rider-height chart, so here are the key figures from the official geometry (mm). Compare reach and stack with a bike that already fits you well:
| Size | Seat tube | Top tube | Reach | Stack |
|---|---|---|---|---|
| XS | 471 | 503 | 368 | 505 |
| S | 486 | 524 | 378 | 527 |
| M | 503 | 540 | 384 | 548 |
| L | 522 | 555 | 388 | 565 |
| XL | 533 | 576 | 397 | 584 |
Source: HASA official Deroma geometry.
Full Specifications
| Brand | HASA (Heng Feng Bicycle, Taiwan) |
| Model | Deroma 2025, Shimano Ultegra Di2 with Boreas Stella Eterna 45 carbon wheelset |
| Frame | T1100 carbon |
| Fork | Full carbon |
| Headset | SAGA integrated 1-1/4" |
| Bottom bracket | Press Fit 30 |
| Seat clamp | Alloy (supplied with frame) |
| Shifters | Shimano Ultegra Di2, 2x12-speed |
| Front derailleur | Shimano Ultegra Di2 |
| Rear derailleur | Shimano Ultegra Di2 |
| Crankset | Shimano Ultegra, 50/34T |
| Cassette | Shimano Ultegra, 11-36T |
| Chain | Shimano CN-M8100-12 |
| Wheelset | Boreas Stella Eterna 45 carbon |
| Hubs | Sealed bearing |
| Spokes | Stainless steel, black ED coating |
| Tyres | Continental Grand Prix 700x28C, TPU inner tube |
| Saddle | Selle Italia SLR Boost Carbon Rail |
| Handlebar / stem | BOREAS SLR carbon integrated handlebar and stem |
| Seatpost | Full carbon (supplied with frame) |
| Brakes | Shimano Ultegra hydraulic disc, Shimano Ultegra Di2 levers |
| Weight | Approx. 7.2 kg ±0.15 kg (size M, HASA official figure) |
| Colours (Jollymap) | Black, White, Red |
| Sizes (Jollymap) | XS, S, M, L, XL |
Specification source: HASA official 2025 DEROMA product page (Shimano Ultegra Di2 with Boreas Stella Eterna 45 Carbon version). Tyres and chain follow HASA's current listing; the earlier spec chart on this page lists DURO SL 700x25C tyres and a CN-M7100-12 chain, so if the stock build matters to you, please contact us before ordering. HASA notes that the actual product prevails.
About HASA
HASA may be less familiar in Hong Kong, but it is well known in Taiwan for value for money. Its parent company, Heng Feng Bicycle, was founded in 1990 and has spent more than thirty years developing and manufacturing titanium, carbon and aluminium frames, exhibiting at international shows such as Taipei Cycle and Eurobike.
Jollymap's Advice
With a carbon road bike, getting the size right matters most. If you are between two sizes or want to confirm the stock build (tyres, gearing), please contact us with your height, inseam and the size of your current bike before ordering. To ride more comfortably and efficiently, see Jollymap's bike sizing and fitting service.
FAQ
How much does the HASA Deroma Ultegra Di2 weigh?
HASA quotes about 7.2 kg (±0.15 kg) for the Deroma 2025 with Shimano Ultegra Di2 and Boreas Stella Eterna 45 carbon wheels in size M. Other sizes vary slightly; the 105 Di2 version on the same frame is quoted at about 7.3 kg (size M).
Which HASA Deroma size should I choose?
Use reach and stack as your starting point. The Deroma comes in XS to XL; for example, size M has 384 mm reach and 548 mm stack, and size S has 378 mm reach and 527 mm stack (HASA official geometry). HASA does not publish rider heights, so if you are unsure, contact us before ordering or use Jollymap's Bike Fit service.
What is the difference between the HASA Deroma and CORAGGIO?
Mainly frame material and weight. The Deroma uses a T1100 carbon frame with a Press Fit 30 bottom bracket and weighs about 7.2–7.3 kg (size M, official); the CORAGGIO uses a T800 carbon frame with Press Fit BB-86, and HASA quotes about 8.7–8.94 kg across its versions. Both are available with Shimano 105 Di2 and carbon wheels, for example the HASA CORAGGIO 2025 105 Di2 Road Bike with Carbon Wheelset.
Deroma Ultegra Di2 or 105 Di2: what changes?
Only the groupset. The frame, wheels, cockpit and seatpost are the same. This Ultegra Di2 version uses a CN-M8100-12 chain and weighs about 7.2 kg (size M, official); the Deroma 105 Di2 version uses a CN-M7100-12 chain and weighs about 7.3 kg. Both are 2x12-speed with 50/34T and 11-36T.
What colours does the HASA Deroma come in?
Jollymap offers Black, White and Red. HASA's official (Chinese) site lists four colours, which translate as Lava Red, Obsidian Black, Titanium White and Stardust Blue; Stardust Blue is not one of our shop options, so please contact us if you are interested.
What tyres does it come with, and can I fit wider ones?
HASA currently lists Continental Grand Prix 700x28C tyres with TPU inner tubes. HASA does not publish the maximum tyre clearance, so please contact us before ordering if you plan to run wider tyres.
What kind of brand is HASA, and where can I buy it in Hong Kong?
HASA is the house brand of Taiwan's Heng Feng Bicycle, founded in 1990, which develops and manufactures titanium, carbon and aluminium frames; Hong Kong is listed among the distribution markets on HASA's official site. HASA road bikes are available at Jollymap online and in store; contact us to confirm size and colour.
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Specifications and components follow the manufacturer's latest release and may change without notice. If in doubt, please contact us to confirm before ordering.
Last updated: October 2026
