BH SL1 4.5
Build Shimano Ultegra Di2
Grey
BH SL1 4.5
endurance road bike, carbon frame, 700c wheels, 2×12 drivetrain, high end equipment
Key specs
- List price
- £3,636
- Model year
- 2026
- Frame
- Carbon
- Wheelset
- 700c · Vision Team TC30 i23
Toray T400 Carbon with HCIM (Hollow Core Internal Molding)
Wheelset: Vision Team TC30 i23
- Drivetrain
- 2×12
- Groupset
- Shimano Ultegra Di2
- Brake model
- Shimano Ultegra hydraulic
- Seatpost
- BH Lite 27,2
Shimano Ultegra DI2 shift levers
Front/rear brake: Shimano Ultegra hydraulic
Spec sheet
Every value is read on the brand’s page; hover it to see its source and date.
Ride type
- Ride type
- Endurance
Designed for those who seek long distances
Frame and fork
- Frame
- Carbon
- Fork
- Carbon
- Max tyre clearance
- 32 mm
- Axles
- Thru-axles
- Bottom bracket
- BB386EVO
- Seatpost diameter
- 27.2 mm
Toray T400 Carbon with HCIM (Hollow Core Internal Molding)
SL1 Disc Full Integrated Tapered, Full Carbon 1.5"
12 mm Thru Axle, hidden and tool-free
BB386EVO system
Drivetrain
- Groupset brand
- Shimano
- Groupset
- Shimano Ultegra Di2
- Shifting
- Electronic, wired
- Chainrings
- 2
- Gears at the back
- 12
- Chainring teeth
- Shimano Ultegra 52/36
- Cassette
- Shimano 105 11/34
- Rear derailleur
- Shimano Ultegra DI2 12sp
- Shifters
- Shimano Ultegra DI2
Shimano Ultegra DI2 shift levers
Shimano Ultegra DI2 shift levers
Shimano Ultegra DI2 shift levers
Crank set: Shimano Ultegra 52/36
Cassette: Shimano 105 11/34
Brakes
- Brakes
- Hydraulic disc
- Brake model
- Shimano Ultegra hydraulic
Shimano Ultegra hydraulic (SL1 Disc frame)
Front/rear brake: Shimano Ultegra hydraulic
Wheels and tyres
- Wheel size
- 700c / 29"
- Wheelset
- Vision Team TC30 i23
- Rims
- Aluminium
- Tyres
- Hutchinson Nitro 700x28
- Tyre width fitted
- 28 mm
Hutchinson Nitro 700x28
Wheelset: Vision Team TC30 i23
Tyres: Hutchinson Nitro 700x28
Cockpit and seatpost
- Handlebar
- FSA Energy ACR
- Stem
- BH SL
- Seatpost model
- BH Lite 27,2
Weight
- Weight
- Being updated
Geometry
- Geometry size
- M
- Stack
- 549 mm
- Reach
- 384 mm
- Head angle
- 73 °
- Seat angle
- 72.5 °
- Chainstays
- 410 mm
- Wheelbase
- 981.6 mm
- Bottom bracket drop
- 65 mm
Spec sheets read at: bhbikes.com
Character
The bike at a glance: the ground it is made for, how it handles, its gears and its equipment, beside the other bikes of its kind.
« Road bike made for very smooth ground, very nimble, rather high equipment. »
EasyDemanding
Made for smooth ground, more than other endurance road bikes.
NimbleStable
Livelier in the turns than most other endurance road bikes.
Not enough data yet for the Gearing chart: it fills in once the sheet is complete.
Not enough data yet for the Equipment level chart: it fills in once the sheet is complete.
SL1 4.5other endurance road bikes
Geometry
6 sizes: XS, S, M, L, XL, 2XL.
| Geometry of the SL1 4.5 per size | ||||||
|---|---|---|---|---|---|---|
| Reach (mm) | 382 | 383 | 384 | 386 | 396 | 403 |
| Stack (mm) | 517 | 523 | 549 | 583 | 594 | 605 |
| Top tube (effective) (mm) | 510 | 544 | 557 | 570 | 586 | 600 |
| Seat tube (mm) | 398 | 433 | 463 | 493 | 504 | 520 |
| Head tube (mm) | 108 | 120 | 150 | 185 | 196 | 205 |
| Head angle (°) | 71.8 | 72 | 73 | 73 | 73 | 73.2 |
| Seat angle (°) | 74.8 | 72.5 | 72.5 | 72.5 | 72 | 71.8 |
| Chainstays (mm) | 410 | 410 | 410 | 410 | 410 | 410 |
| Wheelbase (mm) | 963 | 978 | 982 | 994 | 1,005 | 1,007 |
| Front centre (mm) | 565 | 577 | 580 | 593 | 603 | 603 |
| BB drop (mm) | 75 | 65 | 65 | 65 | 65 | 65 |
| BB height (mm) | 261 | 271 | 271 | 271 | 271 | 271 |
| Fork offset (mm) | 31 | 40 | 43 | 43 | 41 | 34 |
| Trail (mm) | 78 | 67 | 58 | 58 | 60 | 66 |
The range
Comparable road bikes
Who is it for?
The sports the brand announces, and the features that go with them.
Cycling
- Ride type: Endurance
- Groupset: Shimano Ultegra Di2
- Max tyre clearance: 32 mm
Frequently asked questions
What kind of riding is the BH SL1 4.5 made for?
Endurance, according to the brand.
How wide a tyre fits the BH SL1 4.5?
Up to 32 mm, according to the brand.
Does the BH SL1 4.5 have electronic shifting?
Electronic, wired, according to the brand.