BH SL1: every build compared

SL1 3.5

Mid-rangeCarbon700c2026

SL1 4.0

High endCarbon700c2026

SL1 4.5

High endEnduranceCarbon700c2026

SL1 2.0

Carbon700c2025

The 4 builds of the line side by side, from the cheapest list price: what each step up changes.

At a glance

Differences only

BH SL1 3.5 costs £1,364 less than BH SL1 4.5 (list price).
BH SL1 4.5 has the higher-range groupset: Shimano Ultegra Di2, against Shimano Cues.
BH SL1 4.5 is the newer model (2026).

Key specs7 differences

List price £2,272 – £3,636 +£1,364–

Model year 2026 2026 2026 2025

Frame Carbon

As printed

Toray T400 Carbon with HCIM (Hollow Core Internal Molding)

Carbon ^{°Value not published by the brand} Carbon

As printed

Toray T400 Carbon with HCIM (Hollow Core Internal Molding)

Carbon

As printed

Material: Carbon

Wheelset 700c · Shimano RS171

As printed

Wheelset: Shimano RS171

700c · Vision Team35 ^{°Value not published by the brand} 700c · Vision Team TC30 i23

As printed

Wheelset: Vision Team TC30 i23

700c · Slite Thru Axle ^{°Value not published by the brand}

Drivetrain 2×12 2×12 2×12 2×10

Groupset Shimano 105

As printed

Shimano 105 shift levers

Shimano 105 Di2 ^{°Value not published by the brand} Shimano Ultegra Di2 Higher range

As printed

Shimano Ultegra DI2 shift levers

Shimano Cues

Brake model Shimano 105 hydraulic

As printed

Front/rear brake: Shimano 105 hydraulic

Shimano 105 hydraulic ^{°Value not published by the brand} Shimano Ultegra hydraulic Higher range

As printed

Front/rear brake: Shimano Ultegra hydraulic

Shimano mechanic ^{°Value not published by the brand}

Seatpost BH Lite 27,2 BH Lite 27,2 BH Lite 27,2 BH Lite 27

Prices

Each model's retailers, delivered to your country, and their prices over time.

BH SL1 3.5

BH SL1 4.0

BH SL1 4.5

BH SL1 2.0

Affiliate links: no extra cost for you ♥

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.

SL1 3.5 · Road bike made for very smooth ground, neutral handling, average equipment.
SL1 4.0 · Road bike made for very smooth ground, neutral handling, rather high equipment.
SL1 4.5 · Road bike made for very smooth ground, very nimble, rather high equipment.
SL1 2.0 · road bike, carbon frame, 700c wheels, 2×10 drivetrain

Terrain

EasyDemanding

Handling

NimbleStable

Equipment level

SL1 3.5Equipment level 53/100 · Mid-range
SL1 4.0Equipment level 71/100 · High end
SL1 4.5Equipment level 78/100 · High end

BH SL1 3.5BH SL1 4.0BH SL1 4.5BH SL1 2.0other road bikes

Components and specs

Every spec line by line; the higher range of a component is marked. The technical groups are folded.

Ride type

Ride type–– Endurance

As printed

Designed for those who seek long distances

–

Frame and fork

Fork Carbon

As printed

SL1 Disc Full Integrated Tapeder, Full Carbon 1.5´

Carbon ^{°Value not published by the brand} Carbon

As printed

SL1 Disc Full Integrated Tapered, Full Carbon 1.5"

Carbon ^{°Value not published by the brand}

As printed

SL1 Disc Full Integrated Tapeder, Full Carbon 1.5Â´

Max tyre clearance 32 mm – 32 mm –

Axles Thru-axles

As printed

12 mm Thru Axle, hidden and tool-free

– Thru-axles

As printed

12 mm Thru Axle, hidden and tool-free

–

Bottom bracket BB386EVO

As printed

BB386EVO system

– BB386EVO

As printed

BB386EVO system

–

Seatpost diameter 27.2 mm – 27.2 mm –

Drivetrain6 differences

Groupset brand Shimano

As printed

Shimano 105 shift levers

Shimano ^{°Value not published by the brand} Shimano

As printed

Shimano Ultegra DI2 shift levers

Shimano

Shifting Mechanical

As printed

Shimano 105 shift levers

Electronic, wired ^{°Value not published by the brand}

As printed

Shimano 105 Di2 12sp Shimano 105 DI2

Electronic, wired

As printed

Shimano Ultegra DI2 shift levers

–

Chainrings 2 ^{°Value not published by the brand} 2 ^{°Value not published by the brand} 2 ^{°Value not published by the brand} 2 ^{°Value not published by the brand}

Gears at the back 12 12 ^{°Value not published by the brand} 12 10 ^{°Value not published by the brand}−2

Chainring teeth FSA Gossamer 50/34

As printed

Crank set: FSA Gossamer 50/34

Shimano 105 52/36 ^{°Value not published by the brand} Shimano Ultegra 52/36 Higher range

As printed

Crank set: Shimano Ultegra 52/36

FSA Gossamer 50/34 ^{°Value not published by the brand}

Cassette Shimano 105 11/34 Higher range

As printed

Cassette: Shimano 105 11/34

Shimano 105 11/34 ^{°Value not published by the brand}Higher range Shimano 105 11/34 Higher range

As printed

Cassette: Shimano 105 11/34

Shimano CUES 12/28 ^{°Value not published by the brand}

Rear derailleur Shimano 105 12sp ^{°Value not published by the brand} Shimano 105 Di2 12sp ^{°Value not published by the brand} Shimano Ultegra DI2 12sp ^{°Value not published by the brand}Higher range Shimano CUES ^{°Value not published by the brand}

Shifters Shimano 105 ^{°Value not published by the brand} Shimano 105 DI2 ^{°Value not published by the brand} Shimano Ultegra DI2 ^{°Value not published by the brand}Higher range Shimano CUES ^{°Value not published by the brand}

Brakes

Brakes Hydraulic disc

As printed

Shimano 105 hydraulic (SL1 Disc frame)

Hydraulic disc ^{°Value not published by the brand}

As printed

Shimano 105 Disque hydraulique

Hydraulic disc

As printed

Shimano Ultegra hydraulic (SL1 Disc frame)

–

Wheels and tyres1 difference

Wheel size 700c / 29"

As printed

Chaoyang Shark 700x 28

700c / 29" ^{°Value not published by the brand} 700c / 29"

As printed

Hutchinson Nitro 700x28

700c / 29" ^{°Value not published by the brand}

Rims Aluminium ^{°Value not published by the brand} Aluminium ^{°Value not published by the brand} Aluminium ^{°Value not published by the brand}–

Tyres Chaoyang Shark 700x 28

As printed

Tyres: Chaoyang Shark 700x 28

Hutchinson Nitro 700x 28 ^{°Value not published by the brand} Hutchinson Nitro 700x28

As printed

Tyres: Hutchinson Nitro 700x28

Hutchinson Nitro2 700x 28 ^{°Value not published by the brand}

Tyre width fitted 28 mm 28 mm ^{°Value not published by the brand} 28 mm 28 mm ^{°Value not published by the brand}

Cockpit and seatpost2 differences

Handlebar BH Lite Compact ^{°Value not published by the brand} BH Lite Compact ^{°Value not published by the brand} FSA Energy ACR ^{°Value not published by the brand} BH Lite Compact ^{°Value not published by the brand}

Stem BH SL ^{°Value not published by the brand} BH SL ^{°Value not published by the brand} BH SL ^{°Value not published by the brand}–

Seatpost model BH Lite 27,2 ^{°Value not published by the brand} BH Lite 27,2 ^{°Value not published by the brand} BH Lite 27,2 ^{°Value not published by the brand} BH Lite 27 ^{°Value not published by the brand}

° Value not published by the brand

Geometry

A size per bike (the nearest to the first one's at first), the differences measured from the reference bike.

Size of SL1 3.5

Size of SL1 4.0

Size of SL1 4.5

Differences measured from

SL1 3.5 · M
SL1 4.0 · M
SL1 4.5 · M

Stack and reach

SL1 3.5 · M SL1 3.5 · M — Reach (mm) 384 · Stack (mm) 549
SL1 4.0 · M SL1 4.0 · M — Reach (mm) 384 · Stack (mm) 549
SL1 4.5 · M SL1 4.5 · M — Reach (mm) 384 · Stack (mm) 549

Geometry

Size M M M –

Reach 384 mm 384 mm 384 mm –

Stack 549 mm 549 mm 549 mm –

Top tube (effective) 557 mm 557 mm 557 mm –

Seat tube 463 mm 463 mm 463 mm –

Head tube 150 mm 150 mm 150 mm –

Head angle 73° 73° 73° –

Seat angle 72.5° 72.5° 72.5° –

Chainstays 410 mm 410 mm 410 mm –

Wheelbase 982 mm 982 mm 982 mm –

Front centre 580 mm 580 mm 580 mm –

BB drop 65 mm 65 mm 65 mm –

BB height 271 mm 271 mm 271 mm –

Fork offset 43 mm 43 mm 43 mm –

Trail 58 mm 58 mm 58 mm –

Where to buy them

BH SL1 3.5
List price £2,272
Its full spec sheet Compare the whole BH SL1 range
BH SL1 4.0
Its full spec sheet Compare the whole BH SL1 range
BH SL1 4.5
List price £3,636
Its full spec sheet Compare the whole BH SL1 range
BH SL1 2.0
Its full spec sheet Compare the whole BH SL1 range

Compare other models

BH SL1 3.5 vs BH SL1 4.0

BH SL1: every build compared

At a glance

Prices

Character

Equipment level

Components and specs

Geometry

Stack and reach

Where to buy them

Other comparisons