BH SL1 3.5 vs BH SL1 4.0

SL1 3.5

SL1 4.0

Mid-rangeCarbon700c2026

High endCarbon700c2026

Two builds of the BH SL1 line: 7 differences, mostly in the components.

BHBH SL1 3.5

BHBH SL1 4.0

At a glance

Differences only

BH SL1 4.0 has the higher-range groupset: Shimano 105 Di2, against Shimano 105.

Key specs2 differences

List price £2,272 –

Model year 2026 2026

Frame Carbon

As printed

Toray T400 Carbon with HCIM (Hollow Core Internal Molding)

Carbon ^{°Value not published by the brand}

Wheelset 700c · Shimano RS171

As printed

Wheelset: Shimano RS171

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

Drivetrain 2×12 2×12

Groupset Shimano 105

As printed

Shimano 105 shift levers

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

Brake model Shimano 105 hydraulic

As printed

Front/rear brake: Shimano 105 hydraulic

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

Seatpost BH Lite 27,2 BH Lite 27,2

Prices

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

BH SL1 3.5

BH SL1 4.0

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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.

Terrain

EasyDemanding

Handling

NimbleStable

Equipment level

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

BH SL1 3.5BH SL1 4.0other road bikes

Components and specs

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

Frame and fork

Fork Carbon

As printed

SL1 Disc Full Integrated Tapeder, Full Carbon 1.5´

Carbon ^{°Value not published by the brand}

Max tyre clearance 32 mm –

Axles Thru-axles

As printed

12 mm Thru Axle, hidden and tool-free

–

Bottom bracket BB386EVO

As printed

BB386EVO system

–

Seatpost diameter 27.2 mm –

Drivetrain4 differences

Groupset brand Shimano

As printed

Shimano 105 shift levers

Shimano ^{°Value not published by the brand}

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

Chainrings 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}

Chainring teeth FSA Gossamer 50/34

As printed

Crank set: FSA Gossamer 50/34

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

Cassette Shimano 105 11/34

As printed

Cassette: Shimano 105 11/34

Shimano 105 11/34 ^{°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}Higher range

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

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

Wheels and tyres1 difference

Wheel size 700c / 29"

As printed

Chaoyang Shark 700x 28

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

Rims 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}

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

Cockpit and seatpost

Handlebar BH Lite Compact ^{°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}

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

Differences measured from

SL1 3.5 · M
SL1 4.0 · 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

Geometry

Size M M

Reach 384 mm 384 mm

Stack 549 mm 549 mm

Top tube (effective) 557 mm 557 mm

Seat tube 463 mm 463 mm

Head tube 150 mm 150 mm

Head angle 73° 73°

Seat angle 72.5° 72.5°

Chainstays 410 mm 410 mm

Wheelbase 982 mm 982 mm

Front centre 580 mm 580 mm

BB drop 65 mm 65 mm

BB height 271 mm 271 mm

Fork offset 43 mm 43 mm

Trail 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

Compare the whole BH SL1 range

Frequently asked questions

What groupset do BH SL1 3.5 and BH SL1 4.0 come with?

BH SL1 3.5: Shimano 105. BH SL1 4.0: Shimano 105 Di2.

How do BH SL1 3.5 and BH SL1 4.0 compare on geometry?

In size M, BH SL1 3.5 has a stack of 549 mm for a reach of 384 mm; in size M, BH SL1 4.0 has 549 mm for 384 mm. More stack for the reach means a more upright position.

Compare other models

BH SL1 3.5 vs BH SL1 4.0

At a glance

Prices

Character

Equipment level

Components and specs

Geometry

Stack and reach

Where to buy them

Frequently asked questions

Other comparisons