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Sunn Kern S1

Mid-rangeAll-mountainFull suspensionAluminiumReleased in 2026
Sunn Kern S1, side view
GX

Sunn Kern S1

all-mountain full suspension mountain bike, aluminium frame, 29" wheels, 1×12 drivetrain, mid-range equipment

Key specs

Model year
2026
Weight
15.2 kg
Frame
Aluminium
Suspension
Full suspension, 150 / 140 mm
Fork model
Marzocchi Bomber Z2 150mm
Shock
Marzocchi Bomber Air 185x50 Trunnion
Wheelset
29" · e*thirteen LG1 EN 30mm 32T
Drivetrain
1×12
Groupset
SRAM GX Eagle Lunar 12v
Brake model
Formula Cura 2 203/180mm
Seatpost
Dropper · BRUTE Dropper

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.

« Mountain bike very demanding, average equipment. »

Terrain
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EasyDemanding

Built for rougher ground than most other mountain bikes.

Not enough data yet for the Handling chart: it fills in once the sheet is complete.

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.

Kern S1other mountain bikes

Spec sheet

Every value is read on the brand’s page; hover it to see its source and date.

Ride type

Discipline
All-mountain
Suspension
Full suspension

Frame and fork

Frame
Aluminium

Suspension

Fork travel
150 mm
Rear travel
140 mm
Fork model
Marzocchi Bomber Z2 150mm
Shock
Marzocchi Bomber Air 185x50 Trunnion

Drivetrain

Groupset brand
SRAM
Groupset
SRAM GX Eagle Lunar 12v
Shifting
Mechanical
Chainrings
1
Gears at the back
12
Chainring teeth
SRAM GX Eagle Lunar CL55
Cassette
SRAM SX Eagle 11-50
Rear derailleur
SRAM GX EAGLE 12V LUNAR

Brakes

Brakes
Hydraulic disc
Brake model
Formula Cura 2 203/180mm
Front rotor
203 mm
Rear rotor
180 mm

Wheels and tyres

Wheel size
700c / 29"
Wheelset
e*thirteen LG1 EN 30mm 32T
Rims
Aluminium
Tyres
Maxxis Assegai 29x2.5 EXO / Maxxis Aggressor 29x2.3 EXO
Tyre width fitted
64 mm

Cockpit and seatpost

Seatpost
Dropper
Handlebar
BRUTE ONE CNC 31.8 X 40MM
Stem
BRUTE ONE CNC 31.8 X 40MM
Seatpost model
BRUTE Dropper

Weight

Weight
15.2 kg

Spec sheets read at: sunn.fr

The range

Comparable mountain bikes

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Who is it for?

The sports the brand announces, and the features that go with them.

  • Cycling

    • Discipline: All-mountain
    • Suspension: Full suspension
    • Fork travel: 150 mm
    • Wheel size: 700c / 29"

Frequently asked questions

Is the Sunn Kern S1 a hardtail or a full suspension?

Full suspension, according to the brand.

How much travel does the Sunn Kern S1 fork have?

150 mm, according to the brand.

Does the Sunn Kern S1 come with a dropper post?

Seatpost: Dropper, according to the brand.

Specs updated on Nov 5, 2026Some values come from third-party spec databases, cross-checked with the brand where it publishes them.Report an error