Sunn Radical S1
Build Shimano XT
Sunn Radical S1
enduro full suspension mountain bike, carbon frame, 29" wheels, 1×12 drivetrain, high end equipment
Key specs
- Model year
- 2026
- Weight
- 16.7 kg
- Frame
- Carbon
- Suspension
- Full suspension, 170 / 160 mm
- Fork model
- RockShox ZEB Debonair+ Rush RC
- Shock
- RockShox Super Deluxe Select Trunnion 205/60
Full carbon Toray Enduro Boost, integrated, 160 mm
RockShox ZEB, Debonair+, Rush RC, 170 mm, Boost, tapered
Amortisseur : RockShox Super Deluxe Select Trunnion 205/60
- Wheelset
- 29" · E-Thirteen LG1+ / Brute One
- Drivetrain
- 1×12
- Groupset
- Shimano XT / Deore
- Brake model
- Formula Cura 2
- Seatpost
- Dropper · BRUTE DROPPER 130MM (S)
Jantes : E-Thirteen LG1+, 29'', 32T ; Moyeu : Brute One, 32T, Boost, thru axle
Dérailleur arrière : Shimano XT RD-M8100, 12V ; Manette : Shimano Deore SL-M6100, 12V
Freins : Formula Cura 2, 220/203
Tige de selle : Brute Dropper, 130 mm (S), 150 mm (M), 170 mm (L/XL)
Spec sheet
Every value is read on the brand’s page; hover it to see its source and date.
Ride type
- Discipline
- Enduro
- Suspension
- Full suspension
Débattement : 170/160 (av/ar)
Frame and fork
- Frame
- Carbon
- Axles
- Thru-axles
Full carbon Toray Enduro Boost, integrated, 160 mm
Brute One, 32T, Boost, thru axle
Suspension
- Fork travel
- 170 mm
- Rear travel
- 160 mm
- Fork model
- RockShox ZEB Debonair+ Rush RC
- Shock
- RockShox Super Deluxe Select Trunnion 205/60
RockShox ZEB, Debonair+, Rush RC, 170 mm, Boost, tapered
Amortisseur : RockShox Super Deluxe Select Trunnion 205/60
Drivetrain
- Groupset brand
- Shimano
- Groupset
- Shimano XT / Deore
- Mixed groupset
- yes
- Shifting
- Mechanical
- Chainrings
- 1
- Gears at the back
- 12
- Chainring teeth
- Shimano MT512 32T 165 mm
- Cassette
- Shimano Deore CS-M6100 10-51
- Rear derailleur
- SHIMANO XT RD-M8100 12V AR
- Crank length
- 165 mm
Shimano XT RD-M8100, 12V
Dérailleur arrière : Shimano XT RD-M8100, 12V ; Manette : Shimano Deore SL-M6100, 12V
SHIMANO XT RD-M8100 12V AR
Pédalier : Shimano MT512, 12V, 165 mm, 32T
Cassette : Shimano Deore CS-M6100, 12V, 10-51, Microspline
Brakes
- Brakes
- Hydraulic disc
- Brake model
- Formula Cura 2
- Front rotor
- 220 mm
- Rear rotor
- 203 mm
Formula Cura Disque hydraulique
Freins : Formula Cura 2, 220/203
Wheels and tyres
- Wheel size
- 700c / 29"
- Wheelset
- E-Thirteen LG1+ / Brute One
- Rims
- Aluminium
- Tubeless ready
- yes
- Tyres
- Michelin Wild Enduro MS Racing Line
- Tyre width fitted
- 61 mm
Taille des roues : 29''
Jantes : E-Thirteen LG1+, 29'', 32T ; Moyeu : Brute One, 32T, Boost, thru axle
Michelin Wild Enduro MS Racing Line, 29x2.40, TLR
Cockpit and seatpost
- Seatpost
- Dropper
- Handlebar width
- 780 mm
- Handlebar
- 3D FORGED ALLOY, INTEGRATED 31.8X45MM
- Stem
- 3D FORGED ALLOY, INTEGRATED 31.8X45MM
- Seatpost model
- BRUTE DROPPER 130MM (S)
Tige de selle : Brute Dropper, 130 mm (S), 150 mm (M), 170 mm (L/XL)
Weight
- Weight
- 16.7 kg
Geometry
- Geometry size
- M
- Stack
- 637 mm
- Reach
- 460 mm
- Head angle
- 64 °
- Seat angle
- 77.5 °
- Chainstays
- 445 mm
- Wheelbase
- 1,250 mm
Géométrie (S / M / L)
Spec sheets read at: sunn.fr
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 rather for smooth ground, average gearing, rather high equipment. »
EasyDemanding
Made for smooth ground, more than other enduro mountain bikes.
Not enough data yet for the Handling chart: it fills in once the sheet is complete.
Gearing
- This bike: Radical S18 km/h - 40 km/h
- Average of other enduro mountain bikes8 km/h - 40 km/h
Easiest gear (climbing)Hardest gear (descending)
From 8 km/h in its easiest gear to 40 km/h in its hardest.
Not enough data yet for the Equipment level chart: it fills in once the sheet is complete.
Radical S1other enduro mountain bikes
Geometry
3 sizes: S, M, L.
| Geometry of the Radical S1 per size | |||
|---|---|---|---|
| Reach (mm) | 435 | 460 | 485 |
| Stack (mm) | 628 | 637 | 646 |
| Top tube (effective) (mm) | 574 | 601 | 629 |
| Seat tube (mm) | 360 | 410 | 460 |
| Head tube (mm) | 100 | 110 | 120 |
| Head angle (°) | 64 | 64 | 64 |
| Seat angle (°) | 77.5 | 77.5 | 77.5 |
| Chainstays (mm) | 445 | 445 | 445 |
| Wheelbase (mm) | 1,221 | 1,250 | 1,280 |
| Front centre (mm) | 777 | 806 | 836 |
| Fork offset (mm) | 20 | 0 | 20 |
The range
Comparable mountain bikes
Who is it for?
The sports the brand announces, and the features that go with them.
Cycling
- Discipline: Enduro
- Suspension: Full suspension
- Fork travel: 170 mm
- Wheel size: 700c / 29"
Frequently asked questions
Is the Sunn Radical S1 a hardtail or a full suspension?
Full suspension, according to the brand.
How much travel does the Sunn Radical S1 fork have?
170 mm, according to the brand.
Does the Sunn Radical S1 come with a dropper post?
Seatpost: Dropper, according to the brand.