Kellys Theos F90, SH 29/27.5" 820 Wh

Name: Kellys Theos F90, SH 29/27.5" 820 Wh
Brand: Kellys

2026 MountainEnduro Electric bicycle Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €7,999 Last known price
Travel: 180 / 170 mm Fork / rear shock
Wheels: 29″ / 27.5″
Drivetrain: 1 × 12 36t / 10–51t
Gear range: 510%
Battery: 820 Wh
Frame: Carbon
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

20 of 22 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

KELLYS THEOS F100 Carbon-Aramid Composite / Designed & manufactured in EUROPE / Think Link® suspension system, 170 mm rear travel, integrated removable battery, 1.8" tapered HT, post mount 203 mm, mullet 29/27.5"+ wheelset, 12x148 mm Boost thru axle Not identified

Electric system

3 parts

Battery
- Kellys
Display
- Shimano SC-EN600
SC-EN600
Motor
- Shimano EP8 DU-EP801 1 speed
DU-EP801

Suspension

2 parts

Drivetrain

6 parts

Bottom bracket

BSA, 73mm, threaded Not identified
Cassette
- Shimano Deore XT CS-M8100-12 12 speeds 10–51t
CS-M8100-12
Chain
- Shimano Deore CN-M6100
CN-M6100
Crankset
- Shimano SM-CRE80-12-B 1 speed 36t
SM-CRE80-12
Rear derailleur
- Shimano Deore XT RD-M8150
RD-M8150
Shifters
- Shimano Deore XT SW-M8150-IR
SW-M8150-IR

Brakes

3 parts

Wheels and tires

2 parts

Cockpit and contact points

5 parts

Sizes and geometry

2 sizes

Rider-height ranges are not published for these sizes.

Size

Geometry not published

The manufacturer lists these sizes without frame measurements, so there is no drawing or geometry table.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon

Suspension

Suspension configuration: Full suspension
Front travel: 180 mm
Rear travel: 170 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 36
Largest chainring: 36
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 19.4 in
Highest gear: 99.0 in

Wheels and brakes

Wheel configuration: Different sizes
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Electronic

Electric system

Battery capacity: 820 Wh

Additional specifications

Battery: KELLYS Re-Charge K1 Li-ion internal removable 820 Wh / capacity 23 Ah, co-developed by Kellys-BMZ
Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.4″
Wheel material: Aluminum
Wheel size: 29″, 27.5″

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

180 mm

This value is above the central range for this class.

Cohort: Mountain / Enduro Model year: 2026
Sample: 1,332 bicycles with this information
Coverage: 95.2% of the class

Rear travel

170 mm

This value is above the central range for this class.

Cohort: Mountain / Enduro Model year: 2026
Sample: 1,005 bicycles with this information
Coverage: 71.8% of the class

Shifting

Electronic

454 of 1,399 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2026
Sample: 1,399 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.4 km/h
Highest gear: 37.9 km/h

Total gear range 510%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 19.4–99.0 gear inches

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2026 builds
Specification	This bicycle Kellys Theos F90, SH 29/27.5" 820 Wh	Kellys Theos AX20, Desert Brown 29" 800 Wh	Kellys Theos AX20, Magic Hydra 29" 800 Wh	Kellys Theos AX20, Magic ICE 29" 800 Wh	Kellys Theos AX40, Arctic 29" 800 Wh	Kellys Theos AX40, Ruthenium 29" 800 Wh
Frame
Frame material	Carbon	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Suspension
Front travel	180 mm	170 mm	170 mm	170 mm	170 mm	170 mm
Rear travel	170 mm	160 mm	160 mm	160 mm	160 mm	160 mm
Drivetrain
Smallest chainring	36	34	34	34	34	34
Largest chainring	36	34	34	34	34	34
Rear sprockets	12	11	11	11	Not informed	Not informed
Smallest sprocket	10	11	11	11	11	11
Largest sprocket	51	50	50	50	50	50
Lowest gear	19.4 in	19.7 in	19.7 in	19.7 in	19.7 in	19.7 in
Highest gear	99.0 in	89.6 in	89.6 in	89.6 in	89.6 in	89.6 in
Wheels
Wheel configuration	Different sizes	Same size	Same size	Same size	Same size	Same size
Cockpit
Shifting	Electronic	Mechanical	Mechanical	Mechanical	Mechanical	Mechanical
Electric bicycle systems
Battery capacity	820 Wh	800 Wh	800 Wh	800 Wh	800 Wh	800 Wh
Other specifications
Bottom bracket standard	BSA	Not informed	Not informed	Not informed	Not informed	Not informed
Wheel size	29″ / 27.5″	29″	29″	29″	29″	29″