Kellys Theos F100, SH 29/27.5" 825 Wh

Name: Kellys Theos F100, SH 29/27.5" 825 Wh
Brand: Kellys

2025 MountainTrail Electric bicycle Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €9,999 Last known price
Travel: 150 / 140 mm Fork / rear shock
Wheels: 29″ / 27.5″
Drivetrain: 1 × 12 36t / 10–51t
Gear range: 510%
Battery: 825 Wh
Weight: 20.6 kg 45.4 lb · Reference configuration not specified
Frame: Carbon
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

18 of 20 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, 140 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

2 parts

Battery
- Kellys
Motor
- Shimano EP8 DU-EP801 1 speed
DU-EP801

Suspension

2 parts

Drivetrain

5 parts

Brakes

3 parts

Brake levers
- Shimano XTR BL-M9120
BL-M9120
Brakes
- Shimano XTR BR-M9120
BR-M9120
Disc rotors

GALFER Fixed Disc Wave®, DB004W 203 mm front / DBO34W 203 mm rear Not identified

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
Bicycle weight: 20.6 kg

45.4 lb

Suspension

Suspension configuration: Full suspension
Front travel: 150 mm
Rear travel: 140 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: 825 Wh

Additional specifications

Battery: KELLYS Re-Charge K1 Li-ion internal removable 825 Wh / capacity 23 Ah
Fork spring: Air
Tire width: 2.4″
Wheel material: Carbon
Wheel size: 29″, 27.5″

Technical analysis

4 measures

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

Front travel

150 mm

This value is above the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,808 bicycles with this information
Coverage: 97.5% of the class

Lowest gear

19.4 gear inches

This value is above the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,382 bicycles with this information
Coverage: 74.5% of the class

Highest gear

99.0 gear inches

This value is above the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,382 bicycles with this information
Coverage: 74.5% of the class

Shifting

Electronic

387 of 1,847 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,847 bicycles with this information
Coverage: 99.6% 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
Class reference (p10–p90): 17.1–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2025
Lowest gear: 1382 bicycles with this information, 74.5% of the class
Highest gear: 1382 bicycles with this information, 74.5% of the class

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 2025 builds
Specification	This bicycle Kellys Theos F100, SH 29/27.5" 825 Wh	Kellys Theos F50, SH 29/27.5" 725 Wh	Kellys Theos F50 SH 29"/27.5" 725Wh	Kellys Theos F60, SH 29/27.5" 725 Wh	Kellys Theos F60 SH 29"/27.5" 725Wh	Kellys Theos F60, SH 29/27.5" 820 Wh
Frame
Bicycle weight	20.6 kg	Not informed	Not informed	Not informed	Not informed	Not informed
Drivetrain
Smallest chainring	36	34	34	34	34	34
Largest chainring	36	34	34	34	34	34
Rear sprockets	12	10	10	Not informed	Not informed	Not informed
Smallest sprocket	10	11	11	11	11	11
Largest sprocket	51	46	46	50	50	50
Lowest gear	19.4 in	20.3 in	20.3 in	18.7 in	18.7 in	18.7 in
Highest gear	99.0 in	85.0 in	85.0 in	85.0 in	85.0 in	85.0 in
Cockpit
Shifting	Electronic	Mechanical	Mechanical	Mechanical	Mechanical	Mechanical
Electric bicycle systems
Battery capacity	825 Wh	725 Wh	725 Wh	725 Wh	725 Wh	820 Wh
Other specifications
Tire width	2.4″	2.6″	2.6″	2.6″	2.6″	2.4″
Wheel material	Carbon	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum