Kellys Theos F50 29"/27.5" 720Wh

Name: Kellys Theos F50 29"/27.5" 720Wh
Brand: Kellys

2021 MountainTrail Electric bicycle Manufacturer page

Travel: 150 / 140 mm Fork / rear shock
Wheels: 29″ / 27.5″
Drivetrain: 1 × 10 34t / 11–46t
Gear range: 418%
Battery: 720 Wh
Frame: Carbon
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

21 of 25 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 F series - Thermoplastic Hybrid Steel-Carbon Composite a.k.a. FEATHER® by Rein4ced assembled by advanced robotic manufacturing / Think Link suspension system, 140mm rear travel, integrated removable battery, 1.8“ tapered HT, post mount 203mm, mullet 29 / 27.5+ wheelset, 12x148mm Boost thru axle / Made in EU Not identified

Electric system

3 parts

Suspension

2 parts

Drivetrain

5 parts

Cassette
- Shimano Deore CS-M4100-10 10 speeds 11–46t
CS-M4100-10
Chain
- KMC
Crankset
- Shimano FC-EM600 34t
FC-EM600
Rear derailleur
- Shimano Deore RD-M5120 11 speeds
RD-M5120
Shifters
- Shimano Deore SL-M4100-R 10 speeds
SL-M4100

Brakes

3 parts

Brake levers
- Shimano Deore BL-M4100
BL-M4100
Brakes
- Shimano BR-MT420
BR-MT420
Disc rotors

203mm front / 203mm rear Not identified

Wheels and tires

5 parts

Front hub
- Shimano HB-MT400-B
HB-MT400
Rear hub
- Shimano FH-MT400-B
FH-MT400
Rims
- KLS
Spokes

stainless steel black Not identified
Tires
- Schwalbe Nobby Nic

Cockpit and contact points

6 parts

Grips
- KLS
Handlebar
- KLS
Pedals

plastic Not identified
Saddle
- Fizik
Seatpost
- KS
Stem
- KLS

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: 150 mm
Rear travel: 140 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 34
Largest chainring: 34
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 46
Lowest gear: 20.3 in
Highest gear: 85.0 in

Wheels and brakes

Wheel configuration: Different sizes
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Electric system

Battery capacity: 720 Wh

Additional specifications

Battery: KELLYS Re-Charge K1 Li-ion internal removable 720Wh / capacity 20Ah, co-developed by Kellys-BMZ
Fork spring: Air
Tire width: 2.6″
Wheel material: Aluminum
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: 2021
Sample: 1,324 bicycles with this information
Coverage: 98.1% of the class

Lowest gear

20.3 gear inches

This value is above the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,137 bicycles with this information
Coverage: 84.2% of the class

Highest gear

85.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,137 bicycles with this information
Coverage: 84.2% of the class

Shifting

Mechanical

53 of 1,346 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,346 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.8 km/h
Highest gear: 32.6 km/h

Total gear range 418%

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: 20.3–85.0 gear inches
Class reference (p10–p90): 16.9–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2021
Lowest gear: 1137 bicycles with this information, 84.2% of the class
Highest gear: 1137 bicycles with this information, 84.2% 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 2021 builds

Differences across 2021 builds
Specification	This bicycle Kellys Theos F50 29"/27.5" 720Wh	Kellys Theos F70 29"/27.5" 720Wh	Kellys Theos F90 29"/27.5" 720Wh	Kellys Theos i50 29"/27.5" 630Wh
Frame
Frame material	Carbon	Carbon	Carbon	Aluminum
Suspension
Front travel	150 mm	180 mm	180 mm	160 mm
Rear travel	140 mm	170 mm	170 mm	150 mm
Drivetrain
Smallest chainring	34	38	34	38
Largest chainring	34	38	34	38
Rear sprockets	10	12	11	10
Smallest sprocket	11	10	11	11
Largest sprocket	46	51	46	46
Lowest gear	20.3 in	20.5 in	20.3 in	22.7 in
Highest gear	85.0 in	104.5 in	85.0 in	95.0 in
Cockpit
Shifting	Mechanical	Mechanical	Electronic	Mechanical
Electric bicycle systems
Battery capacity	720 Wh	720 Wh	720 Wh	630 Wh
Other specifications
Rear shock spring	Not informed	Coil	Not informed	Not informed
Bottom bracket standard	Not informed	Not informed	BSA	Not informed