Kellys Theos R50, LTD P Magic 29/27.5" 725 Wh

Name: Kellys Theos R50, LTD P Magic 29/27.5" 725 Wh
Brand: Kellys

2025 MountainTrail Electric bicycle Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €3,599 Last known price
Travel: 150 / 130 mm Fork / rear shock
Wheels: 29″ / 27.5″
Drivetrain: 1 × 9 34t / 11–46t
Gear range: 418%
Battery: 725 Wh
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–170
MD 168–179
LG 176–187

Components

21 of 23 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 R-series - advanced robotic welded 6-series aluminium alloy / Designed & manufactured in EUROPE / Think Link® suspension system, 130 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

Suspension

2 parts

Drivetrain

5 parts

Cassette
- Shimano CS-LG300-9 9 speeds 11–46t
CS-LG300
Chain
- Shimano CN-LG500
CN-LG500
Crankset

MIRANDA Miranda (34T) - length 170 mm Not identified
Rear derailleur
- Shimano Cues RD-U4000 9 speeds
RD-U4000
Shifters
- Shimano Cues SL-U4010 9 speeds
SL-U4010

Brakes

3 parts

Brake levers
- Shimano BL-MT200
BL-MT200
Brakes
- Shimano BR-MT200
BR-MT200
Disc rotors
- Shimano SM-RT10
SM-RT10

Wheels and tires

4 parts

Cockpit and contact points

5 parts

Sizes and geometry

3 sizes

Enter your height to highlight matching ranges.

Size Reported by the manufacturer

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: Aluminum

Suspension

Suspension configuration: Full suspension
Front travel: 150 mm
Rear travel: 130 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 34
Largest chainring: 34
Rear sprockets: 9
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: Rigid seatpost
Shifting: Mechanical

Electric system

Battery capacity: 725 Wh

Additional specifications

Battery: KELLYS Re-Charge K1 Li-ion internal removable 725 Wh / capacity 20 Ah, co-developed by Kellys-BMZ
Fork spring: Air
Tire width: 2.4″
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: 2025
Sample: 1,808 bicycles with this information
Coverage: 97.5% of the class

Lowest gear

20.3 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

85.0 gear inches

This value is below 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

Mechanical

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: 7.8 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): 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

Differences across 2025 builds
Specification	This bicycle Kellys Theos R50, LTD P Magic 29/27.5" 725 Wh	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
Frame
Frame material	Aluminum	Carbon	Carbon	Carbon	Carbon	Carbon
Bicycle weight	Not informed	20.6 kg	Not informed	Not informed	Not informed	Not informed
Suspension
Rear travel	130 mm	140 mm	140 mm	140 mm	140 mm	140 mm
Drivetrain
Smallest chainring	34	36	34	34	34	34
Largest chainring	34	36	34	34	34	34
Rear sprockets	9	12	10	10	Not informed	Not informed
Smallest sprocket	11	10	11	11	11	11
Largest sprocket	46	51	46	46	50	50
Lowest gear	20.3 in	19.4 in	20.3 in	20.3 in	18.7 in	18.7 in
Highest gear	85.0 in	99.0 in	85.0 in	85.0 in	85.0 in	85.0 in
Cockpit
Seatpost	Rigid seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost
Shifting	Mechanical	Electronic	Mechanical	Mechanical	Mechanical	Mechanical
Electric bicycle systems
Battery capacity	725 Wh	825 Wh	725 Wh	725 Wh	725 Wh	725 Wh
Other specifications
Tire width	2.4″	2.4″	2.6″	2.6″	2.6″	2.6″
Wheel material	Aluminum	Carbon	Aluminum	Aluminum	Aluminum	Aluminum