Kellys Theos RSE70, P Titanium 29/27.5" 820 Wh

Name: Kellys Theos RSE70, P Titanium 29/27.5" 820 Wh
Brand: Kellys

2025 MountainTrail Electric bicycle Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €4,699 Last known price
Travel: 140 / 120 mm Fork / rear shock
Wheels: 29″ / 27.5″
Gear range: 455%
Battery: 725 Wh
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

21 of 27 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 RSE-series - Superlight design, advanced robotic welded Al 6061-T6 / Designed & manufactured in EUROPE / Think Link® suspension system, 120 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-LG400-11 11 speeds 11–50t
CS-LG400-11
Chain
- Shimano CN-LG500
CN-LG500
Crankset

MIRANDA Miranda (34T) - length 170 mm Not identified
Rear derailleur
- Shimano Deore XT RD-M8130 11 speeds
RD-M8130
Shifters
- Shimano Deore XT SL-M8130 11 speeds
SL-M8130

Brakes

3 parts

Brake levers
- Shimano Deore BL-M4100
BL-M4100
Brakes
- Shimano BR-M420
BR-M420
Disc rotors

GALFER Fixed Disc Wave® DB034W Center Lock, 203 mm front / 203 mm rear Not identified

Wheels and tires

5 parts

Front hub
- Shimano HB-TC500-15-B
HB-TC500-15
Rear hub
- Shimano FH-TC500-HM-B 11 speeds
FH-TC500-HM
Rims
- KLS
Spokes

stainless steel black Not identified
Tires
- Schwalbe

Cockpit and contact points

6 parts

Other components

2 parts

Fenders

aluminium alloy Not identified
Lights
- Trelock

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: Aluminum

Suspension

Suspension configuration: Full suspension
Front travel: 140 mm
Rear travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 34
Largest chainring: 34
Smallest sprocket: 11
Largest sprocket: 50
Lowest gear: 18.7 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: 725 Wh

Additional specifications

Battery: KELLYS K2 AMXXPRO CARBON 725 Wh - superhigh energy density 213 Wh/kg, weight 3.4 kg, capacity 20 Ah, co-developed by KELLYS-BMZ
Fork spring: Air
Tire width: 2.35″
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

140 mm

This value is within 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

18.7 gear inches

This value is within 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: 7.2 km/h
Highest gear: 32.6 km/h

Total gear range 455%

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: 18.7–85.0 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 RSE70, P Titanium 29/27.5" 820 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
Front travel	140 mm	150 mm	150 mm	150 mm	150 mm	150 mm
Rear travel	120 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
Smallest sprocket	11	10	11	11	11	11
Largest sprocket	50	51	46	46	50	50
Lowest gear	18.7 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
Rear sprockets	Not informed	12	10	10	Not informed	Not informed
Cockpit
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	2.35″	2.4″	2.6″	2.6″	2.6″	2.6″
Wheel material	Aluminum	Carbon	Aluminum	Aluminum	Aluminum	Aluminum