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2021 Kellys

THEOS F50 29"/27.5" 720Wh

A 29″ / 27.5″ carbon frame full suspension trail e-bike with upper mid-range components.
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FrameCarbon
SuspensionFull, 140 / 150mm
ForkRockShox 35 Gold RL
ShockRockShox Deluxe Select
Wheels29″ / 27.5″ Aluminum
Drivetrain1 × 10
GroupsetDeore
MotorShimano 85Nm mid-drive
Battery720Wh
BrakesShimano Hydraulic Disc
SeatpostDropper
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

25 mph

THEOS F50 29"/27.5" 720Wh

26 mph

Similar Bikes

Highest gear

(descending)

Reviews
E-Mountainbike Magazine
Kellys Theos F90 E-MTB first ride review – Is this carbon revolution?

Mar 2022 · Mike Hunger

We tested the Kellys THEOS F90 eMTB with Shimano EP8 motor and 725 Wh battery and can tell you how it performs on the trail.

Highs
  • Innovative frame material

  • Balanced handling

  • Upright pedalling position

Lows
  • Only two frame sizes to choose from

Read Review

Geometry
Specs
Build
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

Fork

ROCK SHOX 35 GOLD RL (29) Boost, 150mm, DebonAir / Motion Control / Maxle Stealth 15mm thru axle

Travel150mm

Spring TypeAir

Shock

ROCK SHOX Deluxe Select R, DebonAir (210x55mm)

Travel140mm

Stem

KLS Alm/En 50 - diam 28.6mm / bar bore 31.8mm / length 60mm

Handlebar

KLS Alm/En 70 RiseBar - diam 31.8mm / rise 25mm / width 760mm

Saddle

fi´zi:k Taiga S-alloy rails

Seatpost

KS RAGE-I Remote Telescopic - diam 30.9mm / length 442mm, travel 150mm

TypeDropper

Pedals

plastic

Grips

KLS Poison OneLockon

Groupset
Rear Derailleur

SHIMANO Deore M5120 (direct mount)

Crank

SHIMANO EM600 (34T) - length 170mm

Shifters

SHIMANO Deore SL-M4100-R Rapidfire Plus (I-Spec EV)

Cassette

SHIMANO CS-M4100-10 (11-46T)

Chain

KMC e10T (120 links)

Brakes

SHIMANO MT420 Hydraulic Disc

TypeShimano Hydraulic Disc

Brake Levers

SHIMANO Deore (021) BL-M4100

Wheels
Rims

KLS Bender Disc 622x38 front / 584x38 rear (32 holes)

Spokes

stainless steel black

Front Hub

SHIMANO MT400-B Disc Center Lock (32 holes)

Rear Hub

SHIMANO MT400-B Disc Center Lock (32 holes)

Tires

SCHWALBE Nobby Nic Performance 65-622 (29x2.60) ADDIX front / SCHWALBE Nobby Nic Performance 70-584 (27.5x2.80) ADDIX rear

Disc Rotors

203mm front / 203mm rear

Electric Components
Motor

SHIMANO EP8 (021), 85Nm, 36V

Battery

KELLYS Re-Charge K1 Li-ion internal removable 720Wh / capacity 20Ah, co-developed by Kellys-BMZ

Display

SHIMANO SC-E5003 cycle computer with assist switch

Rider Notes
Riders Also Viewed

First added April 12

Last updated April 12

Not listed for 1,895 days