Kellys Lumi 50

2021 YouthGeneral youth Manufacturer page

Fork travel: 40 mm
Wheels: 20″
Drivetrain: 1 × 7 32t / 12–32t
Gear range: 267%
Frame: Aluminum
Brakes: Rim brake

Sizes

Size guide

255mm

The manufacturer did not publish rider heights for these sizes.

Components

12 of 21 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 Aluminium alloy MTB 20 Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

6 parts

Bottom bracket

cartridge (126mm) Not identified
Cassette
- Shimano CS-HG200-7 7 speeds 12–32t
CS-HG200
Chain
- KMC Z7 7 speeds
Crankset
- Prowheel 32t
Rear derailleur
- Shimano Tourney RD-TY300 7 speeds
RD-TY300
Shifters
- Shimano SL-RS35
SL-RS35

Brakes

2 parts

Brake levers

APSE Not identified
Brakes
- Tektro

Wheels and tires

5 parts

Front hub

alloy (28 holes) Not identified
Rear hub

alloy (28 holes) Not identified
Rims
- KLS
Spokes

steel black Not identified
Tires
- Mitas

Cockpit and contact points

6 parts

Grips

kraton Not identified
Handlebar

steel RiseBar - diam 25.4mm / width 550mm Not identified
Pedals

plastic Not identified
Saddle
- KLS
Seatpost
- Kalloy
Stem
- Kalloy

Sizes and geometry

1 size

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: Hardtail
Front travel: 40 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 7
Smallest sprocket: 12
Largest sprocket: 32
Lowest gear: 20.0 in
Highest gear: 53.3 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 1.9″
Wheel material: Aluminum
Wheel size: 20″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.7 km/h
Highest gear: 20.4 km/h

Total gear range 267%

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: 20.0–53.3 gear inches

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 Lumi 50	Kellys Lumi 30	Kellys Lumi 70	Kellys Lumi 90
Frame
Fork material	Not informed	Steel	Steel	Aluminum
Suspension
Suspension configuration	Hardtail	Rigid	Rigid	Rigid
Front travel	40 mm	Not informed	Not informed	Not informed
Drivetrain
Rear sprockets	7	Not informed	Not informed	8
Smallest sprocket	12	14	Not informed	11
Largest sprocket	32	28	Not informed	32
Lowest gear	20.0 in	22.9 in	Not informed	20.0 in
Highest gear	53.3 in	45.7 in	Not informed	58.2 in
Drivetrain technologies	Not informed	Not informed	internally-geared-hub	Not informed
Brakes
Brake type	Rim brake	Rim brake	Coaster brake	Rim brake
Other specifications
Fork spring	Coil	Not informed	Not informed	Not informed
Suspension	Hardtail	Rigid	Rigid	Rigid
Tire width	1.9″	1.9″	1.9″	1.75″