Kellys Naga AIR 50, Frosted 20"

Name: Kellys Naga AIR 50, Frosted 20"
Brand: Kellys

2025 YouthGeneral youth Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €449 Last known price
Suspension: Rigid
Wheels: 20″
Drivetrain: 1 × 7 30t / 12–32t
Gear range: 267%
Weight: 7.74 kg 17.1 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Rim brake

Sizes

Size guide

235 mm

The manufacturer did not publish rider heights for these sizes.

Components

9 of 22 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 Superlight double butted Aluminium alloy Junior 20" Not identified

Suspension

1 part

Fork

Aluminium alloy Not identified

Drivetrain

7 parts

Bottom bracket

cartridge (117.5 mm) Not identified
Cassette
- Shimano CS-HG200-7 7 speeds 12–32t
CS-HG200
Chain
- KMC Z7 7 speeds
Crankset
- Prowheel 30t
Front derailleur

chain guide Not identified
Rear derailleur
- Shimano Tourney RD-TY300 7 speeds
RD-TY300
Shifters
- Shimano SL-RV200-7R 7 speeds
SL-RV200-7R

Brakes

2 parts

Brake levers

APSE Not identified
Brakes
- Tektro

Wheels and tires

5 parts

Front hub

alloy (20 holes) Not identified
Rear hub

alloy (20 holes) Not identified
Rims
- KLS
Spokes

steel black Not identified
Tires
- Schwalbe Little Joe

Cockpit and contact points

6 parts

Grips

kraton Not identified
Handlebar

integrated - diam 31.8 mm / width 560 mm Not identified
Pedals

plastic Not identified
Saddle
- Selle Royal Explora Junior
Seatpost

alloy - diam 27.2 mm / length 250 mm Not identified
Stem

integrated BarStem - diam 28.6 mm / length 40 mm Not identified

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
Fork material: Aluminum
Bicycle weight: 7.74 kg

17.1 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 7
Smallest sprocket: 12
Largest sprocket: 32
Lowest gear: 18.8 in
Highest gear: 50.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2″
Wheel material: Aluminum
Wheel size: 20″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.2 km/h
Highest gear: 19.2 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: 18.8–50.0 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 2025 builds

Differences across 2025 builds
Specification	This bicycle Kellys Naga AIR 50, Frosted 20"	Kellys Naga 80	Kellys Naga 90	Kellys Naga 90 26"	Kellys Naga AIR 50, 20"	Kellys Naga AIR 50, 24"
Frame
Fork material	Aluminum	Not informed	Aluminum	Aluminum	Aluminum	Aluminum
Bicycle weight	7.74 kg	Not informed	Not informed	Not informed	7.8 kg	8.4 kg
Suspension
Suspension configuration	Rigid	Hardtail	Rigid	Rigid	Rigid	Rigid
Front travel	Not informed	63 mm	Not informed	Not informed	Not informed	Not informed
Drivetrain
Smallest chainring	30	24	30	30	30	30
Largest chainring	30	42	30	30	30	30
Rear sprockets	7	Not informed	10	10	7	7
Smallest sprocket	12	Not informed	11	11	12	12
Largest sprocket	32	Not informed	42	48	32	32
Lowest gear	18.8 in	Not informed	18.6 in	16.3 in	18.8 in	22.5 in
Highest gear	50.0 in	Not informed	70.9 in	70.9 in	50.0 in	60.0 in
Drivetrain technologies	Not informed	internally-geared-hub	Not informed	Not informed	Not informed	Not informed
Other specifications
Suspension	Rigid	Hardtail	Rigid	Rigid	Rigid	Rigid
Tire width	2″	2″	2″	2″	2″	1.95″
Wheel size	20″	26″	26″	26″	20″	24″
Fork spring	Not informed	Coil	Not informed	Not informed	Not informed	Not informed