RADIO Cobalt Expert

Name: RADIO Cobalt Expert
Brand: RADIO

2023 BMX Manufacturer page

Suspension: Rigid
Wheels: 20″
Drivetrain: 1 42t
Gear range: 100%
Weight: 8.95 kg 19.7 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Rim brake

Rider height by size (cm)

Size guide

One Size 120+

Components

15 of 19 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

6061 T6 alloy, forged dropouts with int. chain tensioner Not identified

Suspension

1 part

Fork

cr-mo, 1-1/8″ butted steerer tube, hi-ten fork legs, 23mm offset Not identified

Drivetrain

4 parts

Bottom bracket
- Radio
Cassette
- Radio
Chain
- KMC Z6 6 speeds
Crankset
- Radio

Brakes

2 parts

Brake levers
- ProMax
XL-378
Brakes
- ProMax
MV-87

Wheels and tires

4 parts

Front hub
- Radio
Rear hub
- Radio
Rims
- Radio
A-M5
Tires

Arisun, XLR8, 20″x 1-3/8″ Not identified

Cockpit and contact points

7 parts

Grips
- Radio
Handlebar

4130 seamless cr-mo Not identified
Headset
- FSA HS NO.28/41SC 15mm black 1-1/8
Pedals
- Radio
Saddle
- Radio
Seatpost
- Radio
Stem
- Radio

Sizes and geometry

1 size Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size One Size

Table

Geometry diagram unavailable

The drawing needs wheelbase, reach, stack, head tube length, seat tube length and chainstay length, which the manufacturer did not publish. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Head tube angle	73°
Seat tube angle	71°
Bottom bracket dropmm	10.8

Not published by the manufacturer: Reach, Stack, Top tube length, Seat tube length, Head tube length, Chainstay length, Wheelbase, Front center, Bottom bracket height, Standover height, Fork rake, Trail, Stack/reach ratio, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Steel
Bicycle weight: 8.95 kg

19.7 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Rear sprockets: 1
Smallest sprocket: 42
Largest sprocket: 42

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Wheel material: Aluminum
Wheel size: 20″

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 2023 builds

Differences across 2023 builds
Specification	This bicycle RADIO Cobalt Expert	RADIO Cobalt Junior	RADIO Cobalt Mini	RADIO Cobalt PRO
Frame
Bicycle weight	8.95 kg	8.07 kg	7.79 kg	9.95 kg
Drivetrain
Smallest sprocket	42	40	38	44
Largest sprocket	42	40	38	44
Other specifications
Tire width	Not informed	Not informed	Not informed	1.95″