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2023 RADIO

COBALT MINI

A 20″ aluminum frame bmx bike with promax rim brakes.
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Weight17.2 lbs  
FrameAluminum
SuspensionRigid
ForkSteel
Wheels20″ Aluminum
BrakesPromax Rim
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Insights
Sizing
One Size

3'11" +

🐐 Estimated

Rider Fit Notes

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Geometry
Specs
Build
Frame

6061 T6 alloy, forged dropouts with int. chaintensioner

BB StandardBSA, Threaded

ColorsBlack; Metallic Red

Fork

cr-mo, 1″ butted steerer tube, hi-ten fork legs, 23mm offset

Bottom Bracket

Radio, BSA square taper, sealed

Headset

Radio, integrated headset, sealed, 1″

Stem

Radio, Cobalt-toploader, ext. 40mm, alloy

Handlebar

4130 seamless cr-mo

Saddle

RADIO “Mini” combo seat

Seatpost

Radio 22.2mm alloy

TypeRigid

Pedals

Radio, Cobalt Junior, nylon

Grips

Radio, diamond knurling, closed end, flangeless, 102mm length

Groupset
Crank

RADIO “Cobalt” forged alloy 3pc crank, 140mm long

Cassette

RADIO alloy, 38t sprocket

Chain

KMC, Z6, 1/2″ x 3/32″

Brakes

PROMAX “MV-87” alloy brake rear

TypePromax Rim

Brake Levers

PROMAX “XL-378” alloy brake rear

Wheels
Rims

Radio, A-M5, double wall, 28H, alloy f&r

Front Hub

RADIO “Cobalt” alloy CNC hub, fully sealed, 3/8″s, 28h, crmo axle

Rear Hub

RADIO “Cobalt” alloy CNC hub, fully sealed, 3/8″s, crmo axle, 28h, flip flop

Tires

Arisun, XLR8, 20″x 1-1/8″

Rider Notes
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First added December 6

Last updated July 13

Not listed for 685 days