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  • SINCE 1922

Radio Cobalt Junior - 2021

Radio Cobalt Junior
  • Color: Black
Color: Black
Size: 18.5-inch
Please select options Unavailable
This item is not permitted to be shipped. However, it can be purchased online and picked up at your local Landry's store.


The Cobalt line combines proven geometry and dialed components, giving you the best start out of the gate during your first days racing. The Cobalt Junior steps up in size without packing on the pounds. At only 8kg, this is one of the lightest junior entry-level bikes out there.

Fresh out of the box with incredible new paint and graphics, you'll be able to spot a Cobalt on the track very easily. All Cobalt bikes now feature fully sealed front hubs and integrated headsets, making them simply unbeatable when comparing price to spec. The Cobalt is one seriously unstoppable machine.


Frame 6061 T6 alloy, forged dropouts with int. chain tensioner
Fork Cr-mo, 1" butted steerer tube, hi-ten fork legs, 23mm offset
Rims Radio, A-M5, double wall, 28H, alloy F&R
Hubs Front: RADIO Cobalt alloy CNC hub, fully sealed, 3/8", 28h, crmo axle
Rear: RADIO Cobalt alloy CNC hub, fully sealed, 3/8", crmo axle, 28h, flip flop
Tires Arisun, XLR8, 20 x 1-1/8"
Bottom Bracket Radio, BSA square taper, sealed
Crankset RADIO Cobalt forged alloy 3pc crank, 155mm long
Chainrings RADIO alloy, 40t sprocket
Cassette/Freewheel ATA, 16T, 1/2" x 3/32", cr-mo
Chain KMC, Z6, 1/2" x 3/32"
Brakes PROMAX MV-87 alloy brake rear
Brake Levers PROMAX XL-378 alloy
Handlebars 4130 seamless cr-mo
Tape/Grips Radio, diamond knurling, closed end, flangeless, 130mm length
Stem Radio, Cobalt top-loader, ext. 40mm, alloy
Headset Radio, integrated headset, sealed, 1"
Seatpost Radio 22.2mm alloy
Saddle RADIO Mini combo seat
Pedals Radio, Cobalt Junior, nylon

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Black / 18.5-inch 04055822509572 2006020121 RAD38576502K