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GT Speed Series Junior

GT Speed Series Junior
Neon Yellow
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Get your kid's head in the game and mind on the track with the GT Speed Series Junior. The lightest aluminum race frame on the market features a race-ready geometry and quick-change dropouts to dial-in the setup for changing conditions. BMX-bred components from BOX, Promax, and GT make for a serious race machine, and the drivetrain has been specifically spec'd for light weight, stiffness, and quick power transfer. This bike flies over doubles like they're one big roller, and gets your little racer in and out of a berm faster than you can blink. When every pedal stroke counts, count on Speed Series.


Frame GT Speed Series MK7 Junior Race design, 6061-T6 aluminum, formed and butted tubes, reverse dropouts, Euro BB
Fork GT BMX Junior Race, 6061 AL 1" steerer, 25.4x2.2mm legs
Headset 1" Integrated design, 36x45 degree sealed bearings
Axles Front: Female w/ 3/8" allen bolts w/ AL washers
Rear: Female w/ 3/8" allen bolts w/ AL washers
Rims/Wheels Speed Series aero double wall, 28h
Hubs Front: GT Mohawk, Alloy CNC body, sealed bearings
Rear: GT Mohawk, alloy CNC body, 4 Sealed Bearings, 4-pawl cassette
Spokes 14g
Tires Tioga Power Block
Front: 20 x 1-3/8"
Rear: 20 x 1-1/8"
Crankset GT Forged Alloy 2-Piece, 135mm Arms, 24mm hollow alloy spindle
Chainrings 36T CNC aluminum, AL chainring bolts
Bottom Bracket EB24 sealed bearings
Chain KMC Z610
Handlebars GT Speed Alloy 4"H x 24"W, 8° back, 2° up, tapered cross bar
Tape/Grips GT Statement
Stem GT Top Load, cold-forged 1", 40mm Length
Brake Levers Promax BL-367
Brakes Rear: Promax MV-87, 85mm cold forged AL arms, mini linear pull
Pedals GT mini size platform, PP material
Saddle BOX Echelon
Seat Post AL integrated w/ saddle, 22.2 x 135mm
Accessories & Extras GT 6061 AL CNC chain tensioners

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Neon Yellow / 17.5-inch 038675131132 G47208M10SM 14962