Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
2018 GT Speed Series Junior
Previous used estimate
$153 - $158
Actual value depends on condition, size, and local demand.
Value Guide market data · 2018 GT Speed Series Junior
12-month projected trend
12%
Direction and magnitude, not judgment
vs. category average
6%
Drops faster than category avg
Price over time - 2018 GT Speed Series Junior
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Speed model years
2021$359 - $369▲ 134% vs. 2018
2020$263 - $270▲ 71% vs. 2018
2019$224 - $230▲ 46% vs. 20182018$153 - $158Currently viewing
2016$226 - $232▲ 47% vs. 2018
2015$286 - $294▲ 86% vs. 2018
2014$286 - $294▲ 86% vs. 2018
2013$228 - $235▲ 49% vs. 2018
2012$219 - $225▲ 43% vs. 20182000$165 - $170▲ 8% vs. 20181999$193 - $198▲ 26% vs. 2018Compare Speed Series Junior models
1 modelsChoose a different build or frame style to see its value.
Overview
About this bike
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.
Specifications
- Subtype
- BMX
- Category
- BMX
- Component Fork
- GT BMX Junior Race, 6061 AL 1" steerer, 25.4x2.2mm legs
- Component Hubs
- Front: GT Mohawk, Alloy CNC body, sealed bearings Rear: GT Mohawk, alloy CNC body, 4 Sealed Bearings, 4-pawl cassette
- Component Size
- 17.5-inch
- Component Stem
- GT Top Load, cold-forged 1", 40mm Length
- Product Family
- Speed
- Component Axles
- Front: Female w/ 3/8" allen bolts w/ AL washers Rear: Female w/ 3/8" allen bolts w/ AL washers
- Component Chain
- KMC Z610
- Component Color
- Neon Yellow
- Component Frame
- GT Speed Series MK7 Junior Race design, 6061-T6 aluminum, formed and butted tubes, reverse dropouts, Euro BB
- Component Brakes
- Rear: Promax MV-87, 85mm cold forged AL arms, mini linear pull
- Component Pedals
- GT mini size platform, PP material
- Component Saddle
- BOX Echelon
- Component Headset
- 1" Integrated design, 36x45 degree sealed bearings
- Component Crankset
- GT Forged Alloy 2-Piece, 135mm Arms, 24mm hollow alloy spindle
- Component Handlebar
- GT Speed Alloy 4"H x 24"W, 8° back, 2° up, tapered cross bar
- Component Seat Post
- AL integrated w/ saddle, 22.2 x 135mm
- Component Chainrings
- 36T CNC aluminum, AL chainring bolts
- Component Front Tire
- Tioga Power Block Front: 20 x 1-3/8" Rear: 20 x 1-1/8"
- Component Tape Grips
- GT Statement
- Component Brake Levers
- Promax BL-367
- Component Bottom Bracket
- EB24 sealed bearings
- Component Accessories Extras
- GT 6061 AL CNC chain tensioners
- Hubs
- Front: GT Mohawk, Alloy CNC body, sealed bearings Rear: GT Mohawk, alloy CNC body, 4 Sealed Bearings, 4-pawl cassette
- Crankset
- GT Forged Alloy 2-Piece, 135mm Arms, 24mm hollow alloy spindle
- Pedals
- GT mini size platform, PP material
- Bottom Bracket
- EB24 sealed bearings
- Chain
- KMC Z610
- Saddle
- BOX Echelon
- Handlebar
- GT Speed Alloy 4"H x 24"W, 8° back, 2° up, tapered cross bar
- Headset
- 1" Integrated design, 36x45 degree sealed bearings
- Stem
- GT Top Load, cold-forged 1", 40mm Length
- Accessories & Extras
- GT 6061 AL CNC chain tensioners
- Axles
- Front: Female w/ 3/8" allen bolts w/ AL washers Rear: Female w/ 3/8" allen bolts w/ AL washers
- Brake Levers
- Promax BL-367
- Brakes
- Rear: Promax MV-87, 85mm cold forged AL arms, mini linear pull
- Chainrings
- 36T CNC aluminum, AL chainring bolts
- Fork
- GT BMX Junior Race, 6061 AL 1" steerer, 25.4x2.2mm legs
- Frame
- GT Speed Series MK7 Junior Race design, 6061-T6 aluminum, formed and butted tubes, reverse dropouts, Euro BB
- Seat Post
- AL integrated w/ saddle, 22.2 x 135mm
- Tape/Grips
- GT Statement
- Color
- Neon Yellow
- Size
- 17.5-inch
- Front Tire
- Tioga Power Block Front: 20 x 1-3/8" Rear: 20 x 1-1/8"
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.