Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
2021 GT Speed Series Pro
Previous used estimate
$373 - $383
Actual value depends on condition, size, and local demand.
Value Guide market data · 2021 GT Speed Series Pro
12-month projected trend
11%
Direction and magnitude, not judgment
vs. category average
4%
Drops faster than category avg
Price over time - 2021 GT Speed Series Pro
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Speed Series model years
Overview
About this bike
The Speed Series line of bikes feature our Speed Metal tubeset to keep the weight down while maintaining the stiffness wanted to take the hole shot. Equipped with disc brakes for fast stopping after the finish sprint and spec'd to give you the confidence to chase the top step out of the box. The Speed Series Pro (20.75-inch) is ideal for a rider 5'6"-5'10", the Pro XL (21.25-inch) for those who are 5'10"-6', and the Speed Series Pro XXL (21.75-inch) is for those who are 6' & over.
Specifications
- Subtype
- BMX
- Category
- BMX
- Component Fork
- GT BMX Pro Race, 100% Cr-Mo 1 1/8" Steerer, Tapered Legs, 3/8" Dropouts
- Component Size
- 20.75-inch, 21.25-inch, 21.75-inch
- Component Stem
- Promax Impact Top Load, 53mm
- Product Family
- Speed Series
- Component Chain
- KMC Z1 Narrow, 3/32"
- Component Color
- Gloss Neon Yellow & Black Fade/Multi Color
- Component Frame
- GT Speed Series MK7 Elite Race Design, 6061-T6 AL, Alloy Formed and Butted Speed Metal Tubes, AL CNC/Forged Quick Change Disc Dropout SyStem, BB86, Taper 1-1/8" to 1-1/2" Integrated H/T
- Component Tires
- Kenda Kompact Pro Race 20 x 1.75"
- Component Brakes
- Promax Hydro Disc Rear, 140mm Rotor (Rear Only)
- Component Pedals
- GT Low Profile FS Platform Design
- Component Saddle
- BOX Echelon
- Component Headset
- 1-1/8"-1.5" Taper Integrated Design, 45X45 Degree Sealed Bearings
- Component Crankset
- GT Forged Alloy 2pc., 175mm Arms, 24mm Hollow/ Cr-Mo Spindle, 44T AL CNC Chain Ring, Alloy Chain Ring Bolts
- Component Seat Post
- Integrated
- Component Chainrings
- 44T
- Component Handlebars
- GT Speed Cr-Mo 8.375"H x 29"W, 8° Sweep, 4° Up, Taper Cross Bar
- Component Tape Grips
- GT Statement Double Lock-on Grips
- Component Bottom Bracket
- Sealed BB86
- Tires
- Kenda Kompact Pro Race 20 x 1.75"
- Crankset
- GT Forged Alloy 2pc., 175mm Arms, 24mm Hollow/ Cr-Mo Spindle, 44T AL CNC Chain Ring, Alloy Chain Ring Bolts
- Pedals
- GT Low Profile FS Platform Design
- Bottom Bracket
- Sealed BB86
- Chain
- KMC Z1 Narrow, 3/32"
- Saddle
- BOX Echelon
- Headset
- 1-1/8"-1.5" Taper Integrated Design, 45X45 Degree Sealed Bearings
- Stem
- Promax Impact Top Load, 53mm
- Brakes
- Promax Hydro Disc Rear, 140mm Rotor (Rear Only)
- Chainrings
- 44T
- Fork
- GT BMX Pro Race, 100% Cr-Mo 1 1/8" Steerer, Tapered Legs, 3/8" Dropouts
- Frame
- GT Speed Series MK7 Elite Race Design, 6061-T6 AL, Alloy Formed and Butted Speed Metal Tubes, AL CNC/Forged Quick Change Disc Dropout SyStem, BB86, Taper 1-1/8" to 1-1/2" Integrated H/T
- Handlebars
- GT Speed Cr-Mo 8.375"H x 29"W, 8° Sweep, 4° Up, Taper Cross Bar
- Seat Post
- Integrated
- Tape/Grips
- GT Statement Double Lock-on Grips
- Color
- Gloss Neon Yellow & Black Fade/Multi Color
- Size
- 21.75-inch
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.