Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
2018 GT Mach One Pro
Previous used estimate
$109 - $113
Actual value depends on condition, size, and local demand.
Value Guide market data · 2018 GT Mach One Pro
12-month projected trend
1%
Direction and magnitude, not judgment
vs. category average
2%
Holds value better than category avg
Price over time - 2018 GT Mach One Pro
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Mach One model years
2021$174 - $179▲ 59% vs. 2018
2020$138 - $142▲ 26% vs. 2018
2019$124 - $128▲ 14% vs. 20182018$109 - $113Currently viewing
2017$109 - $1120% vs. 2018
2016$102 - $105▼ 7% vs. 2018
2015$99 - $102▼ 9% vs. 2018
2012$71 - $73▼ 35% vs. 2018
2011$71 - $73▼ 35% vs. 2018
2006$63 - $65▼ 42% vs. 2018
2005$63 - $65▼ 42% vs. 2018Compare Mach One Pro models
2 modelsChoose a different build or frame style to see its value.
Overview
About this bike
Breaking the barrier to racing BMX shouldn’t cost an arm and a leg. GT's Mach One Pro delivers race-ready specs at a wallet-friendly price to make sure anyone who wants to get into BMX can get on the track. The stiff and lightweight aluminum frame gets all the power from the pedals to the track with a euro bottom bracket for easy bearing changes and sealed reliability. Tubular chromoly cranks spin up lightweight alloy wheels with GT Wing tires delivering solid traction with low rolling resistance. A linear pull brake delivers all the stopping power you need, while GT Uni Pro saddle and GT Race bars keep you piloting with precision.
Specifications
- Subtype
- BMX
- Category
- BMX
- Component Fork
- GT BMX design, 1-1/8" steerer x 31.8mm Hi-Ten legs
- Component Hubs
- Steel body
- Component Size
- 20.6-inch
- Component Stem
- GT Top Load 1-1/8" aluminum, 50mm length
- Product Family
- Mach One
- Component Axles
- Front: 3/8" w/ 15mm nuts Rear: 3/8" w/ 15mm nuts
- Component Chain
- KMC Z410
- Component Color
- Goldproof Black
- Component Frame
- GT Mach One Race, 6061-T6 AL, Euro BB, Reverse dropouts
- Component Brakes
- Alloy linear pull, rear only
- Component Saddle
- GT Uni Pro padded
- Component Headset
- 1-1/8" Integrated design, 45X45 degree sealed bearings
- Component Crankset
- GT Power Series Tubular Cr-Mo 3pc, 175mm Arms, Cold Forged Cr-Mo 19mm x 8-spline
- Component Handlebar
- GT Race, steel, 8.25"H x 29"W, 11 degree back, 3 degree up, 19mm cross bar
- Component Seat Post
- AL integrated w/ saddle, 27.2 x 250mm
- Component Chainrings
- 38T steel
- Component Front Tire
- GT Wing, 20 x 1.75"
- Component Tape Grips
- GT Statement
- Component Brake Levers
- Alloy
- Component Bottom Bracket
- External Euro sealed bearings
- Hubs
- Steel body
- Crankset
- GT Power Series Tubular Cr-Mo 3pc, 175mm Arms, Cold Forged Cr-Mo 19mm x 8-spline
- Bottom Bracket
- External Euro sealed bearings
- Chain
- KMC Z410
- Saddle
- GT Uni Pro padded
- Handlebar
- GT Race, steel, 8.25"H x 29"W, 11 degree back, 3 degree up, 19mm cross bar
- Headset
- 1-1/8" Integrated design, 45X45 degree sealed bearings
- Stem
- GT Top Load 1-1/8" aluminum, 50mm length
- Axles
- Front: 3/8" w/ 15mm nuts Rear: 3/8" w/ 15mm nuts
- Brake Levers
- Alloy
- Brakes
- Alloy linear pull, rear only
- Chainrings
- 38T steel
- Fork
- GT BMX design, 1-1/8" steerer x 31.8mm Hi-Ten legs
- Frame
- GT Mach One Race, 6061-T6 AL, Euro BB, Reverse dropouts
- Seat Post
- AL integrated w/ saddle, 27.2 x 250mm
- Tape/Grips
- GT Statement
- Color
- Goldproof Black
- Size
- 20.6-inch
- Front Tire
- GT Wing, 20 x 1.75"
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.