Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
1999 GT Mach One (01)
Previous used estimate
$89 - $92
Actual value depends on condition, size, and local demand.
Value Guide market data · 1999 GT Mach One (01)
12-month projected trend
— %
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 1999 GT Mach One (01)
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Mach model years
2020$87 - $90▼ 2% vs. 1999
2019$75 - $77▼ 16% vs. 1999
2018$90 - $93▲ 1% vs. 19992017$82 - $84▼ 8% vs. 1999
2016$68 - $70▼ 24% vs. 1999
2015$42 - $43▼ 53% vs. 1999
2014$48 - $49▼ 46% vs. 1999
2006$53 - $54▼ 41% vs. 1999
2004$63 - $65▼ 29% vs. 1999
2003$63 - $65▼ 29% vs. 19992002$69 - $71▼ 23% vs. 19991999$89 - $92Currently viewing
1998$91 - $94▲ 2% vs. 1999
1997$120 - $123▲ 34% vs. 19991996$119 - $123▲ 34% vs. 1999Compare Mach One (01) models
1 modelsChoose a different build or frame style to see its value.
Overview
About this bike
1999 GT Mach One (01) value depends on condition, original build, service history, and current buyer demand.
Specifications
- Category
- BMX
- Component Hubs
- GT Mohawk
- Component Rims
- Weinmann ZAC-X
- Product Family
- Mach
- Component Chain
- 1/2 x 1/8inch
- Component Tires
- Front: 20 x 2.125inch GT AA Pro, Rear: 20 x 1.75inch GT AA Pro
- Component Pedals
- GT aluminum platform
- Component Saddle
- GT Drop Nose
- Component Headset
- 1 1/8inch threadless Aheadset
- Component Brakeset
- Tektro linear-pull rear brakes, Tektro linear-pull rear levers
- Component Cassette
- 1-speed, 16 teeth
- Component Crankset
- GT 1-piece chromoly
- Component Seatpost
- GT aluminum micro-adjust
- Component Handlebar
- GT
- Component Extensions
- Not applicable
- Component Rear Shock
- Not applicable
- Component Spoke Brand
- 2.0mm straight gauge
- Component Shift Levers
- Not applicable
- Component Fork Material
- Chromoly, unicrown crown
- Component Spoke Nipples
- Brass nipples
- Component Bottom Bracket
- One piece
- Component Handlebar Stem
- GT Piston
- Component Component Group
- Not applicable
- Component Fork Brand Model
- GT
- Component Frame Construction
- Welded
- Component Frame Tubing Material
- Chromoly
- Frame Construction
- Welded
- Frame Tubing Material
- Chromoly
- Fork Brand & Model
- GT
- Fork Material
- Chromoly, unicrown crown
- Rear Shock
- Not applicable
- Hubs
- GT Mohawk
- Rims
- Weinmann ZAC-X
- Tires
- Front: 20 x 2.125inch GT AA Pro, Rear: 20 x 1.75inch GT AA Pro
- Spoke Brand
- 2.0mm straight gauge
- Spoke Nipples
- Brass nipples
- Component Group
- Not applicable
- Brakeset
- Tektro linear-pull rear brakes, Tektro linear-pull rear levers
- Shift Levers
- Not applicable
- Crankset
- GT 1-piece chromoly
- Pedals
- GT aluminum platform
- Bottom Bracket
- One piece
- Chain
- 1/2 x 1/8inch
- Seatpost
- GT aluminum micro-adjust
- Saddle
- GT Drop Nose
- Handlebar
- GT
- Extensions
- Not applicable
- Handlebar Stem
- GT Piston
- Headset
- 1 1/8inch threadless Aheadset
- Cassette
- 1-speed, 16 teeth
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.