Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
1998 GT Mach One (01)
Previous used estimate
$91 - $94
Actual value depends on condition, size, and local demand.
Value Guide market data · 1998 GT Mach One (01)
12-month projected trend
— %
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 1998 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▼ 4% vs. 1998
2019$75 - $77▼ 18% vs. 1998
2018$90 - $93▼ 1% vs. 19982017$82 - $84▼ 10% vs. 1998
2016$68 - $70▼ 25% vs. 1998
2015$42 - $43▼ 54% vs. 1998
2014$48 - $49▼ 48% vs. 1998
2006$53 - $54▼ 42% vs. 1998
2004$63 - $65▼ 31% vs. 1998
2003$63 - $65▼ 31% vs. 19982002$69 - $71▼ 24% vs. 19981999$89 - $92▼ 2% vs. 19981998$91 - $94Currently viewing
1997$120 - $123▲ 31% vs. 19981996$119 - $123▲ 31% vs. 1998Compare Mach One (01) models
1 modelsChoose a different build or frame style to see its value.
Overview
About this bike
1998 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 4019
- 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 platforms
- Component Saddle
- GT Drop Nose
- Component Headset
- 1 1/8inch threadless Aheadset SE-1
- Component Brakeset
- Tektro linear-pull rear brakes, Tektro levers
- Component Cassette
- 1-speed, 16 teeth
- Component Crankset
- GT 1-piece chromoly, 43 teeth
- Component Seatpost
- GT aluminum micro-adjust
- Component Handlebar
- GT Low Pro
- Component Extensions
- Not applicable
- Component Rear Shock
- Not applicable
- Component Spoke Brand
- Steel, 2.0mm straight gauge
- Component Shift Levers
- Not applicable
- Component Fork Material
- Chromoly, unicrown crown
- Component Bb Shell Width
- American
- Component Handlebar Stem
- GT Piston
- Component Component Group
- Not applicable
- Component Fork Brand Model
- GT
- Component Frame Construction
- TIG-welded
- Component Frame Tubing Material
- 4130 chromoly
- Frame Construction
- TIG-welded
- Frame Tubing Material
- 4130 chromoly
- Fork Brand & Model
- GT
- Fork Material
- Chromoly, unicrown crown
- Rear Shock
- Not applicable
- Hubs
- GT Mohawk
- Rims
- Weinmann Zac 4019
- Tires
- Front: 20 x 2.125inch GT AA Pro, Rear: 20 x 1.75inch GT AA Pro
- Spoke Brand
- Steel, 2.0mm straight gauge
- Component Group
- Not applicable
- Brakeset
- Tektro linear-pull rear brakes, Tektro levers
- Shift Levers
- Not applicable
- Crankset
- GT 1-piece chromoly, 43 teeth
- Pedals
- GT aluminum platforms
- BB Shell Width
- American
- Chain
- 1/2 x 1/8inch
- Seatpost
- GT aluminum micro-adjust
- Saddle
- GT Drop Nose
- Handlebar
- GT Low Pro
- Extensions
- Not applicable
- Handlebar Stem
- GT Piston
- Headset
- 1 1/8inch threadless Aheadset SE-1
- 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.