- Frame
- Chromoly
- Brakes
- Chang Star 850AGP brakes, Lee Chi 315A-1 levers
Velopedia Bicycle Archive
Compare Bicycles
Compare published geometry, gearing and specifications for up to three bicycles.
- Frame
- 4130 chromoly
- Brakes
- Lee Chi linear-pull rear brakes, Lee Chi ProMax rear levers
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1 of 2 bicycles
At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
No key difference could be established from the available data. Check the full table for the details.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Ratio2.75:1
Estimated speed at 90 RPMGear
Uses front tire 20×1.75; rear size isn’t listed.
Ratio2.75:1
Estimated speed at 90 RPMGear
Rear tire: 20×1.75.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.
Specification
1996 GT Mach One
2000 GT Mach One
Overview
Model Year
1996
2000
Brand
GT
GT
Model
Mach One
Mach One
Bicycle Type
BMX
BMX
Original MSRP
$344.99
$315.00
Colors
Black, Chrome-Plated, Dark Blue
Black/Glitter Orange, Chrome-Plated, Hot Rod Blue
Sizes
Boys
—
Weight
—
—
Frameset
Frame Construction
Welded steel
TIG-welded
Frame Material
Chromoly
4130 chromoly
Fork
GT
GT
Fork Material
Chromoly, unicrown crown
Chromoly, unicrown crown
Drivetrain
Crankset
GT Power Series 1-piece chromoly, 44 teeth
GT 3-piece chromoly, 44 teeth
Bottom Bracket
GT
Three piece, sealed
BB Shell Width
68mm Threadless
—
Rear Cogs
1-speed, 16 teeth
1-speed, 16 teeth
Chain
KMC 410, 1/2 x 1/8"
KMC, 1/2 x 3/32"
Pedals
GT alloy platforms
GT aluminum platform
Brakes
Brakes
Chang Star 850AGP brakes, Lee Chi 315A-1 levers
Lee Chi linear-pull rear brakes, Lee Chi ProMax rear levers
Cockpit & Contact Points
Headset
1 1/8" threadless Dia-Compe Kontak Aheadset ST-2
1 1/8" threadless Aheadset SX-1
Handlebar
GT BMX Expert
GT
Handlebar Extensions
—
Not included
Stem
GT alloy
GT Piston
Saddle
GT Drop Nose
GT
Seatpost
GT chromoly micro-adjust, 25.4 mm diameter
GT aluminum micro-adjust, 26.0mm diameter
Wheels & Tires
Hubs
—
GT 2000
Rims
Weinmann 4019, 36-hole
Weinmann ZAC-X, 36-hole
Spokes
Steel, 2.0mm straight gauge
2.0mm
Spoke Nipples
Brass nipples
Brass nipples
Front Tire
20 x 1.75" GT Megabite
20 x 2.125" GT Brody
Rear Tire
—
20 x 1.75" GT Brody
Wheel Size
20" wheels
20" wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
73°
73°
Seat-tube angle
69.5°
70°
Chainstay / rear center
368.3 mm
357.9 mm
Wheelbase
886.5 mm
935.7 mm
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run. Legacy reference geometry is model-level historical data whose corresponding frame size is not identified; compare those dimensions as reference values rather than size-normalized fit data.