GT Mach One Pro

2020 BMX Manufacturer page

Last known price: $375

Prices shown first for United States
Suspension: Rigid
Wheels: 20″
Drivetrain: 1 × 1 36t / 14t
Gear range: 100%
Frame: Aluminum
Brakes: Rim brake

Not published by the manufacturer

Sizes and geometry

Components

8 of 20 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

GT Mach One Race, 6061-T6 AL, Euro BB, Reverse Dropouts, 1-1/8" Integrated H/T Not identified

Suspension

1 part

Fork
- GT

Drivetrain

4 parts

Bottom bracket

Euro Sealed Bearings Not identified
Cassette

14T freewheel Not identified
Chain
- KMC S1 1 speed
Crankset
- GT 36t

Brakes

2 parts

Brake levers

Alloy V-type Not identified
Brakes

Alloy V-type Not identified

Wheels and tires

5 parts

Front hub

Steel Body, 36h, 3/8" Axle Not identified
Rear hub

Steel Flip Flop Thread-On Body, Freewheel, 36h, 3/8" Axle Not identified
Rims

Alloy Single Wall, 36h Not identified
Spokes

Stainless Spokes, 14g Not identified
Tires
- GT

Cockpit and contact points

7 parts

Grips
- GT
Handlebar
- GT
Headset

1-1/8" Integrated Design, 45X45 Degree Sealed Bearings Not identified
Pedals
- GT
Saddle

Railed Not identified
Seatpost

Alloy, 25.4mm x 200mm Not identified
Stem
- GT

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Steel

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 36
Largest chainring: 36
Rear sprockets: 1
Smallest sprocket: 14
Largest sprocket: 14
Lowest gear: 51.4 in
Highest gear: 51.4 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: No shifting

Additional specifications

Tire width: 1.75″
Wheel material: Aluminum
Wheel size: 20″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 19.7 km/h
Highest gear: 19.7 km/h

Total gear range 100%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 51.4–51.4 gear inches

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2020 builds

Differences across 2020 builds
Specification	This bicycle GT Mach One Pro	GT Mach One Expert	GT Mach One Freewheel 16	GT Mach One Junior	GT Mach One Mini	GT Mach One Pro 24
Frame
Fork material	Steel	Steel	Aluminum	Steel	Steel	Steel
Drivetrain
Smallest sprocket	14	14	14	14	14	16
Largest sprocket	14	14	14	14	14	16
Lowest gear	51.4 in	51.4 in	41.1 in	51.4 in	51.4 in	54.0 in
Highest gear	51.4 in	51.4 in	41.1 in	51.4 in	51.4 in	54.0 in
Other specifications
Tire width	1.75″	Not informed	1.75″	Not informed	Not informed	2.1″
Wheel size	20″	20″	16″	20″	20″	24″