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2020 GT

Mach One Pro

A 20″ aluminum frame bmx bike with rim brakes.
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Manufacturer Price

$375
FrameAluminum
SuspensionRigid
ForkSteel
Wheels20″ Aluminum
DrivetrainSingle-speed
BrakesRim
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

15 mph

Mach One Pro

Highest gear

(descending)

Geometry
Specs
Build
Frame

GT Mach One Race, 6061-T6 AL, Euro BB, Reverse Dropouts, 1-1/8" Integrated H/T

Fork

GT BMX design, 1-1/8" Steerer x 31.8mm blades, Hi-Ten Blades

Bottom Bracket

Euro Sealed Bearings

Headset

1-1/8" Integrated Design, 45X45 Degree Sealed Bearings

Stem

GT Top Load 1-1/8" Aluminum, 50mm

Handlebar

GT Race, Steel, 8.25"H x 29"W, 11° Back, 3° Up, 19mm O.D. Cross Bar

Saddle

Railed

Seatpost

Alloy, 25.4mm x 200mm

TypeRigid

Pedals

GT Low Profile FS Platform Design, PP Material, Boron Axle

Grips

GT Statement

Groupset
Crank

GT Power Series Tubular Cr-Mo 3pc. 175mm Arms, 19mm x 8T Splined Spindle, GT 36T Steel Sprocket

Cassette

14T freewheel

Chain

KMC S1

Brakes

Alloy V-type

TypeRim

Brake Levers

Alloy V-type

Wheels
Rims

Alloy Single Wall, 36h

Spokes

Stainless Spokes, 14g

Front Hub

Steel Body, 36h, 3/8" Axle

Rear Hub

Steel Flip Flop Thread-On Body, Freewheel, 36h, 3/8" Axle

Tires

GT Wing, 20 x 1.75"

Rider Notes
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First added October 20

Last updated June 23

Not listed for 2,166 days