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2023 GT

Speed Series Expert

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

$690
FrameAluminum
SuspensionRigid
ForkSteel
Wheels20″ Aluminum
DrivetrainSingle-speed
BrakesPromax Rim
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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)

16 mph

Speed Series Expert

Highest gear

(descending)

Sizing
Expert

4'6" – 5'5"

Rider Fit Notes

None yet.

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Geometry
Specs
Build
Frame

GT Speed Series MK7 Junior Race, 6061-T6 AL, Alloy Formed and Butted Speed Metal Tubes, Reverse Dropouts, Euro BB, 1-1/8" Integrated H/T

ColorBlack

Fork

GT BMX Expert Race, 100% Cr-Mo 1-1/8" Steerer, 312mm A/C, 3/8" Dropouts

Bottom Bracket

EB24 Sealed Bearings

Headset

1-1/8" Sealed Integrated (41.8 x 45)

Stem

GT Top Load, 40mm

Handlebar

GT Speed Cr-Mo 6.5"H x 26"W, 8° Sweep, 4° Up, Taper Cross Bar

Saddle

BOX Echelon

Seatpost

Integrated

TypeRigid

Pedals

GT Mini Platform

Grips

GT Statement

Groupset
Crank

GT Forged Alloy 2pc. 165mm Arms, 24mm Hollow/ Alloy Spindle, 104 BCD 42T AL CNC Chain Ring, Alloy Chain Ring Bolts

Cassette

16T Cog

Chain

KMC Z1 Narrow, 3/32"

Brakes

Promax MV-87, 85mm Cold Forged AL Arms, Mini V-Type

TypePromax Rim

Brake Levers

Alloy V-type

Wheels
Rims

Alloy Double Wall, 28h

Spokes

Stainless Steel, 14g

Front Hub

GT Speed Series, Alloy Sealed, 3/8" Female Allen Bolt

Rear Hub

GT Speed Series, Alloy Sealed 3/8" Female Allen Bolt Cassette

Tires

Front: Kenda Kompact Pro Race 1-3/8", Rear: Kenda Kompact Pro Race 1-3/8"

Rider Notes
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First added October 2

Last updated May 25

Not listed for 743 days