Velopedia Bicycle Archive

2009 GT Power Series Expert

Original specifications: BMX drivetrain · 20" wheels.

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At a glance

Archive #18803

Model year: 2009
Category: BMX
Original MSRP: $469.99
Sizes: 19.75" TT
Colors: White/Black
In this record: 24 specifications · original MSRP

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Identification clues

2009 archived details

Published colors: White/Black
Frame: 6061-T6 aluminum
Original equipment: BMX

Clues, not proof of model year. Colors vary and components may have been replaced.

Original build6061-T6 aluminum · BMX · 20" wheels

Historical catalog variants

Archived sizes and colors

1 item record

Item-level catalog entries recovered from Velopedia’s original bicycle archive. They document how this model was listed historically; they do not identify the frame size associated with legacy reference geometry or indicate current availability.

Published sizes

19.75" TT

Published colors

White/Black

View 1 archived size/color combination

Size	Color
19.75" TT	White/Black

Historical catalog evidence. Exact specifications and naming may vary by market, production run or manufacturer revision.

Frameset

Frame Construction	TIG-welded
Frame Material	6061-T6 aluminum
Fork	GT BMX
Fork Material	Aluminum/chromoly steerer, unicrown crown

Drivetrain

Component Group	BMX
Crankset	GT Tubular Cr-Mo 3pc., 42 teeth
Bottom Bracket	Euro Sealed
Cassette	Freewheel
Rear Cogs	1-speed, 13, 14, 15, 16, 17, 18 teeth
Chain	KMC Z610
Pedals	Jr. BMX platform design, aluminum body, cr-mo axle

Brakes

Brakes	Tektro 926AL Mini-V rear brakes, Tektro 316A rear levers

Cockpit & Contact Points

Headset	1 1/8" FSA Orbit IS-2
Handlebar	GT BMX aluminum
Handlebar Extensions	Not included
Stem	GT BMX Race
Saddle	GT Mini BMX
Seatpost	Aluminum, 22.2mm diameter

Wheels & Tires

Hubs	Front: GT aluminum sealed, Rear: Joy Tech BMX cassette
Rims	Alex DA-22, 32-hole
Spokes	15ga. (1.8mm)
Spoke Nipples	Aluminum nipples
Front Tire	20 x 1 3/8" Kenda Small Block Eight
Wheel Size	20" wheels

Gearing

Original gearing is incomplete. Enter your setup to calculate ratios and cadence speeds.

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Your changes apply to this calculation. The archived build stays unchanged.

Gears Drivetrain

Front teeth Smallest rear teeth Largest rear teeth

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Rear tire marking

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

Rim diameter (BSD, mm) Tire width (mm)

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Cadence (RPM) Speed units

Gear, dimension and cadence changes update results automatically.

Gearing comparison
Measure	Original	Your setup
Lowest ratio	—	—
Highest ratio	—	—
Total range	—	—
Lowest-gear speed	—	—
Highest-gear speed	—	—

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

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Original specifications

Seatpost · Original

Aluminum

22.2mm diameter

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Headset · Original

1 1/8" FSA Orbit IS-2

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Rims · Original

Alex DA-22

32-hole

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Parts and service referenceQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Front tire: 20 x 1 3/8" Kenda Small Block Eight
Drivetrain: 1-speed
Seatpost diameter: 22.2 mm
Bottom bracket / shell: Euro Sealed

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

2009 GT Power Series Expert