Ratio2.63:1
Estimated speed At 90 RPM
Gear
Uses front tire 20×2.1; rear size isn’t listed.
Velopedia Bicycle Archive
2004 GT Compe
Original specifications: 20" wheels · legacy reference geometry.
Planning to sell? Draft your listing
At a glance
Archive #31436- Model year
- 2004
- Category
- BMX
- Original MSRP
- $209.99
- Sizes
- One
- Colors
- Red, Silver
- Geometry
- Legacy reference
- In this record
- 22 specifications · archived image · original MSRP · geometry
Model history 9 other years
Browse other years
Compare side by side
Identification clues
2004 archived details
- Published colors
- Red, Silver
- Frame
- Chromoly seat tube/hi-tensile steel
- Original equipment
- N/A
Clues, not proof of model year. Colors vary and components may have been replaced.
Original buildChromoly seat tube/hi-tensile steel · 20" wheels
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | Chromoly seat tube/hi-tensile steel |
| Fork | GT |
| Fork Material | Hi-tensile steel, unicrown crown |
Drivetrain
| Crankset | 3-piece aluminum, 42 teeth |
|---|---|
| Bottom Bracket | Loose ball |
| BB Shell Width | American |
| Rear Cogs | 1-speed, 16 teeth |
| Chain | KMC Z410, 1/2 x 1/8" |
| Pedals | GT BMX Design Aluminum |
Brakes
| Brakes | Tektro 907A U-brake brakes, Tektro 289A levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless Victor VP-A74F w/SST Oryg |
|---|---|
| Handlebar | GT 4-Piece |
| Stem | GT Piston |
| Saddle | GT Jr Jump, 9mm rails |
| Seatpost | Aluminum, 25.4mm diameter |
Wheels & Tires
| Hubs | Steel, 14mm |
|---|---|
| Rims | Alex G303, 48-hole |
| Spokes | Stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | 20 x 2.10" GT Air Bags |
| Wheel Size | 20" wheels |
No specifications match. Try a component name or clear your search.
Geometry
Historical measurements. Frame size unknown.
Reference drawing
Size
Measurement
Measurement
—
Select an available measurement to locate it on the frame.
All geometry measurementsLegacy reference · 4 measurements
| Measurement | Legacy reference |
|---|---|
| Top tube | 495.3 mm |
| Head-tube angle | 73° |
| Seat-tube angle | 68° |
| Chainstay / rear center | 355.6 mm |
Frame size not recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
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.
Try your current gearingChanged tires or gears? Calculate your setup.
Your changes apply to this calculation. The archived build stays unchanged.
Gearing results
| 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
Find replacement parts
20 x 2.10" GT Air Bags
Replacement search: 20x2.1 bicycle tire Before ordering: Check rim type and tire clearance.
Aluminum
25.4mm diameter
Alex G303
48-hole
Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.
Parts and service referenceQuick reference before buying parts
Archived specifications for reference. Check the fitted parts before ordering.
- Front tire
- 20 x 2.10" GT Air Bags
- Drivetrain
- 1-speed
- Seatpost diameter
- 25.4 mm
- Bottom bracket / shell
- Loose ball · American
Equipment inspection checks 10 checks based on 5 archived component groups Open equipment checksClose equipment checks
Checks selected from the archived equipment. Confirm what is fitted today. This is not a complete safety inspection; use the full inspection guide before test riding.
Full used-bike inspection guide →
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: GT · Hi-tensile steel, unicrown crown
Drivetrain
Check drivetrain wear →Archived: Crankset: 3-piece aluminum, 42 teeth · Bottom bracket: Loose ball · Rear cogs: 1-speed, 16 teeth · Chain: KMC Z410, 1/2 x 1/8"
Brakes
Inspect the brakes →Archived: Brakes: Tektro 907A U-brake brakes, Tektro 289A levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 20" wheels · Rims: Alex G303, 48-hole · Hubs: Steel, 14mm · Front tire: 20 x 2.10" GT Air Bags
Controls and contact points
Archived: Headset: 1 1/8" threadless Victor VP-A74F w/SST Oryg · Handlebar: GT 4-Piece · Stem: GT Piston · Seatpost: Aluminum, 25.4mm diameter · Saddle: GT Jr Jump, 9mm rails · Pedals: GT BMX Design Aluminum
Have you owned this model?Help preserve its real-world history by sharing your owner experience.
Share the details that would help another rider understand how this model fits, rides and holds up over time. Velopedia reviews every contribution before publication.
Already contributed? Send me a fresh private edit link
For privacy, Velopedia shows the same confirmation whether or not an experience exists.
Checking current listings…
Find this bike on eBay
Search eBay US; check the model year, size and installed components. We may earn a commission from purchases.
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.