Ratio2.79:1
Estimated speed At 90 RPM
Gear
Uses front tire 20×2.1; rear size isn’t listed.
Velopedia Bicycle Archive
At a glance
Archive #38633- Model year
- 2003
- Category
- BMX
- Original MSRP
- $319.99
- Sizes
- One
- Colors
- Electric Green Mica, Vivid Red
- In this record
- 21 specifications · archived image · original MSRP
Model history 2 other years
Browse other years
Compare side by side
Identification clues
2003 archived details
- Published colors
- Electric Green Mica, Vivid Red
- Frame
- Chromoly main triangle/hi-tensile steel rear stays
- Original equipment
- N/A
Clues, not proof of model year. Colors vary and components may have been replaced.
Original buildChromoly main triangle/hi-tensile steel rear stays · 20" wheels
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | Chromoly main triangle/hi-tensile steel rear stays |
| Fork | GT |
| Fork Material | Chromoly, unicrown crown |
Drivetrain
| Crankset | GT 3-piece chromoly, 39 teeth |
|---|---|
| BB Shell Width | American |
| Rear Cogs | 1-speed, 14 teeth |
| Chain | KMC 410, 1/2 x 3/16" |
| Pedals | GT Johnson design |
Brakes
| Brakes | Tektro FX-11 U-brake brakes, Tektro 273A levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless Tange-Seiki TGMX |
|---|---|
| Handlebar | GT Bestwick 4-piece |
| Stem | GT Piston |
| Saddle | GT Launch Pad |
| Seatpost | Chromoly micro-adjust |
Wheels & Tires
| Hubs | Aluminum, 14mm axle |
|---|---|
| Rims | Alex DX-2418, 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.
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.
Alex DX-2418
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
- Bottom bracket / shell
- 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 · Chromoly, unicrown crown
Drivetrain
Check drivetrain wear →Archived: Crankset: GT 3-piece chromoly, 39 teeth · Rear cogs: 1-speed, 14 teeth · Chain: KMC 410, 1/2 x 3/16"
Brakes
Inspect the brakes →Archived: Brakes: Tektro FX-11 U-brake brakes, Tektro 273A levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 20" wheels · Rims: Alex DX-2418, 48-hole · Hubs: Aluminum, 14mm axle · Front tire: 20 x 2.10" GT Air Bags
Controls and contact points
Archived: Headset: 1 1/8" threadless Tange-Seiki TGMX · Handlebar: GT Bestwick 4-piece · Stem: GT Piston · Seatpost: Chromoly micro-adjust · Saddle: GT Launch Pad · Pedals: GT Johnson design
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.