Lowest0.93:1
Highest3.69:1
Total range396%
Estimated speed At 90 RPM
Lowest gear
Highest gear
Uses front tire 700C×38; rear size isn’t listed.
Velopedia Bicycle Archive
1993 ProFlex 253 (02)
Original specifications: Shimano Altus C10/Gripshift drivetrain · 700c wheels · 28.5 lb published weight.
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No archive photo is available for this record.
At a glance
Archive #41363- Model year
- 1993
- Category
- Hybrid
- Original MSRP
- $549.00
- Sizes
- 16, 18, 20
- Weight
- 28.5 lb
- Geometry
- Legacy reference
- In this record
- 20 specifications · original MSRP · geometry
Original buildTange Infinity · Shimano Altus C10/Gripshift · 700c wheels
Frameset
| Frame Construction | TIG-welded steel |
|---|---|
| Frame Material | Tange Infinity |
| Fork | Tange 807R |
Drivetrain
| Component Group | Shimano Altus C10/Gripshift |
|---|---|
| Shifters | Gripshift |
| Front Derailleur | Shimano Altus C10 |
| Rear Derailleur | Shimano Altus C10 |
| Crankset | Shimano Altus C10, 28/38/48 teeth |
| Rear Cogs | 7-speed, 13 - 30 teeth |
| Chain | KMC HG-50 |
| Pedals | Offroad |
Brakes
| Brakes | Shimano Altus C10 brakes, levers |
|---|
Cockpit & Contact Points
| Handlebar | Offroad |
|---|---|
| Stem | Girvin Cromoly Flexstem |
| Saddle | Vetta Gel Lite |
| Seatpost | Offroad |
Wheels & Tires
| Hubs | Shimano Altus C10 |
|---|---|
| Rims | Sun Metal L-17, 36-hole |
| Front Tire | 700 x 38c Avocet Cross |
| Wheel Size | 700c 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 · 6 measurements
| Measurement | Legacy reference |
|---|---|
| Top tube | 574 mm |
| Head-tube angle | 72° |
| Seat-tube angle | 72° |
| Chainstay / rear center | 431.8 mm |
| Wheelbase | 1066.8 mm |
| Fork offset / rake | 40.6 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
KMC HG-50
700 x 38c Avocet Cross
Replacement search: 700cx38 bicycle tire Before ordering: Check rim type and tire clearance.
Shimano Altus C10
28/38/48 teeth
More parts (3)Fewer parts
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
- 700 x 38c Avocet Cross
- Drivetrain
- 7-speed
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 steel · Fork: Tange 807R
Drivetrain
Check drivetrain wear →Archived: Group: Shimano Altus C10/Gripshift · Shifters: Gripshift · Front derailleur: Shimano Altus C10 · Rear derailleur: Shimano Altus C10 · Crankset: Shimano Altus C10, 28/38/48 teeth · Rear cogs: 7-speed, 13 - 30 teeth · Chain: KMC HG-50
Brakes
Inspect the brakes →Archived: Brakes: Shimano Altus C10 brakes, levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 700c wheels · Rims: Sun Metal L-17, 36-hole · Hubs: Shimano Altus C10 · Front tire: 700 x 38c Avocet Cross
Controls and contact points
Archived: Handlebar: Offroad · Stem: Girvin Cromoly Flexstem · Seatpost: Offroad · Saddle: Vetta Gel Lite · Pedals: Offroad
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.