Lowest0.79:1
Highest3.82:1
Total range486%
Estimated speed At 90 RPM
Lowest gear
Highest gear
Uses front tire 26×1.95; rear size isn’t listed.
Velopedia Bicycle Archive
1995 ProFlex 555
Original specifications: Shimano STX drivetrain · 26" wheels · 28.5 lb published weight.
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No archive photo is available for this record.
At a glance
Archive #32583- Model year
- 1995
- Category
- Mountain
- Original MSRP
- $1,000.00
- Sizes
- 14", 16", 18", 20"
- Colors
- Leaf green, Metallic Plum
- Weight
- 28.5 lb
- Geometry
- Legacy reference
- In this record
- 25 specifications · original MSRP · geometry
Original buildAlcoa 7005 aluminum · Shimano STX · 26" wheels
Frameset
| Frame Construction | Welded aluminum |
|---|---|
| Frame Material | Alcoa 7005 aluminum |
| Fork | Girvin ATF |
| Fork Material | Aluminum, unicrown crown |
Drivetrain
| Component Group | Shimano STX |
|---|---|
| Shifters | Shimano STX RapidFire Plus |
| Front Derailleur | Shimano STX, bottom-pull/clamp-on 31.8 mm |
| Rear Derailleur | Shimano STX-RC |
| Crankset | Sugino Impel 350, 22/32/42 teeth |
| Rear Cogs | 7-speed, 11 - 28 teeth |
| Chain | Shimano CN-IG50, 1/2 x 3/32" |
| Pedals | Wellgo LU-897 |
Brakes
| Brakes | Shimano STX M-System brakes, Shimano STX levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" Dia-Compe Aheadset |
|---|---|
| Handlebar | Hsin Lung alloy |
| Handlebar Extensions | Girvin alloy |
| Stem | Hsin Lung chromoly |
| Saddle | Vetta SL |
| Seatpost | Polygon PM-301, 27.2 mm diameter |
Wheels & Tires
| Hubs | Shimano STX |
|---|---|
| Rims | Mavic M400 |
| Spokes | Stainless steel, 1.8 mm straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | 26 x 1.95" Tioga Psycho |
| Wheel Size | 26" 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 · 5 measurements
| Measurement | Legacy reference |
|---|---|
| Top tube | 580 mm |
| Head-tube angle | 71° |
| Seat-tube angle | 74° |
| Chainstay / rear center | 429 mm |
| Wheelbase | 1068 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
Polygon PM-301
27.2 mm diameter
Retailer offers
Race Face Ride XC Seatpost Black, 27.2x375mm
Replacement option
26 x 1.95" Tioga Psycho
Replacement search: 26x1.95 bicycle tire Before ordering: Check rim type and tire clearance.
More parts (5)Fewer parts
Wellgo LU-897
Shimano STX-RC
Shimano STX RapidFire Plus
Mavic M400
Shimano STX
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
- 26 x 1.95" Tioga Psycho
- Drivetrain
- 7-speed
- Seatpost diameter
- 27.2 mm
Equipment inspection checks 13 checks based on 6 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: Welded aluminum · Fork: Girvin ATF · Aluminum, unicrown crown
Suspension
Evaluate the suspension →Archived: Fork: Girvin ATF
Drivetrain
Check drivetrain wear →Archived: Group: Shimano STX · Shifters: Shimano STX RapidFire Plus · Front derailleur: Shimano STX, bottom-pull/clamp-on 31.8 mm · Rear derailleur: Shimano STX-RC · Crankset: Sugino Impel 350, 22/32/42 teeth · Rear cogs: 7-speed, 11 - 28 teeth · Chain: Shimano CN-IG50, 1/2 x 3/32"
Brakes
Inspect the brakes →Archived: Brakes: Shimano STX M-System brakes, Shimano STX levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 26" wheels · Rims: Mavic M400 · Hubs: Shimano STX · Front tire: 26 x 1.95" Tioga Psycho
Controls and contact points
Archived: Headset: 1 1/8" Dia-Compe Aheadset · Handlebar: Hsin Lung alloy · Stem: Hsin Lung chromoly · Seatpost: Polygon PM-301, 27.2 mm diameter · Saddle: Vetta SL · Pedals: Wellgo LU-897
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.