Ratio2.78:1
Estimated speed At 90 RPM
Gear
Rear tire: 20×1.95.
Velopedia Bicycle Archive
2009 Hoffman Bikes Scarab IL
Original specifications: BMX drivetrain · 20" wheels · 28.5 lb published weight.
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At a glance
Archive #19156- Model year
- 2009
- Category
- BMX
- Sizes
- 20.5" TT
- Colors
- Bright Green, Jeweld Violet
- Weight
- 28.5 lb
- In this record
- 22 specifications
Model history 1 other year
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Identification clues
2009 archived details
- Published colors
- Bright Green, Jeweld Violet
- Frame
- Chromoly main triangle
- Original equipment
- BMX
Clues, not proof of model year. Colors vary and components may have been replaced.
Original buildChromoly main triangle · BMX · 20" wheels
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | Chromoly main triangle |
| Fork | Hoffman |
| Fork Material | Chromoly, unicrown crown |
Drivetrain
| Component Group | BMX |
|---|---|
| Crankset | 3 Piece Tubular Chromoly, 25 teeth |
| Bottom Bracket | Mid sealed BB |
| Cassette | Cassette driver |
| Rear Cogs | 1-speed, 9 teeth |
| Chain | KMC 410 |
| Pedals | Alloy Platform |
Brakes
| Brakes | Tektro 907 U-brake rear brakes, Tektro 289 rear levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" integrated |
|---|---|
| Handlebar | HB 2-piece |
| Handlebar Extensions | Not included |
| Saddle | HB Repeater Circle Pivotal |
| Seatpost | Pivotal alloy, 25.4mm diameter |
Wheels & Tires
| Hubs | Front: Alloy 3/8", Rear: Sealed 14mm cassette |
|---|---|
| Rims | Front: Jalco, Rear: Alienation PBR, 36-hole |
| Front Tire | 20 x 2.125" Kenda K-Rad |
| Rear Tire | 20 x 1.95" HB Skidmark |
| Wheel Size | 20" wheels |
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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
Pivotal alloy
25.4mm diameter
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Parts and service referenceQuick reference before buying parts
Archived specifications for reference. Check the fitted parts before ordering.
- Front tire
- Front: 20 x 2.125" Kenda K-Rad, Rear: 20 x 1.95" HB Skidmark
- Drivetrain
- 1-speed
- Seatpost diameter
- 25.4 mm
- Bottom bracket / shell
- Mid sealed BB
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: Hoffman · Chromoly, unicrown crown
Drivetrain
Check drivetrain wear →Archived: Group: BMX · Crankset: 3 Piece Tubular Chromoly, 25 teeth · Bottom bracket: Mid sealed BB · Cassette: Cassette driver · Rear cogs: 1-speed, 9 teeth · Chain: KMC 410
Brakes
Inspect the brakes →Archived: Brakes: Tektro 907 U-brake rear brakes, Tektro 289 rear levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 20" wheels · Rims: Front: Jalco, Rear: Alienation PBR, 36-hole · Hubs: Front: Alloy 3/8", Rear: Sealed 14mm cassette · Front tire: Front: 20 x 2.125" Kenda K-Rad, Rear: 20 x 1.95" HB Skidmark
Controls and contact points
Archived: Headset: 1 1/8" integrated · Handlebar: HB 2-piece · Seatpost: Pivotal alloy, 25.4mm diameter · Saddle: HB Repeater Circle Pivotal · Pedals: Alloy Platform
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.