Ratio1.78:1
Estimated speed At 90 RPM
Gear
Uses front tire 29×2.1; rear size isn’t listed.
Velopedia Bicycle Archive
2009 Kona Big Unit
Original specifications: Single Speed Mix drivetrain · 29" wheels.
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At a glance
Archive #16944- Model year
- 2009
- Category
- Mountain
- Original MSRP
- $1,999.00
- Sizes
- 16", 18", 19", 20", 22"
- Colors
- Lime Green Metallic
- In this record
- 24 specifications · archived image · original MSRP
Model history 1 other year
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Identification clues
2009 archived details
- Published colors
- Lime Green Metallic
- Frame
- Kona Race Light Scandium Butted
- Original equipment
- Single Speed Mix
Clues, not proof of model year. Colors vary and components may have been replaced.
Original buildKona Race Light Scandium Butted · Single Speed Mix · 29" wheels
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | Kona Race Light Scandium Butted |
| Fork | Fox 32 F29 RL, 80mm travel |
| Fork Material | Single |
Drivetrain
| Component Group | Single Speed Mix |
|---|---|
| Crankset | Race Face Atlas SS w/bashguard, 32 teeth |
| Bottom Bracket | Race Face X-Type |
| BB Shell Width | 73mm |
| Cassette | Formula Sprocket |
| Rear Cogs | 1-speed, 18 teeth |
| Chain | KMC Z610 |
| Pedals | Shimano PD-M520 |
Brakes
| Brakes | Shimano M575 disc brakes, Shimano M575 Hydraulic levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" FSA Orbit DL |
|---|---|
| Handlebar | Kona XC/BC Deluxe riser |
| Handlebar Extensions | Not included |
| Stem | Kona XC/BC Deluxe |
| Saddle | WTB Rocket V Comp |
| Seatpost | Kona XC/BC Deluxe |
Wheels & Tires
| Hubs | Formula disc |
|---|---|
| Rims | Mavic TN 719 |
| Spokes | Sandvic stainless, 15ga. (1.8mm) |
| Front Tire | 29 x 2.10" Maxxis Ignitor |
| Wheel Size | 29" 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
29 x 2.10" Maxxis Ignitor
Retailer offers
Schwalbe RapidRob Performance 29in Tire Black, Clincher/Wire, 29x2.1
Replacement option
Maxxis Ignitor on eBaySponsored links
Race Face X-Type
Shimano PD-M520
More parts (4)Fewer parts
WTB Rocket V Comp
Race Face Atlas SS w/bashguard
32 teeth
1 1/8" FSA Orbit DL
Mavic TN 719
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
- 29 x 2.10" Maxxis Ignitor
- Drivetrain
- 1-speed
- Bottom bracket / shell
- Race Face X-Type · 73mm
Equipment inspection checks 11 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: TIG-welded · Fork: Fox 32 F29 RL, 80mm travel · Single
Suspension
Evaluate the suspension →Archived: Fork: Fox 32 F29 RL, 80mm travel
Drivetrain
Check drivetrain wear →Archived: Group: Single Speed Mix · Crankset: Race Face Atlas SS w/bashguard, 32 teeth · Bottom bracket: Race Face X-Type · Cassette: Formula Sprocket · Rear cogs: 1-speed, 18 teeth · Chain: KMC Z610
Brakes
Inspect the brakes →Archived: Brakes: Shimano M575 disc brakes, Shimano M575 Hydraulic levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 29" wheels · Rims: Mavic TN 719 · Hubs: Formula disc · Front tire: 29 x 2.10" Maxxis Ignitor
Controls and contact points
Archived: Headset: 1 1/8" FSA Orbit DL · Handlebar: Kona XC/BC Deluxe riser · Stem: Kona XC/BC Deluxe · Seatpost: Kona XC/BC Deluxe · Saddle: WTB Rocket V Comp · Pedals: Shimano PD-M520
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.