Lowest0.65:1
Highest4.00:1
Total range618%
Estimated speed At 90 RPM
Lowest gear
Highest gear
Uses front tire 29×2.2; rear size isn’t listed.
Velopedia Bicycle Archive
2011 Jamis Dragon 29 Sport
Original specifications: SRAM X7 · 9-speed · mechanical rear derailleur · 29" wheels · 31.25 lbs published weight.
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At a glance
Archive #23728- Model year
- 2011
- Category
- Mountain
- Original MSRP
- $1,100.00
- Sizes
- 15, 17, 19, 21"
- Colors
- True blue/gloss white
- Weight
- 31.25 lbs
- In this record
- 25 specifications · archived image · original MSRP
Model history 1 other year
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Identification clues
2011 archived details
- Published colors
- True blue/gloss white
- Frame
- Reynolds 520
- Original equipment
- Mountain Mix
Clues, not proof of model year. Colors vary and components may have been replaced.
Original buildReynolds 520 · Mountain Mix · 29" wheels
Frameset
| Frame Construction | Steel |
|---|---|
| Frame Material | Reynolds 520 |
| Fork | RockShox Tora TK 29, 100mm travel |
Drivetrain
| Component Group | Mountain Mix |
|---|---|
| Shifters | SRAM X.7 Trigger |
| Front Derailleur | SRAM X.7, 28.6mm dual pull |
| Rear Derailleur | SRAM X.7 Mid Cage |
| Crankset | SRAM S800, 44/32/22t teeth |
| Bottom Bracket | SRAM GXP |
| Cassette | SRAM PG-950 |
| Rear Cogs | 9-speed, 11 - 34 teeth |
| Chain | KMC Z99 |
| Pedals | Alloy body / steel cage |
Brakes
| Brakes | Avid Juicy 3 Hydraulic w/185mm Rotor front/Avid Juicy 3 Hydraulic w/160mm Rotor rear brakes, Avid Juicy 3 Hydraulic levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" Aheadset |
|---|---|
| Handlebar | Ritchey Comp flat |
| Handlebar Extensions | Not included |
| Stem | Ritchey OS |
| Saddle | Jamis XC |
| Seatpost | Ritchey 2-Bolt, 27.2mm diameter |
Wheels & Tires
| Hubs | Shimano M475 |
|---|---|
| Rims | WTB Speed Disc All-Mountain, 32-hole |
| Spokes | WTB stainless, 14ga. (2.0mm) |
| Front Tire | 29 x 2.2" Geax AKA |
| 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
Ritchey 2-Bolt
27.2mm diameter
Retailer offers
Race Face Ride XC Seatpost Black, 27.2x375mm
Replacement option
KMC Z99
More parts (10)Fewer parts
29 x 2.2" Geax AKA
Replacement search: 29x2.2 bicycle tire Before ordering: Check rim type and tire clearance.
SRAM GXP
SRAM S800
44/32/22t teeth
SRAM X.7
28.6mm dual pull
SRAM X.7 Mid Cage
SRAM X.7 Trigger
Ritchey Comp flat
Ritchey OS
WTB Speed Disc All-Mountain
32-hole
Shimano M475
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 2.2" Geax AKA
- Drivetrain
- 9-speed
- Seatpost diameter
- 27.2 mm
- Bottom bracket / shell
- SRAM GXP
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: Steel · Fork: RockShox Tora TK 29, 100mm travel
Suspension
Evaluate the suspension →Archived: Fork: RockShox Tora TK 29, 100mm travel
Drivetrain
Check drivetrain wear →Archived: Group: Mountain Mix · Shifters: SRAM X.7 Trigger · Front derailleur: SRAM X.7, 28.6mm dual pull · Rear derailleur: SRAM X.7 Mid Cage · Crankset: SRAM S800, 44/32/22t teeth · Bottom bracket: SRAM GXP · Cassette: SRAM PG-950 · Rear cogs: 9-speed, 11 - 34 teeth · Chain: KMC Z99
Brakes
Inspect the brakes →Archived: Brakes: Avid Juicy 3 Hydraulic w/185mm Rotor front/Avid Juicy 3 Hydraulic w/160mm Rotor rear brakes, Avid Juicy 3 Hydraulic levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 29" wheels · Rims: WTB Speed Disc All-Mountain, 32-hole · Hubs: Shimano M475 · Front tire: 29 x 2.2" Geax AKA
Controls and contact points
Archived: Headset: 1 1/8" Aheadset · Handlebar: Ritchey Comp flat · Stem: Ritchey OS · Seatpost: Ritchey 2-Bolt, 27.2mm diameter · Saddle: Jamis XC · Pedals: Alloy body / steel cage
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.