Uses front tire 650B×2.2″; rear size isn’t listed.
Velopedia Bicycle Archive
2011 Jamis Dakar Sixfifty B2
Original specifications: SRAM X0 · 10-speed rear derailleur · 650bc wheels · 28.75 lbs published weight.
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At a glance
Archive #23714- Model year
- 2011
- Category
- Mountain
- Original MSRP
- $4,575.00
- Sizes
- 13, 15, 17, 19, 21"
- Colors
- Pearl white
- Weight
- 28.75 lbs
- In this record
- 24 specifications · archived image · original MSRP
Original buildKinesium alloy · Mountain Mix · 650bc wheels
Frameset
| Frame Construction | Alloy |
|---|---|
| Frame Material | Kinesium alloy |
| Fork | White Brothers Loop |
| Rear Shock | RockShox Monarch RT |
Drivetrain
| Component Group | Mountain Mix |
|---|---|
| Shifters | Sram X.0 |
| Front Derailleur | SRAM X.0, 34.9mm top pull |
| Rear Derailleur | SRAM X.0 Mid Cage |
| Crankset | SRAM X.0, 39/26t teeth |
| Bottom Bracket | SRAM X.O integrated |
| Cassette | SRAM PG-1070 |
| Rear Cogs | 10-speed, 12 - 36 teeth |
| Chain | KMC X10 SL 10-speed |
Brakes
| Brakes | Avid XO hydraulic disc brakes, Avid XO hydraulic disc levers |
|---|
Cockpit & Contact Points
| Headset | FSA Orbit 1.5 ZS |
|---|---|
| Handlebar | Ritchey Pro riser |
| Handlebar Extensions | Not included |
| Stem | Ritchey Pro 4-Axis |
| Saddle | WTB Vigo Team Carbon |
| Seatpost | Crank Brothers Jolpin 4R, 31.6mm diameter |
Wheels & Tires
| Hubs | Front: AC 20mm thru-axle, Rear: AC225 |
|---|---|
| Rims | American Classic 650B XC Disc |
| Front Tire | 650B x 2.2" WTB Wolverine Team XC |
| Wheel Size | 650bc wheels |
No specifications match. Try a component name or clear your search.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
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

Maxxis Ikon Dual Compound/TR Tire - 27.5in Tanwall, Dual Compound/TR/EXO, 27.5x2.2
Replacement option
31.6mm diameter

FSA Gossamer SB20 Seatpost Black, 31.6mm, 350mm
Replacement option
More parts (9)Fewer parts
39/26t teeth
34.9mm top pull
Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.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
- 650B x 2.2" WTB Wolverine Team XC
- Drivetrain
- 10-speed
- Seatpost diameter
- 31.6 mm
- Bottom bracket / shell
- SRAM X.O integrated
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: Alloy · Fork: White Brothers Loop
Suspension
Evaluate the suspension →Archived: Fork: White Brothers Loop · Rear shock: RockShox Monarch RT
Drivetrain
Check drivetrain wear →Archived: Group: Mountain Mix · Shifters: Sram X.0 · Front derailleur: SRAM X.0, 34.9mm top pull · Rear derailleur: SRAM X.0 Mid Cage · Crankset: SRAM X.0, 39/26t teeth · Bottom bracket: SRAM X.O integrated · Cassette: SRAM PG-1070 · Rear cogs: 10-speed, 12 - 36 teeth · Chain: KMC X10 SL 10-speed
Brakes
Inspect the brakes →Archived: Brakes: Avid XO hydraulic disc brakes, Avid XO hydraulic disc levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 650bc wheels · Rims: American Classic 650B XC Disc · Hubs: Front: AC 20mm thru-axle, Rear: AC225 · Front tire: 650B x 2.2" WTB Wolverine Team XC
Controls and contact points
Archived: Headset: FSA Orbit 1.5 ZS · Handlebar: Ritchey Pro riser · Stem: Ritchey Pro 4-Axis · Seatpost: Crank Brothers Jolpin 4R, 31.6mm diameter · Saddle: WTB Vigo Team Carbon
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





