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
Campaign
Original buildKinesium alloy · Mountain Mix · 650bc wheels

Historical catalog variants

Archived sizes and colors

5 item records

Item-level catalog entries recovered from Velopedia’s original bicycle archive. They document how this model was listed historically; they do not identify the frame size associated with legacy reference geometry or indicate current availability.

Published sizes

1315171921"

Published colors

Pearl White
View 5 archived size/color combinations
SizeColor
13Pearl White
15Pearl White
17Pearl White
19Pearl White
21"Pearl White

Historical catalog evidence. Exact specifications and naming may vary by market, production run or manufacturer revision.

Frameset

Frame ConstructionAlloy
Frame MaterialKinesium alloy
ForkWhite Brothers Loop
Rear ShockRockShox Monarch RT

Drivetrain

Component GroupMountain Mix
ShiftersSram X.0
Front DerailleurSRAM X.0, 34.9mm top pull
Rear DerailleurSRAM X.0 Mid Cage
CranksetSRAM X.0, 39/26t teeth
Bottom BracketSRAM X.O integrated
CassetteSRAM PG-1070
Rear Cogs10-speed, 12 - 36 teeth
ChainKMC X10 SL 10-speed

Brakes

BrakesAvid XO hydraulic disc brakes, Avid XO hydraulic disc levers

Cockpit & Contact Points

HeadsetFSA Orbit 1.5 ZS
HandlebarRitchey Pro riser
Handlebar ExtensionsNot included
StemRitchey Pro 4-Axis
SaddleWTB Vigo Team Carbon
SeatpostCrank Brothers Jolpin 4R, 31.6mm diameter

Wheels & Tires

HubsFront: AC 20mm thru-axle, Rear: AC225
RimsAmerican Classic 650B XC Disc
Front Tire650B x 2.2" WTB Wolverine Team XC
Wheel Size650bc wheels

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

All published sizes39/26T · 12–36T · 10-speed
Lowest0.72:1 Highest3.25:1 Total range450%
Estimated speed At 90 RPM Lowest gear5.3 mph Highest gear23.8 mph

Uses front tire 650B×2.2″; rear size isn’t listed.

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 other gearing

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Your gearing setup
Gears

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Gear, dimension and cadence changes update results automatically.

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

Find replacement parts

Original specifications
Front tire · Original
650B x 2.2" WTB Wolverine Team XC
Retailer offers
Seatpost · Original
Crank Brothers Jolpin 4R

31.6mm diameter

Retailer offers
Chain · Original
KMC X10 SL 10-speed
More parts (9)Fewer parts
Cassette · Original
SRAM PG-1070
Saddle · Original
WTB Vigo Team Carbon
Crankset · Original
SRAM X.0

39/26t teeth

Front derailleur · Original
SRAM X.0

34.9mm top pull

Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Rear derailleur · Original
SRAM X.0 Mid Cage Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Shifters · Original
Sram X.0 Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Handlebar · Original
Ritchey Pro riser
Stem · Original
Ritchey Pro 4-Axis
Headset · Original
FSA Orbit 1.5 ZS

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
0 of 13 checked Progress stays in this browser for this record.

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 →

Archived: Frame: Alloy · Fork: White Brothers Loop

Archived: Fork: White Brothers Loop · Rear shock: RockShox Monarch RT

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

Archived: Brakes: Avid XO hydraulic disc brakes, Avid XO hydraulic disc levers

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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Campaign

Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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