Jamis COMMUTER 4 2011 VS Kona ROUNDABOUT 2012 specs comparison

Jamis Commuter 4 2011 comparison online with competitors

Jamis Commuter 4

General Infos
Model Commuter 4
Manufacturer Jamis
Year of production 2011
Current price Check price Here ==>   
Color choice - pearl white
-Winter blue
Sizes - M: 15 (inches)
- 17 (inches)
- 19 (inches)
- 21 (inches)
- 23 F: 14 (inches)
- 18 (inches)
Sizes - M: 15 (inches)
- 17 (inches)
- 19 (inches)
- 21 (inches)
- 23 F: 14 (inches)
- 18 (inches)

Wheels And Breaking System

Bike front tire700 X 32c Vittoria Adventure Touring
Bike rear tireNot Available
Bike wheel size700c Wheels
Brakeset type Tektro Tenera Levers
Tektro Linear Pull Brakes
Hubs for disc brakes Rear: Shimano Nexus Inter-8
Front: Shimano DH2N35 Dynamo Hub
Rims manufacturer 36-hole
Alex ID-19
Spoke nipples typeNot Available
Spoke wheel 14ga.
Stainless Steel Stainless

Frame and Body Specs

Frame materials6061 Triple Gauge Aluminum
Frame typeAluminum
Handlebar constructionJamis ARC
Handlebar extenderOptional
Handlebar stem detailsNVO Components
Headset size1 1/8 (inches) VP Slimstack

Gearing Specifications

Bicycle chainKMC Z410
Bottom bracket shell width68 (millimeters)
Bottom bracket type 122.5 (millimeters) Spindle
Sealed Cartridge
Crankset parts and sizes 42T Teeth
Forged Alloy
Gear shift leversShimano RevoShift SL-8S20
Rear gear set 20 Teeth
1-speed

Jamis Commuter 4 Fork System Data

Derailleur (Front)Not Available
Derailleur (Rear)Not Available
Fork materialAluminum
Fork typeJamis City and Cross

Other Specs of Jamis Commuter 4

Component group setsCo (millimeters)uter Mix
Pedals detailsCity Style Full Alloy
Rear shock absorberNot Available
Saddle seatJamis Metro Sport
Seat post extension 27.2 (millimeters) Diameter
Jamis Alloy Micro-adjust


Kona Roundabout 2012 comparison online with competitors

Kona Roundabout

General Infos
Model Roundabout
Manufacturer Kona
Year of production 2012
Current price Check price Here ==>   
Color choice -Not found
Sizes - L
- M
- S

Wheels And Breaking System

Bike front tireConti Ultrasport 700 X 28c
Bike rear tireNot Available
Bike wheel sizeNot Available
Brakeset typeShimano R450
Hubs for disc brakesUnavailable Front Hub Unavailable Rear Hub
Rims manufacturerFreedom Racine Elite
Spoke nipples typeNot Available
Spoke wheelNot Available

Frame and Body Specs

Frame materialsKona Cromoly Butted
Frame typeNot Available
Handlebar constructionKona Handplant
Handlebar extenderNot Available
Handlebar stem detailsKona Co (millimeters)uter
Headset sizeTH

Gearing Specifications

Bicycle chainShimano HG-53
Bottom bracket shell widthNot Available
Bottom bracket typeShimano
Crankset parts and sizesFSA Tempo City 42t
Gear shift leversShimano Acera
Rear gear setNot Available

Kona Roundabout Fork System Data

Derailleur (Front)Unavailable Front Derailleur
Derailleur (Rear)Shimano Alivio
Fork materialNot Available
Fork typeKona Retro Road

Other Specs of Kona Roundabout

Component group setsNot Available
Pedals detailsVictor VP-198
Rear shock absorberUnavailable Rear Shock
Saddle seatKona Comfort
Seat post extensionKona Double Clamp


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