Specialized SIRRUS 2007 VS Jamis COMMUTER 4 2011 specs comparison

Specialized Sirrus

General Infos

Model	Sirrus
Manufacturer	Specialized
Year of production	2007
Current price	Check price Here ==>
Color choice	- Blue - Red and Silver -Gray
Sizes	- Xlarge - xsmall - small - medium - large
Sizes	- Xlarge - xsmall - small - medium - large

Wheels And Breaking System

Bike front tire	700 X 28c Specialized All Condition
Bike rear tire	Not Available
Bike wheel size	700c Wheels
Brakeset type	Shimano EF-50 Levers 6061 Linear Pull Brakes
Hubs for disc brakes	Specialized Alloy
Rims manufacturer	32-hole Rear: Alex R500 Front: Alex R-500
Spoke nipples type	Not Available
Spoke wheel	14ga. Straight Gauge Stainless Steel

Frame and Body Specs

Frame materials	Specialized A1 Premium Aluminum
Frame type	TIG-welded
Handlebar construction	Specialized Event
Handlebar extender	Optional
Handlebar stem details	Specialized 3D
Headset size	1 1/8 (inches) Integrated Specialized Mindset

Gearing Specifications

Bicycle chain	KMC Z72
Bottom bracket shell width	68 (millimeters)
Bottom bracket type	113 (millimeters) Spindle Sport Cartridge
Crankset parts and sizes	28/38/48 Teeth Sugino XD
Gear shift levers	Shimano EF-50
Rear gear set	12 - 25 Teeth 8-speed

Specialized Sirrus Fork System Data

Derailleur (Front)	31.8 (millimeters) Clamp Shimano T301
Derailleur (Rear)	Shimano Sora
Fork material	Unicrown Crown Aluminum and chromoly Steerer
Fork type	Specialized Comp

Other Specs of Specialized Sirrus

Component group sets	Co (millimeters)uter Mix
Pedals details	Alloy Cage With Toe Clips And Straps Composite Body
Rear shock absorber	Not Available
Saddle seat	Body Geometry Milano Comfort Max
Seat post extension	27.2 (millimeters) Diameter Alloy Suspension

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)

Wheels And Breaking System

Bike front tire	700 X 32c Vittoria Adventure Touring
Bike rear tire	Not Available
Bike wheel size	700c 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 type	Not Available
Spoke wheel	14ga. Stainless Steel Stainless

Frame and Body Specs

Frame materials	6061 Triple Gauge Aluminum
Frame type	Aluminum
Handlebar construction	Jamis ARC
Handlebar extender	Optional
Handlebar stem details	NVO Components
Headset size	1 1/8 (inches) VP Slimstack

Gearing Specifications

Bicycle chain	KMC Z410
Bottom bracket shell width	68 (millimeters)
Bottom bracket type	122.5 (millimeters) Spindle Sealed Cartridge
Crankset parts and sizes	42T Teeth Forged Alloy
Gear shift levers	Shimano 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 material	Aluminum
Fork type	Jamis City and Cross

Other Specs of Jamis Commuter 4

Component group sets	Co (millimeters)uter Mix
Pedals details	City Style Full Alloy
Rear shock absorber	Not Available
Saddle seat	Jamis Metro Sport
Seat post extension	27.2 (millimeters) Diameter Jamis Alloy Micro-adjust