Specialized SIRRUS 2015 VS Jamis COMMUTER 4 2011 specs comparison

Specialized SIRRUS

General Infos

Model	SIRRUS
Manufacturer	Specialized
Year of production	2015
Current price	Check price Here ==>
Color choice	- Satin Hyper and Black and Gunmetal -Satin Black and Charcoal and Cyan
Sizes	- XS - S - M - L XL
Sizes	- XS - S - M - L XL

Wheels And Breaking System

Bike front tire	26TPI 700x32c Flak Jacket Protection Wire Bead Specialized Nimbus
Bike rear tire	Not Available
Bike wheel size	700c
Brakeset type	Linear Pull With Alloy Lever Alloy V-brake
Hubs for disc brakes	32h QR Double-sealed
Rims manufacturer	32h CNC Sidewalls Alloy Double-wall 700c
Spoke nipples type	Not Available
Spoke wheel	14g With Brass Nipple Stainless

Frame and Body Specs

Frame materials	Aluminum
Frame type	Fender and rack Eyelets Fully Manipulated Butted Tubing Integrated Lower Bearing Specialized A1 Premium Aluminum
Handlebar construction	25.4 (millimeters) 6-degree Backsweep Alloy Specialized Flat
Handlebar extender	Not Available
Handlebar stem details	20-degree Rise 25.4 (millimeters) Clamp 4-bolt Melt-forged Alloy Ahead Stem
Headset size	External Sealed Upper Bearings 1-1/8 (inches) FSA Integrated Cartridge Lower

Gearing Specifications

Bicycle chain	8-speed Reusable Missing Link KMC X8
Bottom bracket shell width	Not Available
Bottom bracket type	Cartridge Bearings Square Taper
Crankset parts and sizes	8-speed Triple With Chainguard Shimano Altus
Gear shift levers	8-speed Shimano EZ Fire
Rear gear set	11-32 8-speed Shimano

Specialized SIRRUS Fork System Data

Derailleur (Front)	Dual-pull Top Swing Shimano FD-M191
Derailleur (Rear)	8-speed Shimano Altus
Fork material	High Tensile Steel
Fork type	Rack and fender Mounts Straight Blade Steel

Other Specs of Specialized SIRRUS

Component group sets	Co (millimeters)uter Mix
Pedals details	Nylon Flat
Rear shock absorber	Not Available
Saddle seat	155 (millimeters) Steel Rails Body Geometry Targa Sport
Seat post extension	12.5 (millimeters) Offset 2-bolt 27.2 (millimeters) Anti-corrosion Hardware Micro-adjust Alloy

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