Specialized ROCKHOPPER A1 FS COMP 1999 VS Trek 820 2007 specs comparison

Specialized Rockhopper A1 FS Comp

General Infos

Model	Rockhopper A1 FS Comp
Manufacturer	Specialized
Year of production	1999
Current price	Check price Here ==>
Color choice	- Pearl White -Grabber Green
Sizes	- 13 (inches) - 15 (inches) - 17 (inches) - 18 (inches) - 19 (inches) - 21 (inches) - 23 (inches)
Sizes	- 13 (inches) - 15 (inches) - 17 (inches) - 18 (inches) - 19 (inches) - 21 (inches) - 23 (inches)

Wheels And Breaking System

Bike front tire	26 X 1.95 (inches) Specialized Dirt Control Comp
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Avid SD-1.0 L Levers Dia-Compe 735 Direct Pull Brakes
Hubs for disc brakes	Rear: Specialized STOUT Comp Front: Specialized Alloy
Rims manufacturer	32-hole Rear: Ritchey Rock OCR Front: Ritchey Rock Comp
Spoke nipples type	Brass Nipples
Spoke wheel	1.8 (millimeters) Straight Gauge Chung Nan Stainless Steel

Frame and Body Specs

Frame materials	Specialized A1 Aluminum
Frame type	TIG-welded
Handlebar construction	Specialized Alloy
Handlebar extender	Not Available
Handlebar stem details	Specialized A-1
Headset size	1 1/8 (inches) Threadless Specialized Headfirst Sport

Gearing Specifications

Bicycle chain	1/2 X 3/32 (inches) Shimano CN-HG72
Bottom bracket shell width	73 (millimeters) English
Bottom bracket type	110 (millimeters) Spindle Specialized Comp
Crankset parts and sizes	22/32/44 Teeth Specialized ForeArm Comp
Gear shift levers	Shimano Deore LX RapidFire SL
Rear gear set	11 - 32 Teeth 9-speed

Specialized Rockhopper A1 FS Comp Fork System Data

Derailleur (Front)	Clamp-on 35.0 (millimeters) Shimano Deore LX Top-swing
Derailleur (Rear)	Shimano Deore XT SGS
Fork material	Triple-clamp Crown Aluminum and magnesium
Fork type	3.15 (inches) Travel Answer Manitou Spyder R

Other Specs of Specialized Rockhopper A1 FS Comp

Component group sets	Mountain Mix
Pedals details	Specialized Comp Clipless
Rear shock absorber	Not Available
Saddle seat	Specialized Prolong
Seat post extension	30.9 (millimeters) Diameter Specialized Micro-adjust

Trek 820

General Infos

Model	820
Manufacturer	Trek
Year of production	2007
Current price	Check price Here ==>
Color choice	- Matte Navy and Matte Bluegray -Hot Orange and Metallic Dark Silver
Sizes	- 13 (inches) - 16 (inches) - 18 (inches) - 19.5 (inches) - 21 (inches)

Wheels And Breaking System

Bike front tire	26 X 2.00 (inches) Bontrager Connection Trail
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Shimano EF-50 Levers Tektro V Brakes
Hubs for disc brakes	Alloy
Rims manufacturer	Matrix 550
Spoke nipples type	Not Available
Spoke wheel	Not Available

Frame and Body Specs

Frame materials	Hi-tensile Steel and chromoly
Frame type	TIG-welded
Handlebar construction	Bontrager Approved
Handlebar extender	Optional
Handlebar stem details	Bontrager Approved
Headset size	Aheadset Slimstak

Gearing Specifications

Bicycle chain	Not Available
Bottom bracket shell width	Not Available
Bottom bracket type	Not Available
Crankset parts and sizes	28/38/48 Teeth SR XCC-T208
Gear shift levers	Shimano EF-50
Rear gear set	13 - 34 Teeth 7-speed

Trek 820 Fork System Data

Derailleur (Front)	Shimano C-051
Derailleur (Rear)	Shimano Acera
Fork material	Single Crown Aluminum and steel
Fork type	63 (millimeters) Travel RST 191 C7

Other Specs of Trek 820

Component group sets	Shimano Mix
Pedals details	Nylon Platform
Rear shock absorber	Not Available
Saddle seat	Bontrager Sport
Seat post extension	Bontrager Approved