Specialized ROCKHOPPER A1 COMP FS 1998 VS Trek JACK 2 2009 specs comparison

Specialized Rockhopper A1 Comp FS

General Infos

Model	Rockhopper A1 Comp FS
Manufacturer	Specialized
Year of production	1998
Current price	Check price Here ==>
Color choice	-Black
Sizes	- 13 (inches) - 15 (inches) - 17 (inches) - 19 (inches) - 21 (inches)
Sizes	- 13 (inches) - 15 (inches) - 17 (inches) - 19 (inches) - 21 (inches)

Wheels And Breaking System

Bike front tire	Rear: 26 X 1.90 (inches) Specialized Dirt Master Comp Kevlar Front: 26 X 1.90 (inches) Specialized Dirt Control Comp Kevlar
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Dia-Compe DP-7 Plus Levers Dia-Compe VC-767 Brakes
Hubs for disc brakes	Q and R Ritchey Aluminum
Rims manufacturer	32-hole Rear: Ritchey Rock OCR Front: Ritchey Rock Comp
Spoke nipples type	Brass Nipples
Spoke wheel	1.8 (millimeters) Straight Gauge Stainless Steel

Frame and Body Specs

Frame materials	Specialized A1 Premium Plus Aluminum
Frame type	TIG-welded
Handlebar construction	Ritchey ForceLite
Handlebar extender	Optional
Handlebar stem details	Specialized Aluminum
Headset size	1 1/8 (inches) Threadless Ritchey Logic

Gearing Specifications

Bicycle chain	1/2 X 3/32 (inches) Shimano IG
Bottom bracket shell width	68 (millimeters) English
Bottom bracket type	Specialized Sealed Cartridge
Crankset parts and sizes	22/32/42 Teeth Specialized Strong Arm Comp
Gear shift levers	Shimano Rapidfire
Rear gear set	11 - 32 Teeth 8-speed

Specialized Rockhopper A1 Comp FS Fork System Data

Derailleur (Front)	Bottom-pull and clamp-on 31.8 (millimeters) Shimano STX-RC Top-swing
Derailleur (Rear)	Shimano Deore XT SGS
Fork material	Triple-clamp Crown Aluminum and magnesium
Fork type	Answer Manitou Spyder R

Other Specs of Specialized Rockhopper A1 Comp FS

Component group sets	Mountain Mix
Pedals details	Ritchey Logic
Rear shock absorber	Not Available
Saddle seat	Specialized Prolong Revolution Carbotech Suspension
Seat post extension	30.9 (millimeters) Diameter Ritchey Expert

Trek Jack 2

General Infos

Model	Jack 2
Manufacturer	Trek
Year of production	2009
Current price	Check price Here ==>
Color choice	-Gloss Orange
Sizes	- Small - medium - large

Wheels And Breaking System

Bike front tire	26 X 2.40 (inches) Bontrager Earl
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Hayes MX-2 Mechanical Levers Hayes MX-2 Mechanical With 8 (inches) Rotor Front and Hayes MX-2 Mechanical With 6 (inches) Rotor Rear Brakes
Hubs for disc brakes	Shimano M475
Rims manufacturer	Sun Ditch Witch
Spoke nipples type	Not Available
Spoke wheel	Not Available

Frame and Body Specs

Frame materials	Alpha White Aluminum
Frame type	TIG-welded
Handlebar construction	Bontrager Big Earl
Handlebar extender	Optional
Handlebar stem details	Bontrager Earl
Headset size	1 1/8 (inches) Aheadset Semi-cartridge

Gearing Specifications

Bicycle chain	Not Available
Bottom bracket shell width	Not Available
Bottom bracket type	Not Available
Crankset parts and sizes	22/32/42 Teeth Bontrager Big Earl
Gear shift levers	Shimano Alivio
Rear gear set	11 - 32 Teeth 8-speed

Trek Jack 2 Fork System Data

Derailleur (Front)	Shimano Alivio
Derailleur (Rear)	Shimano Alivio
Fork material	Single Crown
Fork type	100 (millimeters) Travel Manitou Slate Comp FFD

Other Specs of Trek Jack 2

Component group sets	Shimano Alivio
Pedals details	Alloy Platform
Rear shock absorber	Not Available
Saddle seat	Bontrager Earl Jump
Seat post extension	Bontrager Sport