Trek 820 2006 VS Specialized HARDROCK A1 1998 specs comparison

Trek 820

General Infos

Model	820
Manufacturer	Trek
Year of production	2006
Current price	Check price Here ==>
Color choice	- Hot Orange and Metallic Dark Silver -Rally Blue and Metallic Silver
Sizes	- 13 (inches) - 16 (inches) - 18 (inches) - 19.5 (inches) - 21 (inches) - 22.5 (inches) - womens 13 (inches) - womens 16 (inches) - womens 19.5 (inches)
Sizes	- 13 (inches) - 16 (inches) - 18 (inches) - 19.5 (inches) - 21 (inches) - 22.5 (inches) - womens 13 (inches) - womens 16 (inches) - womens 19.5 (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 Linear-pull Brakes
Hubs for disc brakes	Aluminum
Rims manufacturer	Matrix 550
Spoke nipples type	Not Available
Spoke wheel	Stainless Steel

Frame and Body Specs

Frame materials	Hi-tensile Steel
Frame type	TIG-welded
Handlebar construction	Hi-tensile
Handlebar extender	Not Available
Handlebar stem details	Hi-tensile Steel
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-100
Gear shift levers	Shimano EF50
Rear gear set	13 - 34 Teeth 7-speed

Trek 820 Fork System Data

Derailleur (Front)	Shimano FD-C051
Derailleur (Rear)	Shimano Acera
Fork material	Unicrown Crown High-tensile Steel
Fork type	Trek

Other Specs of Trek 820

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

Specialized Hardrock A1

General Infos

Model	Hardrock A1
Manufacturer	Specialized
Year of production	1998
Current price	Check price Here ==>
Color choice	-Mirror blue
Sizes	- 13 (inches) - 15 (inches) - 17 (inches) - 19 (inches) - 21 (inches)

Wheels And Breaking System

Bike front tire	26 X 1.95 (inches) Specialized Hardrock'R
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Aluminum Levers Linear-pull Brakes
Hubs for disc brakes	Q and R Rear: Aluminum Quick Release Front: Specialized Aluminum
Rims manufacturer	32-hole Araya GP-710
Spoke nipples type	Brass Nipples
Spoke wheel	2.0 (millimeters) Straight Gauge Stainless Steel

Frame and Body Specs

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

Gearing Specifications

Bicycle chain	1/2 X 3/32 (inches) IG
Bottom bracket shell width	68 (millimeters) English
Bottom bracket type	Specialized Sealed Cartridge
Crankset parts and sizes	24/34/42 Teeth Specialized Strong Arm Sport
Gear shift levers	Shimano Rapidfire
Rear gear set	11 - 28 Teeth 7-speed

Specialized Hardrock A1 Fork System Data

Derailleur (Front)	Bottom-pull and clamp-on 31.8 (millimeters) Shimano Alivio Top-swing
Derailleur (Rear)	Shimano STX
Fork material	Unicrown Crown Chromoly
Fork type	Specialized

Other Specs of Specialized Hardrock A1

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