Specialized ROCKHOPPER COMP 29 2009 VS Trek 820 2004 specs comparison

Specialized Rockhopper Comp 29

General Infos

Model	Rockhopper Comp 29
Manufacturer	Specialized
Year of production	2009
Current price	Check price Here ==>
Color choice	- Gloss Green -Satin Black
Sizes	- 15 (inches) - 17 (inches) - 19 (inches) - 21 (inches) - 23 (inches)
Sizes	- 15 (inches) - 17 (inches) - 19 (inches) - 21 (inches) - 23 (inches)

Wheels And Breaking System

Bike front tire	29 X 2.00 (inches) Specialized Fast Trak Sport
Bike rear tire	Not Available
Bike wheel size	29 (inches) Wheels
Brakeset type	Avid FR-5 Levers Avid BB5 With 160 (millimeters) Rotor Brakes
Hubs for disc brakes	Rear: Specialized Forged Alloy Front: Specialized Hi Lo Disc
Rims manufacturer	28-hole and 32-hole Specialized RHD 29 (inches)
Spoke nipples type	Not Available
Spoke wheel	15ga. Stainless Steel

Frame and Body Specs

Frame materials	Specialized A1 Premium Aluminum
Frame type	TIG-welded
Handlebar construction	Specialized Low Riser
Handlebar extender	Optional
Handlebar stem details	31.8 (millimeters) Specialized 3D
Headset size	1 1/8 (inches) Specialized Loose Ball

Gearing Specifications

Bicycle chain	KMC X8
Bottom bracket shell width	68 (millimeters)
Bottom bracket type	118 (millimeters) Spindle Shimano BB-ES25
Crankset parts and sizes	22/32/42 Teeth Shimano FC-M36108
Gear shift levers	SRAM X.4 Trigger
Rear gear set	11 - 32 Teeth 8-speed

Specialized Rockhopper Comp 29 Fork System Data

Derailleur (Front)	Shimano Altus
Derailleur (Rear)	SRAM X.5 Medium Cage
Fork material	Single Crown Aluminum and chromoly
Fork type	80 (millimeters) Travel RockShox Dart 3 SL

Other Specs of Specialized Rockhopper Comp 29

Component group sets	SRAM Mix
Pedals details	Plastic Body Steel Cage
Rear shock absorber	Not Available
Saddle seat	Specialized XC Body Geometry
Seat post extension	30.9 (millimeters) Diameter Micro Adjust Specialized Alloy Two Bolt

Trek 820

General Infos

Model	820
Manufacturer	Trek
Year of production	2004
Current price	Check price Here ==>
Color choice	- Blue and Silver -Black and Red
Sizes	- 13 (inches) - 15.5 (inches) - 17.5 (inches) - 19.5 (inches) - 21.5 (inches) - womens 13 (inches) - womens 17.5 (inches)

Wheels And Breaking System

Bike front tire	26 X 2.00 (inches) Bontrager Connection
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Aluminum Linear-pull Levers Aluminum Linear-pull Brakes
Hubs for disc brakes	Q and R Aluminum
Rims manufacturer	32-hole Matrix 550
Spoke nipples type	Brass Nipples
Spoke wheel	14ga. Straight Gauge Stainless Steel

Frame and Body Specs

Frame materials	Hi-tensile Steel
Frame type	TIG-welded
Handlebar construction	1.25 (inches) Rise Aluminum
Handlebar extender	Optional
Handlebar stem details	Aluminum Threadless
Headset size	1 1/8 (inches) Threadless Aheadset

Gearing Specifications

Bicycle chain	1/2 X 3/32 (inches)
Bottom bracket shell width	Not Available
Bottom bracket type	Not Available
Crankset parts and sizes	28/38/48 Teeth Suntour XCC-100
Gear shift levers	Shimano Altus EF-29
Rear gear set	13 - 30 Teeth 7-speed

Trek 820 Fork System Data

Derailleur (Front)	Shimano C051
Derailleur (Rear)	Shimano Altus
Fork material	Single Crown Aluminum
Fork type	63 (millimeters) Travel RST 191 CL

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	Aluminum Micro-adjust