Specialized P.20 AMATEUR 2011 VS Specialized ROCKHOPPER 1997 specs comparison

Specialized P.20 Amateur

General Infos

Model	P.20 Amateur
Manufacturer	Specialized
Year of production	2011
Current price	Check price Here ==>
Color choice	- Blu -Black
Sizes	- 20.5 TT (inches)
Sizes	- 20.5 TT (inches)

Wheels And Breaking System

Bike front tire	20 X 2.2 (inches) Specialized Rhythm Lite Sport
Bike rear tire	Not Available
Bike wheel size	20 (inches) Wheels
Brakeset type	Lever U Brake Rear Levers Tektro FX-340 U-brake Rear Brakes
Hubs for disc brakes	Rear: Forged Alloy Cassette Front: Forged Alloy Low Flange
Rims manufacturer	36-hole Alloy Single Wall
Spoke nipples type	Not Available
Spoke wheel	14ga. Butted Stainless

Frame and Body Specs

Frame materials	Hi Ten
Frame type	TIG-welded
Handlebar construction	2-piece CrMo
Handlebar extender	Optional
Handlebar stem details	Forged Alloy
Headset size	1 1/8 (inches) Threadless Campy Spec Integrated Sealed Cartridge Bearing

Gearing Specifications

Bicycle chain	1/2 X 1/8 (inches) KMC Z510H
Bottom bracket shell width	Not Available
Bottom bracket type	Mid BB
Crankset parts and sizes	25t Teeth P. 3pc Tubulars
Gear shift levers	Not Available
Rear gear set	12 Teeth 1-speed

Specialized P.20 Amateur Fork System Data

Derailleur (Front)	Not Available
Derailleur (Rear)	Not Available
Fork material	Single Crown Hi Ten
Fork type	Hi Ten

Other Specs of Specialized P.20 Amateur

Component group sets	Dirt Jump Mix
Pedals details	P. Lo-Pro Plastic Platform
Rear shock absorber	Not Available
Saddle seat	P. Combo
Seat post extension	25.4 (millimeters) Diameter Alloy

Specialized Rockhopper

General Infos

Model	Rockhopper
Manufacturer	Specialized
Year of production	1997
Current price	Check price Here ==>
Color choice	- red -Dark blue
Sizes	- 13.5 (inches) - 15.5 (inches) - 17 (inches) - 18 (inches) - 19 (inches) - 20.5 (inches)

Wheels And Breaking System

Bike front tire	Rear: 26 X 1.90 (inches) Specialized Team Master Front: 26 X 2.00 (inches) Specialized Team Control
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Dia-Compe DP-7 Levers Dia-Compe Direct Pull Brakes
Hubs for disc brakes	Q and R Rear: Shimano Cassette Front: SBC Aluminum Quick Release
Rims manufacturer	32-hole Ritchey Rock SCX
Spoke nipples type	Brass Nipples
Spoke wheel	2.0 (millimeters) Straight Gauge Stainless Steel

Frame and Body Specs

Frame materials	Double-butted SBC DirectDrive Light Chromoly
Frame type	TIG-welded
Handlebar construction	SBC Aluminum
Handlebar extender	Optional
Handlebar stem details	SBC Aluminum
Headset size	1 1/8 (inches) Threadless Tange

Gearing Specifications

Bicycle chain	1/2 X 3/32 (inches) Shimano
Bottom bracket shell width	68 (millimeters) English
Bottom bracket type	SBC Sealed Cartridge
Crankset parts and sizes	22/32/42 Teeth SBC Son Of Strongarm
Gear shift levers	Grip Shift SRT-400i
Rear gear set	11 - 30 Teeth 7-speed

Specialized Rockhopper 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 SBC DirectDrive Chromoly
Fork type	SBC

Other Specs of Specialized Rockhopper

Component group sets	Not Available
Pedals details	Resin Body With Clips & Straps Aluminum Cage
Rear shock absorber	Not Available
Saddle seat	Specialized Prolong Evolution Carbotech
Seat post extension	30.4 (millimeters) Diameter Aluminum Micro-adjust