Specialized HOTROCK 20 STREET BOYS 2012 VS Univega JAMMER 1998 specs comparison

Specialized Hotrock 20 Street Boys

General Infos

Model	Hotrock 20 Street Boys
Manufacturer	Specialized
Year of production	2012
Current price	Check price Here ==>
Color choice	-Red
Sizes	- Not available
Sizes	- Not available

Wheels And Breaking System

Bike front tire	Nimbus With Flk Jkt 20 X1.5 (inches)
Bike rear tire	Not Available
Bike wheel size	Not Available
Brakeset type	Die Cast Alloy Linear Pull
Hubs for disc brakes	Unavailable Front Hub Unavailable Rear Hub
Rims manufacturer	Alex C-1000 20 (inches)
Spoke nipples type	Not Available
Spoke wheel	Not Available

Frame and Body Specs

Frame materials	A1 Premium Aluminum
Frame type	Not Available
Handlebar construction	Hi-Ten Riser
Handlebar extender	Not Available
Handlebar stem details	Ahead 25.4
Headset size	1 1/8 (inches) Threadless

Gearing Specifications

Bicycle chain	KMC Z-50
Bottom bracket shell width	Not Available
Bottom bracket type	Water Sealed Loose-ball
Crankset parts and sizes	Forged Alloy
Gear shift levers	Shimano RS-31 Revo Twist 6spd
Rear gear set	Not Available

Specialized Hotrock 20 Street Boys Fork System Data

Derailleur (Front)	Unavailable Front Derailleur
Derailleur (Rear)	Shimano FT-30
Fork material	Not Available
Fork type	Alloy Straight Blades

Other Specs of Specialized Hotrock 20 Street Boys

Component group sets	Not Available
Pedals details	Compostie
Rear shock absorber	Unavailable Rear Shock
Saddle seat	Specialized Kids Body Geometry
Seat post extension	Alloy 27.2

Univega Jammer

General Infos

Model	Jammer
Manufacturer	Univega
Year of production	1998
Current price	Check price Here ==>
Color choice	- Sapphire Blue -Freckle Black
Sizes	- Boys 11 (inches) - girls 11 (inches)

Wheels And Breaking System

Bike front tire	20 X 2.00 (inches) Multi-terrain
Bike rear tire	Not Available
Bike wheel size	20 (inches) Wheels
Brakeset type	Resin and aluminum Levers Aluminum Cantilever Brakes
Hubs for disc brakes	Nutted Steel
Rims manufacturer	36-hole Weinmann 519
Spoke nipples type	Brass Nipples
Spoke wheel	2.0 (millimeters) Straight Gauge Chung Nan Steel

Frame and Body Specs

Frame materials	Hi-tensile Steel
Frame type	TIG-welded
Handlebar construction	Steel
Handlebar extender	Optional
Handlebar stem details	Steel
Headset size	1 (inches) Steel

Gearing Specifications

Bicycle chain	1/2 X 3/32 (inches) KMC UG-50
Bottom bracket shell width	American 24tpi
Bottom bracket type	One Piece
Crankset parts and sizes	40 Teeth 1-piece 5 1/2 (inches)
Gear shift levers	Grip Shift MRX-170 Rear
Rear gear set	14 - 28 Teeth 6-speed

Univega Jammer Fork System Data

Derailleur (Front)	Not Available
Derailleur (Rear)	Shimano Tourney TY-22
Fork material	Unicrown Crown Hi-tensile Steel
Fork type	Univega Jr. ATB

Other Specs of Univega Jammer

Component group sets	Shimano Tourney
Pedals details	Resin
Rear shock absorber	Not Available
Saddle seat	Padded Vinyl
Seat post extension	25.4 (millimeters) Diameter Steel Pillar