Trek JET 20 2008 VS Specialized HOTROCK 24 21-SPEED STREET BOYS 2015 specs comparison

Trek Jet 20

General Infos

Model	Jet 20
Manufacturer	Trek
Year of production	2008
Current price	Check price Here ==>
Color choice	- Black and Orange -White and Blue
Sizes	- Not available
Sizes	- Not available

Wheels And Breaking System

Bike front tire	20 X 2.125 (inches) Cross Knobby
Bike rear tire	Not Available
Bike wheel size	20 (inches) Wheels
Brakeset type	Alloy Dialed Rear Levers Coast Brake and Alloy Linear Pull Rear Brakes
Hubs for disc brakes	Steel
Rims manufacturer	32-hole Alloy
Spoke nipples type	Not Available
Spoke wheel	Not Available

Frame and Body Specs

Frame materials	Alpha White Aluminum
Frame type	TIG-welded
Handlebar construction	Steel With Dialed 20 (inches) Grips
Handlebar extender	Optional
Handlebar stem details	Aluminum
Headset size	Adjustable Ball Bearing

Gearing Specifications

Bicycle chain	Not Available
Bottom bracket shell width	Not Available
Bottom bracket type	Not Available
Crankset parts and sizes	32 Teeth Dialed 4.5 (inches)
Gear shift levers	Not Available
Rear gear set	19 Teeth 1-speed

Trek Jet 20 Fork System Data

Derailleur (Front)	Not Available
Derailleur (Rear)	Not Available
Fork material	Unicrown Crown Steel
Fork type	Not Available

Other Specs of Trek Jet 20

Component group sets	Juvenile Mix
Pedals details	Dialed 20 (inches) Platform
Rear shock absorber	Not Available
Saddle seat	Dialed 20 (inches)
Seat post extension	Steel With Dialed Height Indicator

Specialized HOTROCK 24 21-SPEED STREET BOYS

General Infos

Model	HOTROCK 24 21-SPEED STREET BOYS
Manufacturer	Specialized
Year of production	2015
Current price	Check price Here ==>
Color choice	-Red and White and Black
Sizes	- Standard size for all

Wheels And Breaking System

Bike front tire	24x1.5 (inches) 30TPI Flak Jacket Protection Wire Bead Specialized Nimbus
Bike rear tire	Not Available
Bike wheel size	24
Brakeset type	60 (millimeters) Pads Die-cast Alloy V-brake
Hubs for disc brakes	3/8 (inches) Axle 32h 32h Alloy Dual Lock Nuts With 17 (millimeters) Contact Side Dual Lock Nuts With 17 (millimeters) Contact Side Loose Ball Loose Ball Nutted Steel Nutted Alloy
Rims manufacturer	32h Alloy Single Wall Pin Joint 24 (inches)
Spoke nipples type	Not Available
Spoke wheel	14g With Brass Nipple Stainless

Frame and Body Specs

Frame materials	Aluminum
Frame type	Forged Dropouts Formed Toptube and downtube Replaceable Alloy Derailleur Hanger Specialized A1 Premium Aluminum
Handlebar construction	10-degree Backsweep 25.4 (millimeters) 4-degree Upsweep Steel Kid's Flat
Handlebar extender	Not Available
Handlebar stem details	20-degree Rise 4-bolt Forged Alloy Ahead
Headset size	1/8 (inches) Sealed Cartridge Bearings Ahead

Gearing Specifications

Bicycle chain	1/2 (inches)x3/32 (inches) KMC HV500
Bottom bracket shell width	Not Available
Bottom bracket type	Semi-cartridge With Bolts 68x119 (millimeters)
Crankset parts and sizes	42/34/24 Steel With Chainguard Forged Alloy Arms
Gear shift levers	7-speed Shimano Revo-Shift
Rear gear set	14-28 7-speed Freewheel Shimano

Specialized HOTROCK 24 21-SPEED STREET BOYS Fork System Data

Derailleur (Front)	Shimano Tourney
Derailleur (Rear)	7-speed MegaRange Shimano TX-35
Fork material	Aluminum
Fork type	1-1/8 (inches) Steerer Straight Blade Alloy

Other Specs of Specialized HOTROCK 24 21-SPEED STREET BOYS

Component group sets	Youth Mix
Pedals details	9/16 (inches) With Reflectors Composite Platform
Rear shock absorber	Not Available
Saddle seat	7 (millimeters) Rails With Bumper Specialized Kids
Seat post extension	27.2 (millimeters) Single Bolt Alloy