Hoffman Bikes MANTRA AL 2009 VS GT POWER SERIES EXPERT 2011 specs comparison

Hoffman Bikes Mantra AL

General Infos

Model	Mantra AL
Manufacturer	Hoffman Bikes
Year of production	2009
Current price	Check price Here ==>
Color choice	-Gray
Sizes	- 20.85 TT (inches)
Sizes	- 20.85 TT (inches)

Wheels And Breaking System

Bike front tire	Rear: 20 X 1.95 (inches) HB Skidmark Front: 20 X 2.125 (inches) Kenda K-Rad
Bike rear tire	Not Available
Bike wheel size	20 (inches) Wheels
Brakeset type	Unavailable Rear Levers U-Brake Rear Brakes
Hubs for disc brakes	Rear: Sealed 14 (millimeters) Cassette Front: Alloy 3/8 (inches)
Rims manufacturer	36-hole Rear: Alex Supra E Double Wall Front: Jalco Double Wall
Spoke nipples type	Not Available
Spoke wheel	Not Available

Frame and Body Specs

Frame materials	4130 chromoly c
Frame type	TIG-welded
Handlebar construction	HB 2-piece Full Chromoly
Handlebar extender	Optional
Handlebar stem details	Not Available
Headset size	1 1/8 (inches) FSA Impact

Gearing Specifications

Bicycle chain	Not Available
Bottom bracket shell width	Not Available
Bottom bracket type	Mid Sealed BB
Crankset parts and sizes	27 Teeth 3 Piece Tubular Chromoly
Gear shift levers	Not Available
Rear gear set	10 Teeth 1-speed

Hoffman Bikes Mantra AL Fork System Data

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

Other Specs of Hoffman Bikes Mantra AL

Component group sets	BMX
Pedals details	Alloy Platform
Rear shock absorber	Not Available
Saddle seat	HB Kevlar
Seat post extension	25.4 (millimeters) Diameter Alloy Micro Adjust

GT Power Series Expert

General Infos

Model	Power Series Expert
Manufacturer	GT
Year of production	2011
Current price	Check price Here ==>
Color choice	-White and blue
Sizes	- Not available

Wheels And Breaking System

Bike front tire	20 X 1 3/8 (inches) Kenda Small Block 8
Bike rear tire	Not Available
Bike wheel size	20 (inches) Wheels
Brakeset type	Unavailable Front and Tektro 316A Rear Levers Unavailable Front and Tektro 926AL Rear Brakes
Hubs for disc brakes	Rear: Joy Tech 21 Front: GT BMX Race
Rims manufacturer	32-hole Jalco GT-02T
Spoke nipples type	Brass
Spoke wheel	15ga.

Frame and Body Specs

Frame materials	6061-T6 Aluminum
Frame type	Aluminum
Handlebar construction	GT BMX
Handlebar extender	Optional
Handlebar stem details	Cold Forged GT Drop
Headset size	1 1/8 (inches) Integrated Sealed

Gearing Specifications

Bicycle chain	KMC Z510
Bottom bracket shell width	Not Available
Bottom bracket type	Euro
Crankset parts and sizes	42T Teeth Aluminum 3pc.
Gear shift levers	Not Available
Rear gear set	16 teeth c

GT Power Series Expert Fork System Data

Derailleur (Front)	Not Available
Derailleur (Rear)	Not Available
Fork material	Steel
Fork type	GT BMX

Other Specs of GT Power Series Expert

Component group sets	BMX Mix
Pedals details	Aluminum Body Cr-mo Axle Jr. BMX Platform Design
Rear shock absorber	Not Available
Saddle seat	GT Mini Design
Seat post extension	22.2 (millimeters) Diameter Aluminum