GT BUMP 2009 VS GT MACH ONE EXPERT 2011 specs comparison

GT Bump

General Infos

Model	Bump
Manufacturer	GT
Year of production	2009
Current price	Check price Here ==>
Color choice	- Purple -Light Green
Sizes	- 21.1 TT (inches)
Sizes	- 21.1 TT (inches)

Wheels And Breaking System

Bike front tire	Rear: 20 X 2.10 (inches) Kenda Kiniption Front: 20 X 2.125 (inches) Kenda K-Rad
Bike rear tire	Not Available
Bike wheel size	20 (inches) Wheels
Brakeset type	Tektro 274A Rear Levers Tektro 907A U-brake Rear Brakes
Hubs for disc brakes	Rear: GT Sealed Cassette Front: GT Aluminum Sealed
Rims manufacturer	32-hole and 36-hole Alienation PBR
Spoke nipples type	Brass
Spoke wheel	14ga. Stainless

Frame and Body Specs

Frame materials	Chromoly Main Triangle
Frame type	TIG-welded
Handlebar construction	GT Dirt and street Cr-mo
Handlebar extender	Optional
Handlebar stem details	GT FS Design
Headset size	1 1/8 (inches) Tange Seiki Fatty 22

Gearing Specifications

Bicycle chain	KMC Z510
Bottom bracket shell width	Not Available
Bottom bracket type	Mid BB
Crankset parts and sizes	33 Teeth GT Tubular Cr-Mo 3pc.
Gear shift levers	Not Available
Rear gear set	12 Teeth 1-speed

GT Bump Fork System Data

Derailleur (Front)	Not Available
Derailleur (Rear)	Not Available
Fork material	Unicrown Crown Chromoly
Fork type	GT Dirt and Street

Other Specs of GT Bump

Component group sets	BMX
Pedals details	GT Dirt and Street Platform
Rear shock absorber	Not Available
Saddle seat	GT Slim
Seat post extension	Aluminum Micro-adjust Double Bolt

GT Mach One Expert

General Infos

Model	Mach One Expert
Manufacturer	GT
Year of production	2011
Current price	Check price Here ==>
Color choice	- black -Silver
Sizes	- Not available

Wheels And Breaking System

Bike front tire	20 X 1.75 (inches) GT Wing Design
Bike rear tire	Not Available
Bike wheel size	20 (inches) Wheels
Brakeset type	Unavailable Front and Tektro 317A Rear Levers Unavailable Front and Tektro Alloy V-brake Rear Brakes
Hubs for disc brakes	Rear: Coaster Brake Front: Steel
Rims manufacturer	36-hole Alloy
Spoke nipples type	Brass
Spoke wheel	14ga.

Frame and Body Specs

Frame materials	Hi Ten
Frame type	Steel
Handlebar construction	GT BMX
Handlebar extender	Optional
Handlebar stem details	Gt Race
Headset size	1 1/8 (inches) Threadless

Gearing Specifications

Bicycle chain	KMC Z410
Bottom bracket shell width	Not Available
Bottom bracket type	Steel
Crankset parts and sizes	36T Teeth Forged 1 Piece
Gear shift levers	Not Available
Rear gear set	16 teeth c

GT Mach One Expert Fork System Data

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

Other Specs of GT Mach One Expert

Component group sets	BMX Mix
Pedals details	Resin Jr. BMX Design
Rear shock absorber	Not Available
Saddle seat	GT BMX Padded Race
Seat post extension	25.4 (millimeters) Diameter Steel