Nishiki OPTIMA SC 1999 VS GT ZUM 4.0 2006 specs comparison

Nishiki Optima SC

General Infos

Model	Optima SC
Manufacturer	Nishiki
Year of production	1999
Current price	Check price Here ==>
Color choice	-Champagne Vapor (White)
Sizes	- 14.5 (inches) - 16.5 (inches) - 18 (inches) - 20 (inches) - 22 (inches) - 24 (inches) - womens 16 (inches) - womens 19 (inches)
Sizes	- 14.5 (inches) - 16.5 (inches) - 18 (inches) - 20 (inches) - 22 (inches) - 24 (inches) - womens 16 (inches) - womens 19 (inches)

Wheels And Breaking System

Bike front tire	26 X 1.95 (inches) Kenda K-847
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Tektro 379A Levers Tektro 824A Linear-pull Brakes
Hubs for disc brakes	Shimano RM40
Rims manufacturer	36-hole Weinmann 519
Spoke nipples type	Brass Nipples
Spoke wheel	2.0 (millimeters) Straight Gauge Chung Nan Stainless Steel

Frame and Body Specs

Frame materials	Chromoly and hi-tensile Steel
Frame type	TIG-welded
Handlebar construction	Aluminum
Handlebar extender	Optional
Handlebar stem details	Adjustable Aluminum
Headset size	1 1/8 (inches) Victor VP-H67

Gearing Specifications

Bicycle chain	1/2 X 3/32 (inches) KMC Z-51
Bottom bracket shell width	68 (millimeters) English
Bottom bracket type	117.5 (millimeters) Spindle Victor VPB-33
Crankset parts and sizes	24/34/42 Teeth Shimano AceraX
Gear shift levers	Shimano Revo TY-40
Rear gear set	11 - 28 Teeth 7-speed

Nishiki Optima SC Fork System Data

Derailleur (Front)	Bottom-pull and clamp-on 28.6 (millimeters) Shimano AceraX Top-swing
Derailleur (Rear)	Shimano AceraX
Fork material	Unicrown Crown Hi-tensile Steel
Fork type	Nishiki

Other Specs of Nishiki Optima SC

Component group sets	Hybrid Mix
Pedals details	Victor VP-806
Rear shock absorber	Not Available
Saddle seat	Selle Stratos Hyper Expert Duo-Compound Lycra Comfort
Seat post extension	26.0 (millimeters) Diameter Suspension Aluminum

GT ZuM 4.0

General Infos

Model	ZuM 4.0
Manufacturer	GT
Year of production	2006
Current price	Check price Here ==>
Color choice	-Light Silver
Sizes	- Xsmall - small - medium - large - xlarge

Wheels And Breaking System

Bike front tire	26 X 1.25 (inches) Tioga City Slicker
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	110 (millimeters) Arms 70 (millimeters) DIN Pads Brakes Shimano ST-EF29 Levers Tektro Linear Pull
Hubs for disc brakes	Rear: Alloy QR Casette Hub Front: Alloy QR Hub
Rims manufacturer	Double Wall Alloy Rims With CNC Type Sidewall
Spoke nipples type	Brass CP
Spoke wheel	14ga. Straight Gauge Stainless Steel

Frame and Body Specs

Frame materials	GT Triple Triangle 6061 Custom Tube-set
Frame type	TIG-welded
Handlebar construction	Butted 6061 Heat Treated Aluminum GT Riser Bar
Handlebar extender	Not Available
Handlebar stem details	Threadless 25 Degree Rise With 4 Bolt Alum Face Plate GT ATB
Headset size	FSA Integrated

Gearing Specifications

Bicycle chain	Shimano
Bottom bracket shell width	Not Available
Bottom bracket type	Cartridge Sealed
Crankset parts and sizes	22/32/44 Teeth Suntour XCT-252
Gear shift levers	Shimano ST-EF29
Rear gear set	11 - 32 Teeth 8-speed

GT ZuM 4.0 Fork System Data

Derailleur (Front)	Shimano Acera
Derailleur (Rear)	Shimano Acera
Fork material	Steel and aluminum and magnesium
Fork type	50 (millimeters) SR NRX-6000

Other Specs of GT ZuM 4.0

Component group sets	Co (millimeters)uter Mix
Pedals details	High Impact Nylon Platform
Rear shock absorber	Not Available
Saddle seat	WTB Speed V
Seat post extension	GT Aluminum 6061