GT SPEED SERIES JR. 1999 VS GT MACH ONE PRO 20 2009 specs comparison
GT Speed Series JR.
General Infos| Model | Speed Series JR. |
| Manufacturer | GT |
| Year of production | 1999 |
| Current price | Check price Here ==> |
| Color choice |
-Ball-Burnished |
| Sizes |
- Mini |
| Sizes |
- Mini |
Wheels And Breaking System
| Bike front tire | 20 X 1 1/8 (inches) GT AA Pro |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Tektro Alloy Linear-pull Rear Levers Tektro Linear-pull Rear Brakes |
| Hubs for disc brakes | GT Mohawk |
| Rims manufacturer | 28-hole Weinmann Mini Zac |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 1.8 (millimeters) Straight Gauge Wheelsmith Stainless Steel |
Frame and Body Specs
| Frame materials | 6061 T6 Aluminum |
| Frame type | Welded |
| Handlebar construction | GT Jr Aluminum |
| Handlebar extender | Not Available |
| Handlebar stem details | GT Mini Piston |
| Headset size | 1 (inches) Threadless Aheadset AL |
Gearing Specifications
| Bicycle chain | 1/2 X 1/8 (inches) |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Cartridge |
| Crankset parts and sizes | 42 Teeth GT 3-piece Aluminum |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth 1-speed |
GT Speed Series JR. Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown Reynolds 531 |
| Fork type | GT |
Other Specs of GT Speed Series JR.
| Component group sets | Not Available |
| Pedals details | Victor VP-104 Clipless |
| Rear shock absorber | Not Available |
| Saddle seat | Uni Mini |
| Seat post extension | Aluminum |
GT Mach One Pro 20
General Infos| Model | Mach One Pro 20 |
| Manufacturer | GT |
| Year of production | 2009 |
| Current price | Check price Here ==> |
| Color choice |
- White -Black |
| Sizes |
- 19.5 TT (inches) |
Wheels And Breaking System
| Bike front tire | Rear: 20 X 1.75 (inches) GT Wing Design Front: 20 X 2.125 (inches) GT Wing Design |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Tektro 319 Rear Levers Tektro Alloy V-brake Rear Brakes |
| Hubs for disc brakes | GT Mohawk |
| Rims manufacturer | 36-hole Aluminum |
| Spoke nipples type | Brass |
| Spoke wheel | 14ga. |
Frame and Body Specs
| Frame materials | Not Available |
| Frame type | TIG-welded |
| Handlebar construction | GT BMX Hi-ten |
| Handlebar extender | Optional |
| Handlebar stem details | GT Aluminum |
| Headset size | 1 1/8 (inches) VP A74F HD |
Gearing Specifications
| Bicycle chain | KMC Z410 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Steel |
| Crankset parts and sizes | 42 Teeth GT Forged 3pc. |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth 1-speed |
GT Mach One Pro 20 Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown Hi-tensile Steel and chromoly Steerer |
| Fork type | GT BMX |
Other Specs of GT Mach One Pro 20
| Component group sets | BMX |
| Pedals details | BMX Platform |
| Rear shock absorber | Not Available |
| Saddle seat | GT BMX Pro Lite |
| Seat post extension | 25.4 (millimeters) Diameter Aluminum |
Useful links and guides ....
- To know more about this exacte bike, GT provided us with the latest version of its Speed Series JR. bike manual
- Find All parts, tires and accessories of GT Speed Series JR. BMX here
- Get your GT Mach One Pro 20 manual book version yo know further about this bike
- Saddles, tires And mechanical parts for GT Mach One Pro 20 BMX here