Firmstrong HARTSOOK 2013 VS GT MACH 1 JR. 2004 specs comparison
Firmstrong Hartsook
General Infos| Model | Hartsook |
| Manufacturer | Firmstrong |
| Year of production | 2013 |
| Current price | Check price Here ==> |
| Color choice |
- Blue -Black |
| Sizes |
- 10 (inches) |
| Sizes |
- 10 (inches) |
Wheels And Breaking System
| Bike front tire | Kenda 20x1.95 |
| Bike rear tire | Not Available |
| Bike wheel size | Not Available |
| Brakeset type | Alloy U Brake |
| Hubs for disc brakes | Not Available |
| Rims manufacturer | Unavailable Wheelset |
| Spoke nipples type | Not Available |
| Spoke wheel | Not Available |
Frame and Body Specs
| Frame materials | High-Tensile Steel |
| Frame type | Not Available |
| Handlebar construction | Steel BMX |
| Handlebar extender | Not Available |
| Handlebar stem details | Alloy |
| Headset size | Not Available |
Gearing Specifications
| Bicycle chain | Unavailable Chain |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Unavailable Bottom Bracket |
| Crankset parts and sizes | Steel |
| Gear shift levers | Unavailable Shifters |
| Rear gear set | 1x1 Speeds |
Firmstrong Hartsook Fork System Data
| Derailleur (Front) | Unavailable Front Derailleur |
| Derailleur (Rear) | Unavailable Rear Derailleur |
| Fork material | Not Available |
| Fork type | Hi-Tensile Steel |
Other Specs of Firmstrong Hartsook
| Component group sets | Not Available |
| Pedals details | Resin Body |
| Rear shock absorber | Unavailable Rear Shock |
| Saddle seat | Freestyle |
| Seat post extension | Unavailable Seatpost |
GT Mach 1 Jr.
General Infos| Model | Mach 1 Jr. |
| Manufacturer | GT |
| Year of production | 2004 |
| Current price | Check price Here ==> |
| Color choice |
-Blue |
| Sizes |
- Junior |
Wheels And Breaking System
| Bike front tire | 16 X 2.125 (inches) BMX Knobby |
| Bike rear tire | Not Available |
| Bike wheel size | 16 (inches) Wheels |
| Brakeset type | Coaster Brake Rear |
| Hubs for disc brakes | Rear: Steel Coaster Brake Nutted Front: Steel |
| Rims manufacturer | 28-hole Steel |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 14ga. Straight Gauge Steel |
Frame and Body Specs
| Frame materials | Hi-tensile Steel |
| Frame type | TIG-welded |
| Handlebar construction | GT BMX |
| Handlebar extender | Not Available |
| Handlebar stem details | Aluminum |
| Headset size | Threaded 1 (inches) Steel |
Gearing Specifications
| Bicycle chain | 1/2 X 1/8 (inches) KMC Z410 |
| Bottom bracket shell width | American |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 36 Teeth Steel One-piece |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth 1-speed |
GT Mach 1 Jr. Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown Hi-tensile Steel |
| Fork type | GT |
Other Specs of GT Mach 1 Jr.
| Component group sets | Not Available |
| Pedals details | BMX |
| Rear shock absorber | Not Available |
| Saddle seat | GT Jr. BMX |
| Seat post extension | 22.2 (millimeters) Diameter Chromoly |
Useful links and guides ....
- To know more about this exacte bike, Firmstrong provided us with the latest version of its Hartsook bike manual
- Find All parts, tires and accessories of Firmstrong Hartsook BMX here
- Get your GT Mach 1 Jr. manual book version yo know further about this bike
- Saddles, tires And mechanical parts for GT Mach 1 Jr. BMX here