Specialized HOTROCK 20 2008 VS Giant BOULDER JR 2011 specs comparison
Specialized Hotrock 20
General Infos| Model | Hotrock 20 |
| Manufacturer | Specialized |
| Year of production | 2008 |
| Current price | Check price Here ==> |
| Color choice |
- blue - pink - yellow and black -Blue and black |
| Sizes |
- 20 wheel (inches) |
| Sizes |
- 20 wheel (inches) |
Wheels And Breaking System
| Bike front tire | 20 X 2.125 (inches) Specialized Roller Wire |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Tektro Jr. Levers Promax Alloy (inches)V (inches) Brakes |
| Hubs for disc brakes | Forged Alloy |
| Rims manufacturer | 32-hole Alex C-1000 |
| Spoke nipples type | Not Available |
| Spoke wheel | 14ga. Straight Gauge UCP |
Frame and Body Specs
| Frame materials | A1 Premium Aluminum |
| Frame type | TIG-welded |
| Handlebar construction | Hi-tensile Steel |
| Handlebar extender | Optional |
| Handlebar stem details | Alloy |
| Headset size | 1 1/8 (inches) Threadless |
Gearing Specifications
| Bicycle chain | 1/2 X 3/32 (inches) KMC Z7 |
| Bottom bracket shell width | 68 (millimeters) |
| Bottom bracket type | 128 (millimeters) Spindle VP |
| Crankset parts and sizes | 36 Teeth Sugino |
| Gear shift levers | Shimano RS-31 Revo Twist |
| Rear gear set | 14 - 28 Teeth 6-speed |
Specialized Hotrock 20 Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Shimano RD-FT30 |
| Fork material | Single Crown Steel and aluminum |
| Fork type | 50 (millimeters) Travel RST Capa C20 |
Other Specs of Specialized Hotrock 20
| Component group sets | Juvenile Mix |
| Pedals details | Composite Platform |
| Rear shock absorber | Not Available |
| Saddle seat | Specialized Kids |
| Seat post extension | 27.2 (millimeters) Diameter Alloy Micro-adjust |
Giant Boulder JR
General Infos| Model | Boulder JR |
| Manufacturer | Giant |
| Year of production | 2011 |
| Current price | Check price Here ==> |
| Color choice |
-Red |
| Sizes |
- 24 Wheel (inches) |
Wheels And Breaking System
| Bike front tire | 24 (inches) Kenda Off Road |
| Bike rear tire | Not Available |
| Bike wheel size | 24 (inches) Wheels |
| Brakeset type | Alloy Levers Alloy Direct Pull Brakes |
| Hubs for disc brakes | Nutted |
| Rims manufacturer | 36-hole Alloy |
| Spoke nipples type | Not Available |
| Spoke wheel | 14ga. UCP |
Frame and Body Specs
| Frame materials | High-Tensile Steel |
| Frame type | TIG-welded |
| Handlebar construction | Steel Low Rise |
| Handlebar extender | Optional |
| Handlebar stem details | Steel |
| Headset size | 1 1/8" c |
Gearing Specifications
| Bicycle chain | KMC Z51 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Semi Cartridge |
| Crankset parts and sizes | 38T Teeth Alloy 3-Piece |
| Gear shift levers | SRAM MRX |
| Rear gear set | 14 - 28 Teeth 7-speed |
Giant Boulder JR Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Shimano Tourney |
| Fork material | Single Crown High-tensile Steel |
| Fork type | Not Available |
Other Specs of Giant Boulder JR
| Component group sets | Juvenile Mix |
| Pedals details | Nylon Platform |
| Rear shock absorber | Not Available |
| Saddle seat | Giant Kids MTB |
| Seat post extension | 25.4 (millimeters) Diameter Steel |
Useful links and guides ....
- To know more about this exacte bike, Specialized provided us with the latest version of its Hotrock 20 bike manual
- Find All parts, tires and accessories of Specialized Hotrock 20 Youth here
- Get your Giant Boulder JR manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Giant Boulder JR Youth here