Specialized ROCKHOPPER 2004 VS Trek JACK 1 2007 specs comparison
Specialized Rockhopper
General Infos| Model | Rockhopper |
| Manufacturer | Specialized |
| Year of production | 2004 |
| Current price | Check price Here ==> |
| Color choice |
- Silver -Blue |
| Sizes |
- 13 (inches) - 15 (inches) - 17 (inches) - 19 (inches) - 21 (inches) - 23 (inches) |
| Sizes |
- 13 (inches) - 15 (inches) - 17 (inches) - 19 (inches) - 21 (inches) - 23 (inches) |
Wheels And Breaking System
| Bike front tire | 26 X 2.00 (inches) Specialized Roll-X |
| Bike rear tire | Not Available |
| Bike wheel size | 26 (inches) Wheels |
| Brakeset type | Shimano Alivio RapidFire Plus Levers Tektro Linear-pull Brakes |
| Hubs for disc brakes | Aluminum QR |
| Rims manufacturer | 32-hole Alex DM-20 |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 15ga. Straight Gauge Stainless Steel |
Frame and Body Specs
| Frame materials | Specialized A1 Aluminum |
| Frame type | TIG-welded |
| Handlebar construction | Specialized Aluminum |
| Handlebar extender | Optional |
| Handlebar stem details | Specialized Aluminum |
| Headset size | 1 1/8 (inches) Threadless Aluminum Threadless |
Gearing Specifications
| Bicycle chain | 1/2 X 3/32 (inches) Shimano CN-IG31 |
| Bottom bracket shell width | 68 (millimeters) English |
| Bottom bracket type | 113 (millimeters) Spindle TruVativ Cartridge |
| Crankset parts and sizes | 22/32/42 Teeth Specialized Forearm II |
| Gear shift levers | Shimano Alivio RapidFire Plus |
| Rear gear set | 11 - 30 Teeth 8-speed |
Specialized Rockhopper Fork System Data
| Derailleur (Front) | Bottom-pull and clamp-on 34.9 (millimeters) Shimano Alivio |
| Derailleur (Rear) | Shimano Deore |
| Fork material | Single Crown Aluminum |
| Fork type | 80 (millimeters) Travel Answer Manitou Six |
Other Specs of Specialized Rockhopper
| Component group sets | Mountain Mix |
| Pedals details | Aluminum Platform |
| Rear shock absorber | Not Available |
| Saddle seat | Specialized Body Geometry Pro |
| Seat post extension | 30.9 (millimeters) Diameter Aluminum |
Trek Jack 1
General Infos| Model | Jack 1 |
| Manufacturer | Trek |
| Year of production | 2007 |
| Current price | Check price Here ==> |
| Color choice |
-Gloss Navy |
| Sizes |
- 13 (inches) - 15 (inches) - 17 (inches) |
Wheels And Breaking System
| Bike front tire | 26 X 2.40 (inches) Bontrager Earl |
| Bike rear tire | Not Available |
| Bike wheel size | 26 (inches) Wheels |
| Brakeset type | Shimano EF-50 Levers Tektro V Brakes |
| Hubs for disc brakes | Shimano M-475 Disc |
| Rims manufacturer | Bontrager Camino |
| Spoke nipples type | Not Available |
| Spoke wheel | Not Available |
Frame and Body Specs
| Frame materials | Alpha Aluminum |
| Frame type | TIG-welded |
| Handlebar construction | Bontrager Earl |
| Handlebar extender | Optional |
| Handlebar stem details | Bontrager Earl |
| Headset size | Semi-cartridge Aheadset |
Gearing Specifications
| Bicycle chain | Not Available |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 22/32/44 Teeth Shimano M-341 |
| Gear shift levers | Shimano EF-50 |
| Rear gear set | 11 - 32 Teeth 8-speed |
Trek Jack 1 Fork System Data
| Derailleur (Front) | Shimano C-050 |
| Derailleur (Rear) | Shimano Acera |
| Fork material | Single Crown Aluminum and steel |
| Fork type | 100 (millimeters) Travel RST Gila T7 |
Other Specs of Trek Jack 1
| Component group sets | Shimano Mix |
| Pedals details | Alloy Platform |
| Rear shock absorber | Not Available |
| Saddle seat | Bontrager Earl Jump |
| Seat post extension | Bontrager Sport |
Useful links and guides ....
- To know more about this exacte bike, Specialized provided us with the latest version of its Rockhopper bike manual
- Find All parts, tires and accessories of Specialized Rockhopper Mountain bike here
- Get your Trek Jack 1 manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Trek Jack 1 Mountain bike here