Specialized ROCKHOPPER 18 1994 VS Trek JET 20 2004 specs comparison
Specialized Rockhopper 18
General Infos| Model | Rockhopper 18 |
| Manufacturer | Specialized |
| Year of production | 1994 |
| Current price | Check price Here ==> |
| Color choice |
-Not found |
| Sizes |
- Boys - girls |
| Sizes |
- Boys - girls |
Wheels And Breaking System
| Bike front tire | 24 X 1.80 (inches) Specialized Cannibal |
| Bike rear tire | Not Available |
| Bike wheel size | 24 (inches) Wheels |
| Brakeset type | Levers Shimano TY21/Shimano TY22 Brakes |
| Hubs for disc brakes | Chrome-plated Steel |
| Rims manufacturer | 36-hole Alloy |
| Spoke nipples type | Not Available |
| Spoke wheel | Not Available |
Frame and Body Specs
| Frame materials | Chromoly Seat Tube and Hi-tensile Steel |
| Frame type | TIG-welded Steel |
| Handlebar construction | Steel |
| Handlebar extender | Not Available |
| Handlebar stem details | Steel |
| Headset size | Not Available |
Gearing Specifications
| Bicycle chain | Not Available |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 28/38/48 Teeth SR CFC-T405 |
| Gear shift levers | Grip Shift SRT-100i |
| Rear gear set | 14 - 28 Teeth 6-speed |
Specialized Rockhopper 18 Fork System Data
| Derailleur (Front) | Shimano TY20 |
| Derailleur (Rear) | Shimano TY20 |
| Fork material | Not Available |
| Fork type | Hi-tensile Steel |
Other Specs of Specialized Rockhopper 18
| Component group sets | Shimano and GripShift |
| Pedals details | Victor VP-870 |
| Rear shock absorber | Not Available |
| Saddle seat | Specialized Kids |
| Seat post extension | Steel |
Trek Jet 20
General Infos| Model | Jet 20 |
| Manufacturer | Trek |
| Year of production | 2004 |
| Current price | Check price Here ==> |
| Color choice |
- Red -Black and Silver |
| Sizes |
- Boys |
Wheels And Breaking System
| Bike front tire | 20 X 2.125 (inches) Kenda K-Rad |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Coaster Brake Rear |
| Hubs for disc brakes | Nutted Steel |
| Rims manufacturer | Chrome Steel |
| Spoke nipples type | Not Available |
| Spoke wheel | Straight Gauge Stainless Steel |
Frame and Body Specs
| Frame materials | Hi-tensile Steel |
| Frame type | TIG-welded |
| Handlebar construction | Rise Steel |
| Handlebar extender | Optional |
| Handlebar stem details | Steel |
| Headset size | 1 (inches) Threaded Steel |
Gearing Specifications
| Bicycle chain | 1/2 X 1/8 (inches) |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 32 Teeth Steel One-piece |
| Gear shift levers | Not Available |
| Rear gear set | 19 Teeth 1-speed |
Trek Jet 20 Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown Hi-tensile Steel |
| Fork type | Trek |
Other Specs of Trek Jet 20
| Component group sets | Not Available |
| Pedals details | Platform Resin |
| Rear shock absorber | Not Available |
| Saddle seat | Trek Jr |
| Seat post extension | Steel |
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Useful links and guides ....
- To know more about this exacte bike, Specialized provided us with the latest version of its Rockhopper 18 bike manual
- Find All parts, tires and accessories of Specialized Rockhopper 18 Youth here
- Get your Trek Jet 20 manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Trek Jet 20 Youth here