Trek 3900 DISC 2011 VS Electra BOMBER 21 1998 specs comparison
Trek 3900 Disc
General Infos| Model | 3900 Disc |
| Manufacturer | Trek |
| Year of production | 2011 |
| Current price | Check price Here ==> |
| Color choice |
-Deep Blue |
| Sizes |
- 13 (inches) - 16 (inches) - 18 (inches) - 19.5 (inches) - 21 (inches) - 22.5 (inches) |
| Sizes |
- 13 (inches) - 16 (inches) - 18 (inches) - 19.5 (inches) - 21 (inches) - 22.5 (inches) |
Wheels And Breaking System
| Bike front tire | 26 X 2.0 (inches) Bontrager LT3 |
| Bike rear tire | Not Available |
| Bike wheel size | 26 (inches) Wheels |
| Brakeset type | Shimano EF50 Levers Tektro Novela Brakes |
| Hubs for disc brakes | Rear: Shimano Alloy M475 Front: Formula DC20 |
| Rims manufacturer | 36-hole Bontrager 550 |
| Spoke nipples type | Not Available |
| Spoke wheel | Not Available |
Frame and Body Specs
| Frame materials | Alloy |
| Frame type | TIG-welded |
| Handlebar construction | Bontrager Approved Riser |
| Handlebar extender | Optional |
| Handlebar stem details | Bontrager Approved |
| Headset size | 1 1/8 (inches) Threadless Semi Integrated |
Gearing Specifications
| Bicycle chain | Not Available |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 24/34/42 Teeth Shimano M171 |
| Gear shift levers | Shimano EF51 |
| Rear gear set | 11 - 32 Teeth 8-speed |
Trek 3900 Disc Fork System Data
| Derailleur (Front) | Shimano M190 |
| Derailleur (Rear) | Shimano M360 |
| Fork material | Single |
| Fork type | 100 (millimeters) Travel SR Suntour XCT |
Other Specs of Trek 3900 Disc
| Component group sets | Shimano Mix |
| Pedals details | Wellgo Nylon Platform |
| Rear shock absorber | Not Available |
| Saddle seat | Bontager SSR |
| Seat post extension | 31.6 (millimeters) Diameter Bontrager SSR |
Electra Bomber 21
General Infos| Model | Bomber 21 |
| Manufacturer | Electra |
| Year of production | 1998 |
| Current price | Check price Here ==> |
| Color choice |
-Electric red |
| Sizes |
- 18.5 (inches) |
Wheels And Breaking System
| Bike front tire | 26 X 2.10 (inches) EBC All Terrain |
| Bike rear tire | Not Available |
| Bike wheel size | 26 (inches) Wheels |
| Brakeset type | Tektro RBP-375A Levers Tektro 823 Linear-pull Brakes |
| Hubs for disc brakes | Shimano AceraX |
| Rims manufacturer | 36-hole EBC TA-8 Aluminum |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 2.0 (millimeters) Straight Gauge Stainless Steel |
Frame and Body Specs
| Frame materials | 4130 Chromoly Main Triangle and hi-tensile Steel Rear Stays |
| Frame type | TIG-welded |
| Handlebar construction | Kalloy Alloy Riser |
| Handlebar extender | Not Available |
| Handlebar stem details | Kalloy Aluminum |
| Headset size | 1 (inches) Threadless YST |
Gearing Specifications
| Bicycle chain | 1/2 X 3/32 (inches) |
| Bottom bracket shell width | 68 (millimeters) English |
| Bottom bracket type | Shimano BB-LP26 |
| Crankset parts and sizes | 24/34/42 Teeth Shimano Alivio |
| Gear shift levers | Shimano STX RapidFire SL |
| Rear gear set | 11 - 30 Teeth 7-speed |
Electra Bomber 21 Fork System Data
| Derailleur (Front) | Top-pull Shimano AceraX Top-swing |
| Derailleur (Rear) | Shimano Alivio |
| Fork material | Triple-clamp Crown Aluminum and chromoly |
| Fork type | RST 280 |
Other Specs of Electra Bomber 21
| Component group sets | Shimano Alivio and AceraX |
| Pedals details | Wellgo Resin and aluminum |
| Rear shock absorber | Not Available |
| Saddle seat | EBC Performance |
| Seat post extension | 26.8 (millimeters) Diameter Kalloy Aluminum Micro-adjust |
Useful links and guides ....
- To know more about this exacte bike, Trek provided us with the latest version of its 3900 Disc bike manual
- Find All parts, tires and accessories of Trek 3900 Disc Mountain bike here
- Get your Electra Bomber 21 manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Electra Bomber 21 Mountain bike here