GT THUMPER 2004 VS Kona COWAN 2008 specs comparison
GT Thumper
General Infos| Model | Thumper |
| Manufacturer | GT |
| Year of production | 2004 |
| Current price | Check price Here ==> |
| Color choice |
-Blue |
| Sizes |
- One |
| Sizes |
- One |
Wheels And Breaking System
| Bike front tire | Rear: 20 X 2.10 (inches) GT LP-4 Front: 20 X 2.20 (inches) GT 1453 |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Tektro 273A Rear Levers Tektro FX-11 U-brake Rear Brakes |
| Hubs for disc brakes | 14 (millimeters) Axle Aluminum |
| Rims manufacturer | 36-hole Alex DX-2418 |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 14ga. Straight Gauge Stainless Steel |
Frame and Body Specs
| Frame materials | Chromoly |
| Frame type | TIG-welded |
| Handlebar construction | GT BMX |
| Handlebar extender | Not Available |
| Handlebar stem details | GT Piston |
| Headset size | 1 1/8 (inches) Threadless Tien Hsin With SST Oryg |
Gearing Specifications
| Bicycle chain | 1/2 X 3/16 (inches) KMC Z510H |
| Bottom bracket shell width | American |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 39 Teeth GT 3-piece Chromoly |
| Gear shift levers | Not Available |
| Rear gear set | 14 Teeth 1-speed |
GT Thumper Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown Chromoly |
| Fork type | GT |
Other Specs of GT Thumper
| Component group sets | Not Available |
| Pedals details | GT BMX Design Aluminum |
| Rear shock absorber | Not Available |
| Saddle seat | GT Launch Pad |
| Seat post extension | Steel Micro-adjust |
Kona Cowan
General Infos| Model | Cowan |
| Manufacturer | Kona |
| Year of production | 2008 |
| Current price | Check price Here ==> |
| Color choice |
-Silver and White Matte |
| Sizes |
- 13 (inches) - 14 (inches) - 16 (inches) - 17 (inches) |
Wheels And Breaking System
| Bike front tire | 26 X 2.35 (inches) Maxxis High Roller |
| Bike rear tire | Not Available |
| Bike wheel size | 26 (inches) Wheels |
| Brakeset type | Hayes Stroker Trail Hydraulic Levers Hayes Stroker Trail With V6 Rotor Brakes |
| Hubs for disc brakes | Rear: Shimano M525 Disc Front: KK Disc 20 (millimeters) |
| Rims manufacturer | Sun EQ 3.1SL |
| Spoke nipples type | Not Available |
| Spoke wheel | 14ga. Stainless Steel |
Frame and Body Specs
| Frame materials | Kona Clump 7005 Aluminum |
| Frame type | TIG-welded |
| Handlebar construction | FSA Maximus Riser OS |
| Handlebar extender | Optional |
| Handlebar stem details | FSA Gap OS |
| Headset size | FSA Integrated |
Gearing Specifications
| Bicycle chain | Shimano HG50 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | FSA Mega EXO |
| Crankset parts and sizes | 24/36 Teeth FSA Moto-X MegaExo |
| Gear shift levers | Shimano Alivio |
| Rear gear set | 11 - 32 Teeth 8-speed |
Kona Cowan Fork System Data
| Derailleur (Front) | Shimano Alivio |
| Derailleur (Rear) | Shimano Alivio |
| Fork material | Single Crown Steel |
| Fork type | 100 (millimeters) Travel Marzocchi Dirt Jumper 2 With QR20 |
Other Specs of Kona Cowan
| Component group sets | Mountain Mix |
| Pedals details | Kona Jackshit |
| Rear shock absorber | Not Available |
| Saddle seat | Kona Dirt Jump |
| Seat post extension | FSA Maximus Dbl |
Related Bike comparison
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Useful links and guides ....
- To know more about this exacte bike, GT provided us with the latest version of its Thumper bike manual
- Find All parts, tires and accessories of GT Thumper Freestyle here
- Get your Kona Cowan manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Kona Cowan Freestyle here