GT BUMP 2007 VS Hoffman PRO DIRTY 1 THIRTY 2001 specs comparison
GT Bump
General Infos| Model | Bump |
| Manufacturer | GT |
| Year of production | 2007 |
| Current price | Check price Here ==> |
| Color choice |
- Matte Brick -Matte Navy Blue |
| Sizes |
- 20 wheel (inches) |
| Sizes |
- 20 wheel (inches) |
Wheels And Breaking System
| Bike front tire | Rear: 26 X 2.10 (inches) Kenda Konxsion Front: 26 X 2.125 (inches) Front: Kenda K-Rad |
| Bike rear tire | Not Available |
| Bike wheel size | 26 (inches) Wheels |
| Brakeset type | FX-330 Rear Brakes Tektro 274A Levers Tektro |
| Hubs for disc brakes | Rear: GT Sealed Cassette Front: GT Aluminum Sealed |
| Rims manufacturer | 36-hole Alex G22 |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 14ga. Straight Gauge |
Frame and Body Specs
| Frame materials | Chromoly |
| Frame type | TIG-welded |
| Handlebar construction | GT Dirt and street Cr-mo |
| Handlebar extender | Optional |
| Handlebar stem details | GT FS Design |
| Headset size | 1 1/8 (inches) Threadless Tange Seiki FATTY 22 |
Gearing Specifications
| Bicycle chain | KMC Z410 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Ball Type With 8 Spline Cr-Mo Axle |
| Crankset parts and sizes | GT Tubular Cr-Mo 3pc. |
| Gear shift levers | Not Available |
| Rear gear set | 12 Teeth 1-speed |
GT Bump Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown Chromoly |
| Fork type | '05 GT Dirt Jump |
Other Specs of GT Bump
| Component group sets | BMX Mix |
| Pedals details | Aluminum Body Cr-mo Alxe '05 GT Dirt and Street Platform Design |
| Rear shock absorber | Not Available |
| Saddle seat | Velo Mini Street |
| Seat post extension | Alloy Micro Adjust |
Hoffman Pro Dirty 1 Thirty
General Infos| Model | Pro Dirty 1 Thirty |
| Manufacturer | Hoffman |
| Year of production | 2001 |
| Current price | Check price Here ==> |
| Color choice |
- Dark Blue - Red -Black |
| Sizes |
- Pro |
Wheels And Breaking System
| Bike front tire | 20 X 1.95 (inches) Primo Knobby |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Dia-Compe Tech 99 Rear Levers DiaTech 996 U-Brake Rear Brakes |
| Hubs for disc brakes | HoffmanBikes Highroller |
| Rims manufacturer | 48-hole HoffmanBikes HighRoller Rim Cp |
| Spoke nipples type | Aluminum Nipples |
| Spoke wheel | 2.0 (millimeters) Straight Gauge Stainless Steel |
Frame and Body Specs
| Frame materials | 4130 chromoly c |
| Frame type | TIG-welded |
| Handlebar construction | Hoffman Bikes Jumping Bar |
| Handlebar extender | Not Available |
| Handlebar stem details | Hoffman Bikes Fist |
| Headset size | 1 1/8 (inches) Threadless Dia-Compe Tank |
Gearing Specifications
| Bicycle chain | 1/2 X 1/8 (inches) KMC 410 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 44 Teeth Primo Powerbite 3-piece |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth 1-speed |
Hoffman Pro Dirty 1 Thirty Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | 4130 chromoly c |
| Fork type | HoffmanBikes Dirty1Thirty Superfork |
Other Specs of Hoffman Pro Dirty 1 Thirty
| Component group sets | Not Available |
| Pedals details | Wellgo LU-313 |
| Rear shock absorber | Not Available |
| Saddle seat | Hoffman Bikes Flame Seat |
| Seat post extension | 25.4 (millimeters) Diameter Chromoly Micro-adjust |
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Useful links and guides ....
- To know more about this exacte bike, GT provided us with the latest version of its Bump bike manual
- Find All parts, tires and accessories of GT Bump Freestyle here
- Get your Hoffman Pro Dirty 1 Thirty manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Hoffman Pro Dirty 1 Thirty Freestyle here