GT BUMP 2007 VS Dirtmaster H.F.O. 1999 specs comparison
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➜ GT Bump price
➜ Dirtmaster H.F.O. price
GT Bump
General Infos| Model | Bump |
| Manufacturer | GT |
| Year of production | 2007 |
| Current price | 🛒 View Price → |
| 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 KonxsionFront: 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 LeversTektro |
| Hubs for disc brakes | Rear: GT Sealed CassetteFront: GT Aluminum Sealed |
| Rims manufacturer | 36-holeAlex 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 Teeth1-speed |
GT Bump Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown CrownChromoly |
| 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 |
Dirtmaster H.F.O.
General Infos| Model | H.F.O. |
| Manufacturer | Dirtmaster |
| Year of production | 1999 |
| Current price | 🛒 View Price → |
| Color choice | - Chrome-Plated- Red- Yellow-Black |
| Sizes | - Pro |
Wheels And Breaking System
| Bike front tire | 20 X 2.25 (inches) Kenda K-841 |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Dia-Compe Tech 99 LeversDia-Compe 990 Brakes |
| Hubs for disc brakes | Joy Tech Jy A085SBT |
| Rims manufacturer | 48-holeAlex Supra |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 2.0 (millimeters) Straight GaugeDa-Sen Stainless Steel |
Frame and Body Specs
| Frame materials | 4130 chromoly c |
| Frame type | TIG-welded |
| Handlebar construction | Dirtmaster Hoochie |
| Handlebar extender | Not Available |
| Handlebar stem details | Odyssey Bang |
| Headset size | 1 1/8 (inches) Threadless Aheadset SE-1 F and S With Odyssey Gyro Detangler |
Gearing Specifications
| Bicycle chain | 1/2 X 3/32 (inches)KMC 408H |
| Bottom bracket shell width | American 24tpi |
| Bottom bracket type | YST BB 621 |
| Crankset parts and sizes | 44 Teeth1-piece Chromoly 180 (millimeters) |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth1-speed |
Dirtmaster H.F.O. Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown4130 Chromoly |
| Fork type | Dirtmaster Street Fork |
Other Specs of Dirtmaster H.F.O.
| Component group sets | Not Available |
| Pedals details | Wellgo LU-313U |
| Rear shock absorber | Not Available |
| Saddle seat | Team Products Embroidered |
| Seat post extension | 25.4 (millimeters) DiameterPrimo Rod |
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 Dirtmaster H.F.O. manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Dirtmaster H.F.O. Freestyle here