Dirtmaster JUMP 1999 VS GT AIR 2007 specs comparison
Dirtmaster Jump
General Infos| Model | Jump |
| Manufacturer | Dirtmaster |
| Year of production | 1999 |
| Current price | Check price Here ==> |
| Color choice |
- Green -Chrome-Plated |
| Sizes |
- Pro |
| Sizes |
- Pro |
Wheels And Breaking System
| Bike front tire | 20 X 2.25 (inches) Cheng Shin M-110 |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Tektro RBP-341A Rear Levers Tektro 910A Rear Brakes |
| Hubs for disc brakes | Formula OV 31 |
| Rims manufacturer | 48-hole Alex X-303 |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 2.0 (millimeters) Straight Gauge Da-Sen Steel |
Frame and Body Specs
| Frame materials | 4130 chromoly c |
| Frame type | TIG-welded |
| Handlebar construction | SE Racing Rollbar |
| Handlebar extender | Not Available |
| Handlebar stem details | Kalloy MX-817 |
| Headset size | 1 1/8 (inches) Threadless Tioga TG |
Gearing Specifications
| Bicycle chain | 1/2 X 1/8 (inches) KMC 410 |
| Bottom bracket shell width | American 24tpi |
| Bottom bracket type | YST BB 621 |
| Crankset parts and sizes | 44 Teeth 1-piece Chromoly 180 (millimeters) |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth 1-speed |
Dirtmaster Jump Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown 4130 Chromoly |
| Fork type | Dirtmaster Dirt Fork |
Other Specs of Dirtmaster Jump
| Component group sets | Not Available |
| Pedals details | Wellgo LU-313 |
| Rear shock absorber | Not Available |
| Saddle seat | Team Products Embroidered |
| Seat post extension | 25.4 (millimeters) Diameter Steel Micro-adjust |
GT Air
General Infos| Model | Air |
| Manufacturer | GT |
| Year of production | 2007 |
| Current price | Check price Here ==> |
| Color choice |
-Brilliant Silver Metallic |
| Sizes |
- 20 wheel (inches) |
Wheels And Breaking System
| Bike front tire | 26 X 2.10 (inches) GT Air Bags |
| Bike rear tire | Not Available |
| Bike wheel size | 26 (inches) Wheels |
| Brakeset type | Tektro 289 Levers Tektro 907 U-brake Brakes |
| Hubs for disc brakes | Rear: Sealed Mech Freewheel Front: Sealed Mech |
| Rims manufacturer | ACS Mag Wheels |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | Straight Gauge |
Frame and Body Specs
| Frame materials | Hi-Tensile Steel |
| Frame type | TIG-welded |
| Handlebar construction | GT Dirt and street Hi-Ten |
| Handlebar extender | Optional |
| Handlebar stem details | GT Aluminum |
| Headset size | Steel 1 1/8 (inches) Threadless TH |
Gearing Specifications
| Bicycle chain | KMC Z410 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Ball Type Steel |
| Crankset parts and sizes | 170 (millimeters) and '07 Design 42T Steel GT Design 42 Teeth Forged Steel One Piece Crank |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth 1-speed |
GT Air Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown Steel |
| Fork type | GT Freestyle |
Other Specs of GT Air
| Component group sets | BMX Mix |
| Pedals details | Resin GT Jump Design |
| Rear shock absorber | Not Available |
| Saddle seat | GT Freestyle |
| Seat post extension | 25.4 (millimeters) Diameter Steel |
Useful links and guides ....
- To know more about this exacte bike, Dirtmaster provided us with the latest version of its Jump bike manual
- Find All parts, tires and accessories of Dirtmaster Jump Freestyle here
- Get your GT Air manual book version yo know further about this bike
- Saddles, tires And mechanical parts for GT Air Freestyle here