GT Bump 1999 Technical specs and features
| Brand | GT |
| Model | Bump |
| First production | 1999 |
| Bike category | Freestyle |
| Bike sub-category | Freestyle And Jumping |
| Bike Pricing | Check price Here ==> |
| Parts And Accessories | GT Bump Parts |
| Available Sizes | - Not available |
Wheels And Breaking System
| Bike front tire | Rear: 20 X 1.75 (inches) Powerlite Retro-Tread Front: 20 X 2.125 (inches) Powerlite Retro-Tread |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Dia-Compe MX-97 Rear Levers Dia-Compe 990 Rear Brakes |
| Hubs for disc brakes | GT Mohawk |
| Rims manufacturer | 48-hole Weinmann ZAC-X |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 2.0 (millimeters) Straight Gauge Steel |
Frame and Body Specifications
| Frame materials | Chromoly |
| Frame type | Welded |
| Handlebar construction | GT |
| Handlebar extender | Not Available |
| Handlebar stem details | GT Piston |
| Headset size | 1 1/8 (inches) Threadless Aheadset SX-1 |
Gearing Specs
| Bicycle chain | 1/2 X 1/8 (inches) |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | One Piece |
| Crankset parts and sizes | 44 Teeth GT 1-piece Chromoly |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth 1-speed |
GT Bump Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Oversize Unicrown Crown Chromoly |
| Fork type | GT |
Other Specs of GT Bump
| Component group sets | Not Available |
| Available colors | - Atomic Blue - Khaki |
| Weight | Not Available |
| Pedals details | GT Aluminum Platform |
| Rear shock absorber | Not Available |
| Saddle seat | GT |
| Seat post extension | 31.8 (millimeters) Diameter GT Chromoly Micro-adjust |
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GT produced the Bump bike in 1999 and can be classified as a Freestyle bicycle, this exact model costs in american market arround $316.99.
GT Freestyle Bump can be found in a few colors, among these colors Atomic Blue and Khaki .
This bike is equiped with Front: 20 x 2.125" Powerlite Retro-Tread tires and Steel spoke wheel while the rims are manufactured by Weinmann ZAC-X, 48-hole. GT equiped this exact model with Dia-Compe 990 rear brakes, Dia-Compe MX-97 rear levers braking system and GT Mohawk hubs.
To guarantee the comfiest ride GT used Chromoly material for the frame. GT high strength material is used on the handlebar of this Bump to ensure the perfect handling while the stems are made of GT Piston.
For the smoothest biking experience GT 1-piece chromoly, 44 teeth is used on this bicycle linked to 1/2 x 1/8" chain that is easily replaceable as stated by GT.
