GT BUMP 1999 VS Hoffman EP 1998 specs comparison
GT Bump
General Infos| Model | Bump |
| Manufacturer | GT |
| Year of production | 1999 |
| Current price | Check price Here ==> |
| Color choice |
- Khaki -Atomic Blue |
| Sizes |
- Not 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 Specs
| 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 Specifications
| 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 |
| Pedals details | GT Aluminum Platform |
| Rear shock absorber | Not Available |
| Saddle seat | GT |
| Seat post extension | 31.8 (millimeters) Diameter GT Chromoly Micro-adjust |
Hoffman Ep
General Infos| Model | Ep |
| Manufacturer | Hoffman |
| Year of production | 1998 |
| Current price | Check price Here ==> |
| Color choice |
- dark blue - translucent white -Chrome-plated |
| Sizes |
- Pro |
Wheels And Breaking System
| Bike front tire | 20 X 1.95 (inches) HB Skidmark |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Dia-Tech MX-97 Levers Dia-Compe 990 Brakes |
| Hubs for disc brakes | Gack |
| Rims manufacturer | 48-hole Gack High Roller |
| Spoke nipples type | Alloy 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 | HB Low Drag 2 4130 |
| Handlebar extender | Not Available |
| Handlebar stem details | HB Superstem |
| Headset size | 1 1/8 (inches) Threadless Aheadset With SST Oryg Detangler |
Gearing Specifications
| Bicycle chain | 1/2 X 1/8 (inches) |
| Bottom bracket shell width | American |
| Bottom bracket type | One Piece |
| Crankset parts and sizes | 38 Teeth 1-piece Chromoly |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth 1-speed |
Hoffman Ep Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown 4130 Chromoly |
| Fork type | HB Ep |
Other Specs of Hoffman Ep
| Component group sets | Not Available |
| Pedals details | Wellgo LU-313 |
| Rear shock absorber | Not Available |
| Saddle seat | HB |
| Seat post extension | 22.2 (millimeters) Diameter HB 4130 |
-1998-specs.jpg)
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 Ep manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Hoffman Ep Freestyle here