GT BUMP 2005 VS Hoffman SD-4 2001 specs comparison
GT Bump
General Infos| Model | Bump |
| Manufacturer | GT |
| Year of production | 2005 |
| Current price | Check price Here ==> |
| Color choice |
- Madness Pewter -Deep Artic Blue |
| Sizes |
- Not available |
| Sizes |
- Not available |
Wheels And Breaking System
| Bike front tire | Rear: 20 X 2.10 (inches) GT LP-IV Front: 20 X 2.20 (inches) GT 1453 |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Tektro 274A Rear Levers Tektro 907AD Rear Brakes |
| Hubs for disc brakes | 3/8 (inches) Axle Aluminum |
| Rims manufacturer | 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 | Chromoly 2-piece |
| Handlebar extender | Not Available |
| Handlebar stem details | GT Johnson III |
| Headset size | 1 1/8 (inches) Threadless Tange Seiki Fatty 22 |
Gearing Specifications
| Bicycle chain | 1/2 X 1/8 (inches) KMC Z410 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 39 Teeth GT Tubular Chromoly |
| Gear shift levers | Not Available |
| Rear gear set | 14 Teeth 1-speed |
GT Bump Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown Chromoly |
| Fork type | GT |
Other Specs of GT Bump
| Component group sets | Not Available |
| Pedals details | GT Dirt and Street |
| Rear shock absorber | Not Available |
| Saddle seat | GT-6 Original |
| Seat post extension | Aluminum Micro-adjust |
Hoffman SD-4
General Infos| Model | SD-4 |
| Manufacturer | Hoffman |
| Year of production | 2001 |
| Current price | Check price Here ==> |
| Color choice |
-Red and Chrome |
| Sizes |
- Pro |
Wheels And Breaking System
| Bike front tire | 20 X 1.95 (inches) Hoffman Bikes Skidmarks |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Dia-Compe MX-101 Levers Tektro 990 U-brake Brakes |
| Hubs for disc brakes | Keyin Aluminum |
| Rims manufacturer | 48-hole Hoffman Bikes HighRoller CP |
| Spoke nipples type | Aluminum Nipples |
| Spoke wheel | 2.0 (millimeters) Straight Gauge Steel |
Frame and Body Specs
| Frame materials | 4130 chromoly c |
| Frame type | TIG-welded |
| Handlebar construction | Hoffman Bikes Prodigy Bar |
| Handlebar extender | Optional |
| Handlebar stem details | HoffmanBikes SuperStem |
| Headset size | 1 1/8 (inches) Threadless YST |
Gearing Specifications
| Bicycle chain | 1/2 X 1/8 (inches) KMC 410 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | One Piece |
| Crankset parts and sizes | 44 Teeth 1-piece Chromoly 175 (millimeters) |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth 1-speed |
Hoffman SD-4 Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | 4130 chromoly c |
| Fork type | Hoffman Bikes Prodigy Forks |
Other Specs of Hoffman SD-4
| Component group sets | Not Available |
| Pedals details | Wellgo LU-313 |
| Rear shock absorber | Not Available |
| Saddle seat | Hoffman Bikes Logo |
| Seat post extension | 25.4 (millimeters) Diameter Hoffman Bikes Prodigy Post |
Related Bike comparison
GT Bump Mongoose FX-1
GT Bump Haro Supra
Hoffman SD-4 GT Bump
Hoffman SD-4 Schwinn Hydra Glide (01)
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 SD-4 manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Hoffman SD-4 Freestyle here