GT BUMP 2003 VS Hoffman Bikes RHYTHM 18 2005 specs comparison
GT Bump
General Infos| Model | Bump |
| Manufacturer | GT |
| Year of production | 2003 |
| Current price | Check price Here ==> |
| Color choice |
- Yellow -Blue |
| Sizes |
- One |
| Sizes |
- One |
Wheels And Breaking System
| Bike front tire | 20 X 2.10 (inches) GT LP-4 |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Tektro 274A Rear Levers Tektro 907A U-brake Rear Brakes |
| Hubs for disc brakes | 14 (millimeters) Axle Aluminum |
| Rims manufacturer | 36-hole Alex G22 |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 14ga. Straight Gauge Stainless Steel |
Frame and Body Specs
| Frame materials | Chromoly Main Triangle and hi-tensile Steel Rear Stays |
| Frame type | TIG-welded |
| Handlebar construction | GT BMX |
| Handlebar extender | Not Available |
| Handlebar stem details | GT Piston |
| Headset size | 1 1/8 (inches) Threadless Victor VP-A74F |
Gearing Specifications
| Bicycle chain | 1/2 X 3/16 (inches) KMC 410 |
| Bottom bracket shell width | American |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 39 Teeth GT 3-piece 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 Johnson Design |
| Rear shock absorber | Not Available |
| Saddle seat | 9 (millimeters) Rails GT Jr Jump |
| Seat post extension | Steel Micro-adjust |
Hoffman Bikes Rhythm 18
General Infos| Model | Rhythm 18 |
| Manufacturer | Hoffman Bikes |
| Year of production | 2005 |
| Current price | Check price Here ==> |
| Color choice |
-Not found |
| Sizes |
- Junior |
Wheels And Breaking System
| Bike front tire | 18 X 1.95 (inches) Hoffman Skid Mark |
| Bike rear tire | Not Available |
| Bike wheel size | 18 (inches) Wheels |
| Brakeset type | Tektro 289A Rear Levers Tektro 907A U-brake Rear Brakes |
| Hubs for disc brakes | 14 (millimeters) Axle 14 (millimeters) Axle Flip-flop Rear: Aluminum Front: Aluminum |
| Rims manufacturer | 36-hole Jalco |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 14ga. Straight Gauge UCP |
Frame and Body Specs
| Frame materials | Down Tube and hi-tensile Steel Chromoly Top Tube |
| Frame type | TIG-welded |
| Handlebar construction | Hoffman Mini 2-piece |
| Handlebar extender | Not Available |
| Handlebar stem details | Hoffman Block Stem |
| Headset size | 1 1/8 (inches) Threadless Cane Creek |
Gearing Specifications
| Bicycle chain | 1/2 X 1/8 (inches) KMC 410 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 39 Teeth 3-piece Aluminum |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth 1-speed |
Hoffman Bikes Rhythm 18 Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown 4130 Chromoly |
| Fork type | Hoffman |
Other Specs of Hoffman Bikes Rhythm 18
| Component group sets | Not Available |
| Pedals details | Wellgo Aluminum |
| Rear shock absorber | Not Available |
| Saddle seat | Hoffman 8 (millimeters) |
| Seat post extension | 25.4 (millimeters) Diameter Steel |
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 Bikes Rhythm 18 manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Hoffman Bikes Rhythm 18 Freestyle here