Hoffman Bikes MANTRA AL 2009 VS GT BUMP 2008 specs comparison
Hoffman Bikes Mantra AL
General Infos| Model | Mantra AL |
| Manufacturer | Hoffman Bikes |
| Year of production | 2009 |
| Current price | Check price Here ==> |
| Color choice |
-Gray |
| Sizes |
- 20.85 TT (inches) |
| Sizes |
- 20.85 TT (inches) |
Wheels And Breaking System
| Bike front tire | Rear: 20 X 1.95 (inches) HB Skidmark Front: 20 X 2.125 (inches) Kenda K-Rad |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Unavailable Rear Levers U-Brake Rear Brakes |
| Hubs for disc brakes | Rear: Sealed 14 (millimeters) Cassette Front: Alloy 3/8 (inches) |
| Rims manufacturer | 36-hole Rear: Alex Supra E Double Wall Front: Jalco Double Wall |
| Spoke nipples type | Not Available |
| Spoke wheel | Not Available |
Frame and Body Specs
| Frame materials | 4130 chromoly c |
| Frame type | TIG-welded |
| Handlebar construction | HB 2-piece Full Chromoly |
| Handlebar extender | Optional |
| Handlebar stem details | Not Available |
| Headset size | 1 1/8 (inches) FSA Impact |
Gearing Specifications
| Bicycle chain | Not Available |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Mid Sealed BB |
| Crankset parts and sizes | 27 Teeth 3 Piece Tubular Chromoly |
| Gear shift levers | Not Available |
| Rear gear set | 10 Teeth 1-speed |
Hoffman Bikes Mantra AL Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown Chromoly |
| Fork type | Hoffman |
Other Specs of Hoffman Bikes Mantra AL
| Component group sets | BMX |
| Pedals details | Alloy Platform |
| Rear shock absorber | Not Available |
| Saddle seat | HB Kevlar |
| Seat post extension | 25.4 (millimeters) Diameter Alloy Micro Adjust |
GT Bump
General Infos| Model | Bump |
| Manufacturer | GT |
| Year of production | 2008 |
| Current price | Check price Here ==> |
| Color choice |
- Navy and White -Off White and Orange |
| Sizes |
- Standard size for everyone |
Wheels And Breaking System
| Bike front tire | Rear: 20 (inches) Kenda Konxsion Front: 20 (inches) Kenda K-Rad |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Tektro 274A Rear Levers N and A Front and Tektro 907A Rear Brakes |
| Hubs for disc brakes | Rear: GT Sealed Cassette Front: GT Aluminum Sealed |
| Rims manufacturer | 36-hole |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 14ga. |
Frame and Body Specs
| Frame materials | GT Cro-moly BMX Dirt and street Design |
| Frame type | TIG-welded |
| Handlebar construction | GT Dirt and street Cr-mo |
| Handlebar extender | Optional |
| Handlebar stem details | GT FS Design |
| Headset size | 1 1/8 (inches) Tange Seiki Fatty 22 |
Gearing Specifications
| Bicycle chain | KMC Z410 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Ball Type With 8 Spline Cr-Mo Axle |
| Crankset parts and sizes | GT Tubular Cr-Mo 3pc. |
| Gear shift levers | Not Available |
| Rear gear set | 12 Teeth 1-speed |
GT Bump Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown Chromoly |
| Fork type | GT BMX Design |
Other Specs of GT Bump
| Component group sets | BMX |
| Pedals details | GT Dirt and Street Platform |
| Rear shock absorber | Not Available |
| Saddle seat | BMX Mini Street |
| Seat post extension | Aluminum Micro-adjust |
Useful links and guides ....
- To know more about this exacte bike, Hoffman Bikes provided us with the latest version of its Mantra AL bike manual
- Find All parts, tires and accessories of Hoffman Bikes Mantra AL BMX here
- Get your GT Bump manual book version yo know further about this bike
- Saddles, tires And mechanical parts for GT Bump BMX here
