GT BUMP 2009 VS Robinson JR. 1997 specs comparison
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➜ GT Bump price
➜ Robinson Jr. price
GT Bump
General Infos| Model | Bump |
| Manufacturer | GT |
| Year of production | 2009 |
| Current price | 🛒 View Price → |
| Color choice | - Purple-Light Green |
| Sizes | - 21.1 TT (inches) |
| Sizes | - 21.1 TT (inches) |
Wheels And Breaking System
| Bike front tire | Rear: 20 X 2.10 (inches) Kenda KiniptionFront: 20 X 2.125 (inches) Kenda K-Rad |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Tektro 274A Rear LeversTektro 907A U-brake Rear Brakes |
| Hubs for disc brakes | Rear: GT Sealed CassetteFront: GT Aluminum Sealed |
| Rims manufacturer | 32-hole and 36-holeAlienation PBR |
| Spoke nipples type | Brass |
| Spoke wheel | 14ga. Stainless |
Frame and Body Specs
| Frame materials | Chromoly Main Triangle |
| 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 Z510 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Mid BB |
| Crankset parts and sizes | 33 TeethGT Tubular Cr-Mo 3pc. |
| Gear shift levers | Not Available |
| Rear gear set | 12 Teeth1-speed |
GT Bump Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown CrownChromoly |
| Fork type | GT Dirt and Street |
Other Specs of GT Bump
| Component group sets | BMX |
| Pedals details | GT Dirt and Street Platform |
| Rear shock absorber | Not Available |
| Saddle seat | GT Slim |
| Seat post extension | Aluminum Micro-adjust Double Bolt |
Robinson Jr.
General Infos| Model | Jr. |
| Manufacturer | Robinson |
| Year of production | 1997 |
| Current price | 🛒 View Price → |
| Color choice | -Ball burnished |
| Sizes | - Boys |
Wheels And Breaking System
| Bike front tire | 20 X 1 1/8 (inches) GT AA Pro Kevlar |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Dia-Compe MX-122 Jr. LeversDia-Compe Aluminum Side-pull Caliper Rear Brakes |
| Hubs for disc brakes | GT Mohawk |
| Rims manufacturer | 36-holeAraya |
| Spoke nipples type | Alloy Nipples |
| Spoke wheel | 2.0 (millimeters) Straight GaugeSteel |
Frame and Body Specs
| Frame materials | Aluminum |
| Frame type | TIG-welded |
| Handlebar construction | Robinson Aluminum |
| Handlebar extender | Not Available |
| Handlebar stem details | GT Aluminum |
| Headset size | 1 (inches) Threadless Steel |
Gearing Specifications
| Bicycle chain | 1/2 X 3/32 (inches)KMC 410 |
| Bottom bracket shell width | 68 (millimeters) English |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 39 Teeth3-piece Aluminum |
| Gear shift levers | Not Available |
| Rear gear set | 16 Teeth1-speed |
Robinson Jr. Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown CrownChromoly |
| Fork type | Robinson |
Other Specs of Robinson Jr.
| Component group sets | Not Available |
| Pedals details | GT Aluminum Platforms |
| Rear shock absorber | Not Available |
| Saddle seat | GT Plastic |
| Seat post extension | AluminumPillar |
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 BMX here
- Get your Robinson Jr. manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Robinson Jr. BMX here