Robinson DEFENDER 1999 VS GT POWER SERIES JR 2011 specs comparison
Robinson Defender
General Infos| Model | Defender |
| Manufacturer | Robinson |
| Year of production | 1999 |
| Current price | Check price Here ==> |
| Color choice |
-Graphite |
| Sizes |
- Boys |
| Sizes |
- Boys |
Wheels And Breaking System
| Bike front tire | Rear: 20 X 1.75 (inches) Tioga Comp III Front: 20 X 2.125 (inches) Tioga Comp III |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Tektro Linear-pull Rear Levers Tektro Linear-pull Rear Brakes |
| Hubs for disc brakes | GT Mohawk |
| Rims manufacturer | Weinmann ZAC-X |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 2.0 (millimeters) Straight Gauge Steel |
Frame and Body Specs
| Frame materials | 6061 T6 Aluminum |
| Frame type | Welded |
| Handlebar construction | Dyno Expert |
| Handlebar extender | Not Available |
| Handlebar stem details | Alloy Ahead Type |
| 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 |
Robinson Defender Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Unicrown Crown Chromoly |
| Fork type | GT |
Other Specs of Robinson Defender
| Component group sets | Not Available |
| Pedals details | GT Aluminum Platform |
| Rear shock absorber | Not Available |
| Saddle seat | Chromoly Rails SDG Slim Jim Kevlar |
| Seat post extension | GT Aluminum Micro-adjust |
GT Power Series JR
General Infos| Model | Power Series JR |
| Manufacturer | GT |
| Year of production | 2011 |
| Current price | Check price Here ==> |
| Color choice |
-White and blue |
| Sizes |
- Not available |
Wheels And Breaking System
| Bike front tire | 20 X 1 3/8 (inches) Kenda Small Block 8 |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Unavailable Front and Mini BMX Rear Levers Unavailable Front and Tektro 926AL Rear Brakes |
| Hubs for disc brakes | Rear: Joy Tech 21 Front: GT BMX Race |
| Rims manufacturer | 28-hole Jalco GT-02T |
| Spoke nipples type | Brass |
| Spoke wheel | 15ga. |
Frame and Body Specs
| Frame materials | 6061-T6 Aluminum |
| Frame type | Aluminum |
| Handlebar construction | GT BMX |
| Handlebar extender | Optional |
| Handlebar stem details | Mini BMX |
| Headset size | 1 (inches) Integrated Sealed |
Gearing Specifications
| Bicycle chain | KMC Z510 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Euro |
| Crankset parts and sizes | 39T Teeth Aluminum 3pc. |
| Gear shift levers | Not Available |
| Rear gear set | 16 teeth c |
GT Power Series JR Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Not Available |
| Fork material | Steel |
| Fork type | GT BMX |
Other Specs of GT Power Series JR
| Component group sets | BMX Mix |
| Pedals details | Aluminum |
| Rear shock absorber | Not Available |
| Saddle seat | GT Mini Design |
| Seat post extension | 22.2 (millimeters) Diameter Aluminum |
Useful links and guides ....
- To know more about this exacte bike, Robinson provided us with the latest version of its Defender bike manual
- Find All parts, tires and accessories of Robinson Defender BMX here
- Get your GT Power Series JR manual book version yo know further about this bike
- Saddles, tires And mechanical parts for GT Power Series JR BMX here
