A great bike for kids ready for longer distances and more independence, the Diamondback Jr. Viper 20 in. boys' bike is ready to roll to school, follow along on the riverside path or hit the BMX park.
- Sturdy steel frame and fork are built to handle the rigors of riding
- Single-speed drivetrain offers simplicity and low maintenance
- Linear-pull rear brake provides stopping power when needed
- Stout BMX 20 in. wheels are outfitted with Comp III style tires for all-around performance
- NOTE: Specs and images are subject to change based on component availability
Imported.
This bike comes with Coast to Coast Support, which includes:
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
View all Diamondback- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
| Best Use | Cycling |
|---|---|
| Frame | DB high-tensile steel |
| Bike Suspension | No Suspension |
| Fork | BMX high-tensile steel |
| Crankset | 1-piece steel, 36t |
| Bottom Bracket | Loose ball |
| Rear Cogs | 18t freewheel |
| Brake Type | Coaster |
| Brakes | Rush V-brake |
| Brake Levers | Rush RX2.1 |
| Rims | Alloy |
| Front Hub | Steel, 36h |
| Rear Hub | Steel, 36h |
| Wheel Size | 20 inches |
| Tires | Comp III Style, 20x1.75 |
| Handlebar Shape | BMX Bar |
| Handlebar | Steel BMX |
| Stem | Alloy quill |
| Seat Post | Steel pillar |
| Saddle | DB BMX Padded |
| Pedals | Resin platform |
| Headset | Threaded steel |
| Chain | KMC Z410 |
| Weight | 26 lbs. 3 oz. |
| Bike Weight | Bike weight is based on median size, as sold, or the average of two median sizes. |
| Gender | Boys' |