Bicycle Archive · Specification reportBicycle Archive · Specification reportVelopedia Archive ID 91772
| Model year | 2002 |
|---|---|
| Brand | Diamondback |
| Model | Jr. Viper |
| Bicycle type | BMX |
| Archive ID | 91772 |
| Original MSRP | $130.00 |
| Colors | Black, Burn |
| Sizes | Juvenile |
| Frame construction | TIG-welded |
|---|---|
| Frame material | Hi-tensile steel |
| Fork material | Hi-tensile steel, unicrown crown |
| Rear shock | N/A |
| Component group | N/A |
|---|---|
| Shifters | N/A |
| Front derailleur | N/A |
| Rear derailleur | N/A |
| Crankset | 1-piece 5 1/2", 36 teeth |
| Bottom bracket | Steel |
| Rear cogs | 1-speed, 18 teeth |
| Chain | KMC Z-410, 1/2 x 1/8" |
| Pedals | Wellgo LU-205 |
| Brakes | Aluminum linear-pull rear brakes, aluminum rear levers |
|---|
| Headset | 1" steel |
|---|---|
| Handlebar | Steel BMX |
| Handlebar extensions | N/A |
| Stem | Aluminum 4 bolt |
| Saddle | Diamondback BMX |
| Seatpost | Steel, chrome plated, 25.4mm diameter |
| Hubs | Front: steel, nutted, Rear: steel, coaster brake |
|---|---|
| Rims | Steel, 36-hole |
| Spokes | Stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke nipples | Brass nipples |
| Front tire | Front: 20 x 2.125" Kenda K-50, Rear: 20 x 1.75" Kenda K-50 |
| Wheel size | 20" wheels |
| Top tube | 488.9 mm |
|---|---|
| Head-tube angle | 71° |
| Seat-tube angle | 69° |
| Chainstay / rear center | 374.6 mm |
| Wheelbase | 894.1 mm |
| Fork offset / rake | 30.5 mm |
Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 28, 2026.