Bicycle Archive · Specification reportBicycle Archive · Specification report2004 Diamondback Octane 20 · 2003 Diamondback Octane 20
| Specification | 2004 Diamondback Octane 20 | 2003 Diamondback Octane 20 |
|---|---|---|
| Overview | ||
| Model year | 2004 | 2003 |
| Brand | Diamondback | Diamondback |
| Model | Octane 20 | Octane 20 |
| Bicycle type | Juvenile mountain bike, suspension | Juvenile mountain bike, suspension |
| Archive ID | 31701 | 39381 |
| Original MSRP | $165.00 | $164.99 |
| Colors | Black/Red (Boys), Periwinkle/Silver (Girls) | Dog-Gone Berry, Hi-Ho Silver |
| Sizes | 20", Boys and Girls | 20" Boys, 20" Girls |
| Frameset | ||
| Frame construction | TIG-welded | TIG-welded |
| Frame material | Aluminum | Hi-tensile steel, oversize |
| Fork | SR Suntour M-2000, 20", 30mm | RST 181 CL, 50mm travel |
| Fork material | Aluminum, single crown | Aluminum, single crown |
| Rear shock | N/A | N/A |
| Drivetrain | ||
| Component group | Mountain Mix | Juvenile Mix |
| Shifters | Shimano Revo, Right Only | Shimano Revo |
| Front derailleur | N/A | N/A |
| Rear derailleur | Shimano Tourney TX-30 | Shimano Tourney TY-22 |
| Crankset | OPC w/chainguard | 1-piece 5 1/2", 40 teeth |
| Bottom bracket | One piece | One piece, one-piece spindle |
| BB shell width | — | American |
| Rear cogs | 6-speed, 14 - 28 teeth | 6-speed, 14 - 28 teeth |
| Chain | KMC, 1/2 x 3/32" | KMC Z51, 1/2 x 3/32" |
| Pedals | BMX style resin | Wellgo resin |
| Brakes | ||
| Brakes | Coaster w/aluminum linear-pull rear brakes, resin/aluminum, w/reach adjust rear levers | ProMax linear-pull brakes, Promax alloy levers |
| Cockpit & contact points | ||
| Headset | 1 1/8" Aheadset | 1 1/8" threadless FSA |
| Handlebar | Jr. ATB Riser | Steel |
| Handlebar extensions | Not included | Not included |
| Stem | Alloy, adjustable rise | Steel |
| Saddle | DB Jr. ATB Padded | Padded saddle |
| Seatpost | Steel Post | Aluminum, 25.6mm diameter |
| Wheels & tires | ||
| Hubs | Front: Steel, nutted, Rear: steel, coaster brake | Steel, nutted |
| Rims | Alloy MTB, 36-hole | Alex aluminum, 36-hole |
| Spokes | UCP, 14ga. (2.0mm) straight gauge | UCP, 14ga. (2.0mm) straight gauge |
| Spoke nipples | — | Brass nipples |
| Front tire | 20 x 2.00" Jr ATB | 20 x 1.95" Kenda K-850 |
| Wheel size | 20" wheels | 20" wheels |
One selected size or frame position per bicycle, matching the comparison dropdown choices used when Print / PDF was opened.
| Measurement | 2004 Diamondback Octane 20 | 2003 Diamondback Octane 20 |
|---|---|---|
| Selected size / position | — | Legacy reference |
| Head-tube angle | — | 70° |
| Seat-tube angle | — | 71° |
| Chainstay / rear center | — | 381 mm |
| Wheelbase | — | 883.9 mm |
| Fork offset / rake | — | 38.1 mm |
Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on November 13, 2026.