Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
2003 Diamondback Octane 20
Value Guide market data · 2003 Diamondback Octane 20
12-month trend
— %
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2003 Diamondback Octane 20
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Octane model years
2003 Octane 20 lineup
Overview
About this bike
2003 Diamondback Octane 20 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Frame Construction
- TIG-welded
- Frame Tubing Material
- Hi-tensile steel, oversize
- Fork Brand & Model
- RST 181 CL, 50mm travel
- Fork Material
- Aluminum, single crown
- Rear Shock
- Not applicable
Drivetrain
- Groupset
- 2003 Diamondback Octane 20
- Component Group
- Juvenile Mix
- Shift Levers
- Shimano Revo
- Crankset
- 1-piece 5 1/2inch, 40 teeth
- Bottom Bracket
- One piece, one-piece spindle
- Rear Cogs
- 6-speed, 14 - 28 teeth
- Chain
- KMC Z51, 1/2 x 3/32inch
Brakes
- Brakeset
- ProMax linear-pull brakes, ProMax alloy levers
Cockpit
- Seatpost
- Aluminum, 25.6mm diameter
- Saddle
- Padded saddle
- Handlebar
- Steel
- Handlebar Stem
- Steel
- Headset
- 1 1/8inch threadless FSA
Wheels & Tires
- Hubs
- Steel, nutted
- Rims
- Alex aluminum, 36-hole
- Tires
- 20 x 1.95inch Kenda K-850
- Spoke Brand
- UCP, 14ga. (2.0mm) straight gauge
- Spoke Nipples
- Brass nipples
Pedals
- Pedals
- Wellgo resin
Accessories
- Colors
- Dog-Gone Berry, Hi-Ho Silver
- BB Shell Width
- American
- Extensions
- Not included
Weight & Sizing
- Sizes
- 20inch Boys, 20inch Girls
Frame sizing
XS4'10"-5'2"
S5'2"-5'6"
M5'6"-5'10"
L5'10"-6'2"
XL6'2"-6'6"
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.