Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
2013 GT Timberline 20
Value Guide market data · 2013 GT Timberline 20
12-month trend
— %
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2013 GT Timberline 20
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Timberline model years
2013 Timberline 20 lineup
Overview
About this bike
2013 GT Timberline 20 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Frame Tubing Material
- Aluminum
- Fork Material
- SR Suntour M3020 75mm
Drivetrain
- Groupset
- 2013 GT Timberline 20
- Shift Levers
- Shimano EF51 EZ Fire
- Crankset
- SR Suntour XCC 42/34/24t
- Bottom Bracket
- Sealed cartridge
- Chain
- KMC Z72
Brakes
- Brakeset
- Linear pull
Cockpit
- Seatpost
- alloy
- Saddle
- GT MTB
- Handlebar
- Alloy Riser Bar
- Handlebar Stem
- Alloy
- Headset
- 1 1/8inch threadless
Wheels & Tires
- Tires
- All Terrain 29x2.1
Pedals
- Pedals
- GT Slim Line Flat
Accessories
- Colors
- Black, Blue, White
Weight & Sizing
- Sizes
- LG, MD, SM, XL
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.
Inspection
Suspension service
Confirm fork lowers and rear shock service intervals; ask for the most recent service receipts.
Inspection
Frame pivots & bearings
Cycle the suspension off the bike to feel for play, grit, or noise in pivot bearings.