Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
2015 GT Speed Series Pro 24-inch
Value Guide market data · 2015 GT Speed Series Pro 24-inch
12-month trend
— %
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2015 GT Speed Series Pro 24-inch
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Speed model years
2021$986 - $1,145▼ 30% vs. 2015
2020$814 - $945▼ 42% vs. 2015
2019$781 - $907▼ 45% vs. 2015
2018$865 - $1,004▼ 39% vs. 2015
2016$1,116 - $1,296▼ 21% vs. 2015
2015$1,414 - $1,642Currently viewing
2014$1,414 - $1,6420% vs. 2015
2013$1,135 - $1,318▼ 20% vs. 2015
2012$1,074 - $1,247▼ 24% vs. 20152000$747 - $867▼ 47% vs. 20151999$1,060 - $1,231▼ 25% vs. 2015.jpg)
1998$1,171 - $1,360▼ 17% vs. 2015
1997$1,228 - $1,426▼ 13% vs. 20151996$763 - $886▼ 46% vs. 20152015 Speed Series Pro 24-inch lineup
Overview
About this bike
2015 GT Speed Series Pro 24-inch value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- GT chromoly
- Fork Brand & Model
- GT chromoly
- Frame
- GT Speed Metal hydroformed butted-aluminum
- Frame Construction
- GT Speed Metal hydroformed butted-aluminum
Drivetrain
- Groupset
- 2015 GT Speed Series Pro 24-inch
- Bottom Bracket
- BB30
- Chainrings
- 36T
- Crankset
- GT hollow-forged 2-piece aluminum, 175mm
- Freewheel
- 16T
Brakes
- Brake Levers
- Promax
- Brakes
- Promax
Cockpit
- Handlebar
- GT Interceptor, chromoly
- Saddle
- SDG Patriot I-Beam
- Seatpost
- SDG I-Beam
- Stem
- GT CNC Race
- Grips
- GT DOHC
Wheels & Tires
- Hubs
- GT Superlace, aluminum
- Spokes
- 15-gauge
- Tires
- Tioga Power Block, 24 x 1.75
- Wheel Set
- Front: Alienation Deviant: Rear: Alienation 440
Pedals
- Pedals
- GT Slim Profile
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.