Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
2015 GT Speed Series Pro XL
Value Guide market data · 2015 GT Speed Series Pro XL
12-month trend
— %
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2015 GT Speed Series Pro XL
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. 20152015$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 XL lineup
Overview
About this bike
2015 GT Speed Series Pro XL value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork:
- GT Full Carbon Fork with Carbon Taper Steerer Tube. Integrated Top Cap, 15/10mm Axle Dropouts
- Fork
- GT Full Carbon w/tapered steerer
- Fork Brand & Model
- GT Full Carbon w/tapered steerer
- Frame
- GT Speed Metal hydroformed butted-aluminum
- Frame Construction
- GT Speed Metal hydroformed butted-aluminum
Drivetrain
- Groupset
- 2015 GT Speed Series Pro XL
- Chain:
- KMC Z610HX
- Crank:
- New GT Hollow Forged AL 2-Piece, 175mm Arms, GT 44T GT CNC AL Chain Wheel
- Bottom Bracket:
- BB30 Sealed Bearings
- Bottom Bracket
- BB30
- Chainrings
- 44T
- Crankset
- GT hollow-forged 2-piece aluminum, 175mm
- Freewheel
- 16T
Brakes
- Brake Levers:
- Promax V-Point Click Lever AL 2 Finger Lever W/ Reach Adjust
- Brake Levers
- Promax
- Brakes
- Rear: Promax linear-pull
Cockpit
- Handlebar:
- GT Interceptor Chromoly, H:8.25" x W:28.5", Taper Cross Bar, 11 Back x 3 Up
- Stem:
- GT CNC Race 1-1/8", 50mm Ext
- Grips:
- GT DOHC Design 140mm
- Headset:
- FSA 1-1/8"-1.5" Taper Integrated Design, 45X45 Degree Sealed Bearings
- Saddle:
- SDG Patriot, I-Beam Kevlar w/ Embossed GT Wing Graphic
- Seat Post:
- SDG I-Beam Micro adj, AL 6061, 27.2mm
- Seat Clamp:
- GT Quick Release Integrated Internal Wedge
- Grips
- GT DOHC
- Handlebar
- GT Interceptor, chromoly
- Saddle
- SDG Patriot, I-Beam
- Seatpost
- SDG I-Beam
- Stem
- GT CNC Race
Wheels & Tires
- Rims:
- Alienation Deviant 36H Front, Alienation 440 36H Rear
- Tires:
- Tioga Power Block 20" x 1.95" Front, 1.75" Rear
- Hubs:
- GT Superlace Design, Sealed Bearings, 3/8" Axle, 36 Hole, w/ Allen Thread in Bolts, AL Washers
- Nipples:
- 15G AL ANO
- Hubs
- GT Superlace, aluminum
- Spokes
- 15-gauge stainless-steel
- Tires
- Tioga Power Block, Front: 20 x 1.95; Rear: 20 x 1.75
- Wheel Set
- Front: Alienation Deviant; Rear: Alienation 440
Pedals
- Pedals:
- GT Slim Profile Large Size Platform, PP Material
- Pedals
- GT platform
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.