Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
2015 GT Eightball
Value Guide market data · 2015 GT Eightball
12-month trend
— %
Direction and magnitude, not judgment
vs. category average
11%
Drops faster than category avg
Price over time - 2015 GT Eightball
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Eightball model years
2015 Eightball lineup
Overview
About this bike
2015 GT Eightball value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork:
- GT Tough Guy 6061 alloy steerer, alloy legs 700c disc specific
- Fork
- GT Tough Guy
- Fork Brand & Model
- GT Tough Guy
- Frame
- GT Triple Triangle aluminum
- Frame Construction
- GT Triple Triangle aluminum
Drivetrain
- Groupset
- 2015 GT Eightball
- Chain:
- KMC Z510
- Crank:
- GT Baller crank 46t alloy ring
- Shifters:
- Shimano Alfine 8
- Bottom Bracket
- Eccentric
- Cassette
- 18T
- Chainrings
- 46T
- Crankset
- GT Baller
- Shifters
- Shimano Alfine
Brakes
- Brake Levers:
- Shimano Hydrualic
- Brake Levers
- Shimano
- Brakes
- Shimano, hydraulic-disc
Cockpit
- Handlebar:
- GT Cut Off Riser, 6061 alloy 30mm x 560mm
- Stem:
- GT BMX 3D forged
- Grips:
- GT Wings
- Headset:
- Tange Seiki sealed Cartridge
- Saddle:
- GT
- Seat Post:
- GT Alloy micro adjust
- Seat Clamp:
- GT
- Grips
- GT Wings
- Handlebar
- GT Cut Off Riser
- Saddle
- GT
- Seatpost
- GT aluminum
- Stem
- GT BMX
Wheels & Tires
- Rims:
- GT Baller 30mm tall aero
- Tires:
- Schwalbe Kojak 700x35c slicks
- Hubs:
- Formula Disc QR
- Spokes:
- Stainless paint to match
- Nipples:
- brass
- Hubs
- Front: Formula; Rear: Shimano Alfine 8
- Spokes
- 14-gauge, stainless-steel
- Tires
- Schwalbe Kojak, 700 x 35c
- Wheel Set
- GT Baller aero
Pedals
- Pedals:
- GT Nylon platforms
- Pedals
- GT platform
Accessories
- Farben:
- Matte Raw
- Cog Set:
- Shimano Alfine 18t
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.