Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
1999 GT Speed Series 24"
Value Guide market data · 1999 GT Speed Series 24"
12-month trend
— %
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 1999 GT Speed Series 24"
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Speed model years
2021$986 - $1,145▼ 7% vs. 1999
2020$814 - $945▼ 23% vs. 1999
2019$781 - $907▼ 26% vs. 1999
2018$865 - $1,004▼ 18% vs. 1999
2016$1,116 - $1,296▲ 5% vs. 1999
2015$1,414 - $1,642▲ 33% vs. 1999
2014$1,414 - $1,642▲ 33% vs. 1999
2013$1,135 - $1,318▲ 7% vs. 1999
2012$1,074 - $1,247▲ 1% vs. 19992000$747 - $867▼ 30% vs. 19991999$1,060 - $1,231Currently viewing.jpg)
1998$1,171 - $1,360▲ 10% vs. 1999
1997$1,228 - $1,426▲ 16% vs. 19991996$763 - $886▼ 28% vs. 19991999 Speed Series 24" lineup
Overview
About this bike
1999 GT Speed Series 24" value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork Brand & Model
- GT
- Fork Material
- Chromoly, unicrown crown
- Frame Construction
- Welded
- Frame Tubing Material
- 6061 T6 aluminum
- Rear Shock
- Not applicable
Drivetrain
- Groupset
- 1999 GT Speed Series 24"
- Bottom Bracket
- GT sealed bearing
- Cassette
- 1-speed, 17 teeth
- Chain
- 1/2 x 1/8inch
- Component Group
- Not applicable
- Crankset
- GT 3-piece aluminum, 39 teeth
- Shifters
- Not applicable
Brakes
- Brakes
- Dia-Compe MX1, direct pull rear brakes, Dia-Compe MX-1 rear levers
Cockpit
- Handlebar
- GT Pro Cruiser chromoly
- Stem
- GT Piston Invet
- Headset
- 1 1/8inch threadless Aheadset SX-1
- Saddle
- GT Drop Nose
- Seatpost
- GT aluminum micro-adjust
Wheels & Tires
- Hubs
- GT Rhythm System sealed
- Rims
- GT Rhythm System aluminum
- Spoke Brand
- Stainless steel, 2.0mm straight gauge
- Spoke Nipples
- Brass nipples
- Tires
- Front: 24 x 2.125inch GT AA Pro, Rear: 24 x 1.75inch GT AA Pro
Pedals
- Pedals
- GT aluminum platform
Accessories
- Colors
- Ball-burnished
- Extensions
- Not applicable
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.