Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
2021 Diamondback Line 24
Value Guide market data · 2021 Diamondback Line 24
12-month trend
11%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2021 Diamondback Line 24
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Line model years
2021 Line 24 lineup
Overview
About this bike
2021 Diamondback Line 24 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Frame
- Aluminum / 6061 T-6 Aluminum Jr-24" Frame, Formed Tubing, Disc Specific w/ Replacable Hanger
- Suspension
- Hardtail, 80mm
- Fork
- Suntour XCT / SR Suntour XCT JR 24", 80mm Travel, 28mm Stanchion, Aluminum Lowers, w/ Preload AdjustTravel:80mmSpring Type:Coil
- Headset
- FSA IS-3/NO.11 Integrated Style
Drivetrain
- Drivetrain
- 1 × 8
- Groupset
- X4
- Crank Length
- 155
- Bottom Bracket
- Sealed Cartridge
- Rear Derailleur
- SRAM X4, 8 Speed
- Front Derailleur
- Upper Chain Guide, 34.9 Clamp Diameter
- Crank
- Aluminum Arm, w/ 32T Steel Single Ring, 155mm
- Shifters
- SRAM X4 8 Speed
- Cassette
- SRAM PG820 Cassette, 8 Speed, 11-32T
- Chain
- KMC Z82, 8 Speed
Brakes
- Brakes
- Tektro Mechanical Disc / Tektro Aries Mechanical Disc, w/ 160mm RotorsType:Tektro Mechanical Disc
- Brake Levers
- Tektro 2 Finger Aluminum Linear w/ Reach Adjust
Cockpit
- Stem Length
- 45
- Handlebar Width
- 720
- Stem
- Diamondback "Shortie", 45mm Reach, 31.8 Bar Bore
- Handlebar
- Diamondback, 720mm Wide, 15mm Rise, 31.8 Bar Bore
- Saddle
- DB Sync'r Jr. Saddle
- Seatpost
- Aluminum Micro Adjust, 27.2mmType:Rigid
- Grips
- DB "Flanged" 135mm Silcone
Wheels & Tires
- Wheels
- 24″ Aluminum / 24″
- Top Tube Length
- 500
- Seat Tube Length
- 317
- Seat Tube Angle
- 71.0
- Head Tube Length
- 105
- Head Tube Angle
- 69.0
- Rims
- 32h Diamondback Doublewall
- Spokes
- 14g Stainless Steel
- Front Hub
- 32h Aluminum w/ CNC Disc Mount
- Rear Hub
- 32h Aluminum w/ CNC Disc Mount, Cassette
- Tires
- Vee Tire Crown Gem, 24x2.25"
Pedals
- Pedals
- DB4L Resin Platform
Accessories
- Stack
- 497
- Reach
- 328
- Stack/Reach Ratio
- 1.52
- BB Drop
- 23
- BB Height
- 295
- Front Center
- 553
- Chainstay Length
- 410
- Wheelbase
- 962
- Rake
- 40
- Standover Height
- 635
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.