Diamondback Line 24

2021 YouthMountain youth Manufacturer page

Last known price: $725

Prices shown first for United States
Fork travel: 80 mm
Wheels: 24″
Drivetrain: 1 × 8 32t / 11–32t
Gear range: 291%
Frame: Aluminum
Brakes: Mechanical disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

12 of 23 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

6061 T-6 Aluminum Jr-24" Frame, Formed Tubing, Disc Specific w/ Replacable Hanger Not identified

T-6

Suspension

1 part

Fork
- SR Suntour

Drivetrain

7 parts

Bottom bracket

Sealed Cartridge Not identified
Cassette
- SRAM PG-820 8 speeds 11–32t
PG-820
Chain
- KMC
Crankset

Aluminum Arm, w/ 32T Steel Single Ring, 155mm Not identified
Front derailleur

Upper Chain Guide, 34.9 Clamp Diameter Not identified
Rear derailleur
- SRAM X4 7 speeds
Shifters
- SRAM X4

Brakes

2 parts

Brake levers
- Tektro
Brakes
- Tektro

Wheels and tires

5 parts

Front hub

32h Aluminum w/ CNC Disc Mount Not identified
Rear hub

32h Aluminum w/ CNC Disc Mount, Cassette Not identified
Rims
- Diamondback
Spokes

14g Stainless Steel Not identified
Tires
- Vee Tire

Cockpit and contact points

7 parts

Grips

DB "Flanged" 135mm Silcone Not identified
Handlebar
- Diamondback
Headset
- FSA NO.11
IS-3
Pedals

DB4L Resin Platform Not identified
Saddle

DB Sync'r Jr. Saddle Not identified
Seatpost

Aluminum Micro Adjust, 27.2mm Not identified
Stem
- Diamondback

Sizes and geometry

1 size Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 24"

Table

Reach 328mm

Stack 497mm

Wheelbase 962mm

Head angle 69.0°

Seat angle 71.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 24″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	328
Stackmm	497
Top tube lengthmm	500
Seat tube lengthmm	317
Head tube lengthmm	105
Head tube angle	69°
Seat tube angle	71°
Chainstay lengthmm	410
Wheelbasemm	962
Front centermm	553
Bottom bracket dropmm	23
Bottom bracket heightmm	295
Standover heightmm	635
Fork rakemm	40
Stack/reach ratio	1.52
Suspension and parts
Crank lengthmm	155
Handlebar widthmm	720
Stem lengthmm	45
Seatpost lengthmm	300

Not published by the manufacturer: Trail, Front travel, Rear travel, Stem angle and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 80 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 24.0 in
Highest gear: 69.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 24″

Technical analysis

2 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

24.0 gear inches

This value is above the central range for this class.

Cohort: Youth / Mountain youth Model year: 2021
Sample: 230 bicycles with this information
Coverage: 72.3% of the class

Highest gear

69.8 gear inches

This value is within the central range for this class.

Cohort: Youth / Mountain youth Model year: 2021
Sample: 230 bicycles with this information
Coverage: 72.3% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.2 km/h
Highest gear: 26.7 km/h

Total gear range 291%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 24.0–69.8 gear inches
Class reference (p10–p90): 15.6–80.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2021
Lowest gear: 230 bicycles with this information, 72.3% of the class
Highest gear: 230 bicycles with this information, 72.3% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2021 builds
Specification	This bicycle Diamondback Line 24	Diamondback Line
Frame
Fork material	Aluminum	Magnesium
Bicycle weight	Not informed	14.29 kg
Suspension
Front travel	80 mm	120 mm
Drivetrain
Smallest chainring	32	30
Largest chainring	32	30
Rear sprockets	8	9
Largest sprocket	32	36
Lowest gear	24.0 in	22.9 in
Highest gear	69.8 in	75.0 in
Brakes
Brake type	Mechanical disc	Hydraulic disc
Other specifications
Tire width	2.25″	2.35″
Wheel size	24″	27.5″