Diamondback Cobra 24

Name: Diamondback Cobra 24
Brand: Diamondback

2018 YouthGeneral youth Manufacturer page

Last known price: $249

Prices shown first for United States
Fork travel: 40 mm
Wheels: 24″
Drivetrain: 3 × 7 24–42t / 14–28t
Gear range: 350%
Frame: Steel
Brakes: Rim brake

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

7 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

DB Hi-Ten Jr Boy's 24" Mountain Frame Not identified

Suspension

1 part

Fork
- Zoom

Drivetrain

7 parts

Bottom bracket

Square Taper - 5pc Not identified
Cassette
- Shimano MF-TZ21 14–28t
MF-TZ21
Chain
- KMC
Crankset

165mm Steel, 42/34/24T w/ Chain Guard Not identified
Front derailleur
- Shimano FD-TZ20
FD-TZ20TZ-20
Rear derailleur
- Shimano Tourney RD-TY300 7 speeds
RD-TY300
Shifters
- Shimano Altus SL-M310
SL-M310

Brakes

2 parts

Brake levers

Alloy Linear Pull w/ Reach Adjust Not identified
Brakes

Alloy Linear Pull Not identified

Wheels and tires

5 parts

Front hub

36h Steel Nutted Not identified
Rear hub

36h Steel Nutted, Freewheel Not identified
Rims

36h Alloy Not identified
Spokes

14g Steel Not identified
Tires

Jr ATB Knobby, 20x2.0" Not identified

Cockpit and contact points

7 parts

Grips

DB Kraton Not identified
Handlebar

Steel Jr Riser Not identified
Headset

Threaded 1" Not identified
Pedals

Resin MTB, 9/16" Not identified
Saddle

JR ATB 2-panel Not identified
Seatpost
- Pillar
Stem

Steel Quill Not identified

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

Geometry diagram unavailable

The drawing needs reach and stack, which the manufacturer did not publish. Available facts remain in the table.

Size

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Frame
Top tube lengthmm	483
Seat tube lengthmm	330
Head tube lengthmm	101.6
Head tube angle	71°
Seat tube angle	71°
Chainstay lengthmm	419.1
Wheelbasemm	965
Front centermm	547
Bottom bracket dropmm	20
Standover heightmm	546
Fork rakemm	40
Suspension and parts
Crank lengthmm	165
Handlebar widthmm	580
Stem lengthmm	80
Seatpost lengthmm	300

Not published by the manufacturer: Reach, Stack, Bottom bracket height, Trail, Stack/reach ratio, Front travel, Rear travel, Stem angle and Dropper post travel.

Specifications

Frame and fork

Intended fit: boys
Frame material: Steel

Suspension

Suspension configuration: Hardtail
Front travel: 40 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 24
Largest chainring: 42
Rear sprockets: 7
Smallest sprocket: 14
Largest sprocket: 28
Lowest gear: 20.6 in
Highest gear: 72.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2″
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

20.6 gear inches

This value is below the central range for this class.

Cohort: Youth / General youth Model year: 2018
Sample: 137 bicycles with this information
Coverage: 71.3% of the class

Highest gear

72.0 gear inches

This value is above the central range for this class.

Cohort: Youth / General youth Model year: 2018
Sample: 137 bicycles with this information
Coverage: 71.3% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.9 km/h
Highest gear: 27.6 km/h

Total gear range 350%

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: 20.6–72.0 gear inches
Class reference (p10–p90): 17.9–78.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / General youth Model year: 2018
Lowest gear: 137 bicycles with this information, 71.3% of the class
Highest gear: 137 bicycles with this information, 71.3% 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 2018 builds
Specification	This bicycle Diamondback Cobra 24	Diamondback Cobra 20
Drivetrain
Front chainrings	3	1
Smallest chainring	24	40
Largest chainring	42	40
Lowest gear	20.6 in	28.6 in
Highest gear	72.0 in	57.1 in
Other specifications
Wheel size	24″	20″