Rocky Mountain Vertex Jr 24

2019 YouthMountain youth

Fork travel: 65 mm
Wheels: 24″
Drivetrain: 1 × 9 30t / 11–40t
Gear range: 364%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

18 of 21 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

Rocky Mountain 6061 SL Alloy. Threaded BB. Zero Stack Headtube. 24" Kid's Geometry Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

6 parts

Brakes

1 part

Brakes
- Shimano BL-MT201
BL-MT201

Wheels and tires

5 parts

Front hub
- Shimano HB-TX505
HB-TX505
Rear hub
- Shimano FH-TX505 11 speeds
FH-TX505
Rims
- WTB
Spokes

2.0 Stainless Not identified
Tires
- Vee Tire

Cockpit and contact points

7 parts

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 355mm

Stack 492mm

Wheelbase 955mm

Head angle 68.0°

Seat angle 72.0°

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
Reachmm	355
Stackmm	492
Top tube lengthmm	515
Seat tube lengthmm	310
Head tube lengthmm	100
Head tube angle	68°
Seat tube angle	72°
Chainstay lengthmm	382
Wheelbasemm	955
Front centermm	576
Bottom bracket dropmm	40
Standover heightmm	643
Fork rakemm	35
Stack/reach ratio	1.39

Not published by the manufacturer: Bottom bracket height, Trail, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 65 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 40
Lowest gear: 18.0 in
Highest gear: 65.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
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

18.0 gear inches

This value is within the central range for this class.

Cohort: Youth / Mountain youth Model year: 2019
Sample: 91 bicycles with this information
Coverage: 81.2% of the class

Highest gear

65.5 gear inches

This value is within the central range for this class.

Cohort: Youth / Mountain youth Model year: 2019
Sample: 91 bicycles with this information
Coverage: 81.2% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.9 km/h
Highest gear: 25.1 km/h

Total gear range 364%

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: 18.0–65.5 gear inches
Class reference (p10–p90): 17.1–75.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2019
Lowest gear: 91 bicycles with this information, 81.2% of the class
Highest gear: 91 bicycles with this information, 81.2% 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 2019 builds

Differences across 2019 builds
Specification	This bicycle Rocky Mountain Vertex Jr 24	Rocky Mountain Vertex Carbon 50	Rocky Mountain Vertex Carbon 70	Rocky Mountain Vertex Carbon 90	Rocky Mountain Vertex Jr 20
Frame
Frame material	Aluminum	Carbon	Carbon	Carbon	Aluminum
Suspension
Front travel	65 mm	100 mm	100 mm	100 mm	65 mm
Drivetrain
Smallest chainring	30	32	32	32	28
Largest chainring	30	32	32	32	28
Rear sprockets	9	12	12	12	9
Smallest sprocket	11	11	10	10	11
Largest sprocket	40	50	50	50	36
Lowest gear	18.0 in	17.6 in	17.6 in	17.6 in	15.6 in
Highest gear	65.5 in	80.0 in	88.0 in	88.0 in	50.9 in
Wheels
Wheel configuration	Same size	Wheel options	Wheel options	Wheel options	Same size
Other specifications
Bottom bracket standard	BSA	BB86/BB92	BB86/BB92	BB86/BB92	BSA
Fork spring	Air	Air	Air	Not informed	Air
Tire width	2.25″	2.2″	2.2″	2.2″	2.25″
Wheel size	24″	29″ / 27.5″	29″ / 27.5″	29″ / 27.5″	20″