Rocky Mountain Vertex 20

2017 YouthMountain youth

Last known price: $689

Prices shown first for United States
Fork travel: 50 mm
Wheels: 20″
Drivetrain: 1 × 1 36t / 24t
Gear range: 100%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

15 of 19 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 Series Custom Alloy. Threaded BB. Traditional 1-1/8" Headtube. Rack and Fender Mounts. 20" Kids Geometry. Internal Gear Specific. Not identified

Suspension

1 part

Fork

Spinner Grind Air. 50mm Not identified

Drivetrain

4 parts

Bottom bracket
- VP
Cassette

24T Sprocket Not identified
Chain
- KMC
Crankset
- Rocky Mountain 36t

Brakes

2 parts

Wheels and tires

5 parts

Front hub
- SRAM
Rear hub
- SRAM
Rims
- WTB
Spokes

Steel UCP Not identified
Tires
- Kenda

Cockpit and contact points

6 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 13"

Table

Reach 355mm

Stack 497mm

Wheelbase 968mm

Head angle 70.5°

Seat angle 74.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 20″ 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	497
Top tube lengthmm	500
Seat tube lengthmm	330
Head tube lengthmm	90
Head tube angle	70.5°
Seat tube angle	74°
Chainstay lengthmm	405
Wheelbasemm	968
Front centermm	564
Bottom bracket dropmm	25
Standover heightmm	615
Fork rakemm	39
Stack/reach ratio	1.40

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: 50 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 36
Largest chainring: 36
Rear sprockets: 1
Smallest sprocket: 24
Largest sprocket: 24
Lowest gear: 30.0 in
Highest gear: 30.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: No shifting

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 1.95″
Wheel material: Aluminum
Wheel size: 20″

Technical analysis

3 measures

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

Front travel

50 mm

This value is within the central range for this class.

Cohort: Youth / Mountain youth Model year: 2017
Sample: 41 bicycles with this information
Coverage: 74.5% of the class

Lowest gear

30.0 gear inches

This value is above the central range for this class.

Cohort: Youth / Mountain youth Model year: 2017
Sample: 44 bicycles with this information
Coverage: 80.0% of the class

Highest gear

30.0 gear inches

This value is below the central range for this class.

Cohort: Youth / Mountain youth Model year: 2017
Sample: 44 bicycles with this information
Coverage: 80.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.5 km/h
Highest gear: 11.5 km/h

Total gear range 100%

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: 30.0–30.0 gear inches
Class reference (p10–p90): 16.5–87.3 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2017
Lowest gear: 44 bicycles with this information, 80.0% of the class
Highest gear: 44 bicycles with this information, 80.0% 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 2017 builds
Specification	This bicycle Rocky Mountain Vertex 20	Rocky Mountain Vertex 24	Rocky Mountain Vertex 930	Rocky Mountain Vertex 950	Rocky Mountain Vertex 950 RSL	Rocky Mountain Vertex 970 RSL
Frame
Frame material	Aluminum	Aluminum	Aluminum	Aluminum	Carbon	Carbon
Suspension
Front travel	50 mm	65 mm	100 mm	100 mm	100 mm	100 mm
Drivetrain
Front chainrings	1	1	2	2	2	2
Smallest chainring	36	28	28	28	28	28
Largest chainring	36	28	38	38	38	38
Rear sprockets	1	Not informed	11	Not informed	Not informed	Not informed
Smallest sprocket	24	12	11	11	11	11
Largest sprocket	24	36	40	40	40	40
Lowest gear	30.0 in	22.6 in	20.3 in	20.3 in	20.3 in	20.3 in
Highest gear	30.0 in	67.7 in	100.2 in	100.2 in	100.2 in	100.2 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Cockpit
Shifting	No shifting	Mechanical	Mechanical	Mechanical	Mechanical	Mechanical
Other specifications
Bottom bracket standard	BSA	BSA	BB86/BB92	BB86/BB92	BB86/BB92	BB86/BB92
Fork spring	Air	Air	Not informed	Not informed	Not informed	Air
Tire width	1.95″	2″	2.2″	2.2″	2.2″	2.2″
Wheel size	20″	29″	29″	29″	29″	29″