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2015 Rocky Mountain

Vertex 20

A 20″ aluminum frame mountain youth bike with shimano hydraulic disc brakes.
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FrameAluminum
SuspensionHardtail, 50mm
ForkSPINNER GRIND
Wheels20″ Aluminum
DrivetrainSingle-speed
BrakesShimano Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Handling
nimblestable
Vertex 20
Other Mountain Youth bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

11 mph

Vertex 20

Highest gear

(descending)

Reviews

Summary

The Rocky Mountain Vertex is a highly regarded cross-country bike, praised for its lightweight carbon fiber frame, impressive stiffness, and versatile performance suitable for both racing and trail riding. Its geometry and suspension setup contribute to a ride that's lively, snappy, and comfortable over rough terrain. While it excels in efficiency and handling, some components like the stock tires and saddle may not meet everyone's preferences.

Pros
  • Lightweight carbon fiber frame

  • Impressive stiffness and reasonable comfort

  • Versatile performance for cross-country racing and trail riding

  • Efficient under power with negligible flex

  • Comfortable and aggressive fit for long rides

Cons
  • Stock tires may not suit all riders

  • Firm saddle may not be comfortable for everyone

  • Some components like brakes can get noisy in certain conditions

Key Quotes
The Vertex 990 RSL is one of the nimblest 29ers we’ve ridden.
BikeRadar logoBikeRadar
this Canadian brand makes a mighty fine cross country race weapon too
Flow Mountain Bike logoFlow Mountain Bike
The weight is freakishly low for a bike that can be ridden off-road in any meaningful fashion
MTBR logoMTBR

Feedback?

View all reviews

Mountain Flyer
Tested: Rocky Mountain Vertex 20

Oct 2016

Ah to be a kid.… When I ventured out on a bike ride with my 8-year-old boy this summer, we made a few stops along the way. All suited up in his bright green swim trunks with matching shirt and sun hat (jammed under his helmet), he hopped aboard the Rocky Mountain Vertex 20.

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Flow Mountain Bike
Rocky Mountain Vertex 990 RSL

Jan 2013

[SV_VIMEO id=”57988036″] Rocky Mountain are best known in Australia for their gravity-oriented bikes – it’s pretty hard to shake the awesome legacy of their pioneering role in the freeride world – but Flow thinks this Canadian brand makes a mighty fine cross country race weapon too. We tested the Rocky Mountain Vertex 990 RSL carbon …

Highs
  • Great XC race bike in every regard. Light, but not at all skittish. Very reliable component spec.

Lows
  • Stock tyres are very fragile.

Read Review

BikeRadar
Rocky Mountain Vertex 990 RSL review

Jul 2012 · James Huang

A rare combination of agility and 29er speed, with only the tires to swap

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MTBR
2012 Rocky Mountain Vertex Carbon 29er Hardtail Preview

Jul 2011 · Lee Lau

- Mtbr.com

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Geometry
Specs
Build
Frame

Rocky Mountain 6061 Series Custom Alloy. Threaded BB. ZeroStack 1-1/8\" Headtube. Fender Mounts. 20\" Kids Geometry. Internal Gear Specific.

BB StandardBSA, Threaded

Fork

Spinner Grind Air. 50mm. Air Spring / Hydraulic Lockout / Rebound

Travel50mm

Spring TypeAir

Bottom Bracket

VP Cartridge

Headset

FSA #10 Internal: ZS44mm

Stem

Rocky Mountain XC7 15° x 60mm

Handlebar

Rocky Mountain XC Ø31.8mm x 580mm x 5° Sweep

Saddle

Rocky Mountain Jr.

Seatpost

Rocky Mountain 27.2mm x 300mm

TypeRigid

Grips

Rocky Mountain Jr

Groupset
Rear Derailleur

N/A

Front Derailleur

N/A

Crank

Rocky Mountain 140mm 36T

Shifters

N/A

Cassette

20T Sprocket

Chain

KMC Z-1

Brakes

Shimano BR-M355 Hydraulic Disc 160mm

TypeShimano Hydraulic Disc

Brake Levers

Shimano BL-M355

Wheels
Rims

Wheeltech SX17 By WTB

Spokes

Upc

Front Hub

SRAM MTH 306 6 Bolt / 9 x 100mm QR

Rear Hub

SRAM Automatix 2-Speed Disc

Tires

Kenda MTB 20 x 1.95\"

Rider Notes
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First added September 9

Last updated April 14

Not listed for 1,874 days