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2021 Rocky Mountain

Growler 20

A 29″ aluminum frame hardtail trail bike with upper mid-range components.
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Manufacturer Price

$1,039
FrameAluminum
SuspensionHardtail, 130mm
ForkSuntour XCM
Wheels29″ Aluminum
Drivetrain1 × 10
GroupsetDeore
BrakesShimano Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Growler 20
Other Trail 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)

35 km/h

Growler 20

42 km/h

Similar Bikes

Highest gear

(descending)

Sizing
SM

158cm – 171cm

MD

168cm – 180cm

LG

178cm – 189cm

XL

186cm – 199cm

🐐 Estimated

Rider Fit Notes

None yet.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Reviews
99 Spokes
2020 Rocky Mountain Growler Jr 24

Jun 2020

The Growler Jr 24 is a scaled down version of the popular hardtail from Rocky Mountain Bikes. Like its big brother, it’s a progressive hardtail shredding machine.

Highs
  • Progressive geometry and plenty of kid friendly features

Lows
  • A bit on the heavy side

Read Review

Mountain Bike Action
Mountain Bike Action Bike Test: Rocky Mountain Growler 50 Trail Bike

Oct 2020 · McCoy

Enduro geometry on a hardtail?

Read Review

Outdoor Gear Lab
Rocky Mountain Growler 50

Mar 2020 · Pat Donahue

The redesigned Rocky Mountain Growler 50 is a hard-charging hardtail with the attitude of an enduro bike. This aggressive bicycle lives for high speeds and...

Highs
  • Aggressive geometry

  • Built to last

  • Killer tires

Lows
  • May be overkill for riders/trails

  • Sluggish in tight spaces

Read Review

NSMB
2020 Rocky Mountain Growler 20

Dec 2019

Rocky brings modern hardtail geometry at an entry-level price with the 1000 USD Growler 20...

Highs
  • Progressive geometry with 64° head angle

  • Same frame as higher-end models, upgrade-friendly

  • Boost 148 thru-axle rear, tapered headtube, BSA bottom bracket

  • 29x2.6" WTB Trail Boss tires with clearance for more

  • Shimano MT201 brakes with good lever feel and modulation

  • Wide 780mm handlebar, WTB Volt saddle

  • Great climbability and descending capability for price

  • No major compatibility issues, tubeless ready

Lows
  • Hard plastic grips are awful; needed replacement

  • No clutch derailleur leads to drivetrain noise and occasional chain drop

  • Resin-only rotors and Centerlock hubs limit upgrade ease

  • Suntour fork is overdamped and has blow-off tendency on big hits

  • Square-taper crankset flex under load; drivetrain doesn't shift under load well

  • No dropper post included; seatpost may be short on smaller sizes

  • Brakes lack power compared to higher-end systems

Read Review

BIKE Magazine
Tested: Rocky Mountain Growler 50 | $1,900

Nov 2019

Modern geometry meets affordable hardtail in the Rocky Mountain Growler 50.

Read Review

Geometry
Specs
Build
Frame

Rocky Mountain 6061 Alloy. Threaded BB. Boost 148mm. Tapered Zerostack Headtube. Dropper Post Compatible.

BB StandardBSA, 73mm, Threaded

Fork

Suntour XCM34 DS 130mm

Travel130mm

Spring TypeCoil

Bottom Bracket

Sealed Cartridge Bearing

Headset

FSA Orbit NO.57B | 36°x45° Bearings | 30.2mm x 41mm x 7.1mm Upper | 40mm x 51.8mm x 7.5mm Lower

Stem

Rocky Mountain XC | 7° Rise | All Sizes = 40mm

Handlebar

Rocky Mountain AM | 780mm Width | 25mm Rise | 9° Backsweep | 5° Upsweep | 31.8mm Clamp

Saddle

WTB Volt | Steel Rails | 142mm Width

Seatpost

Rocky Mountain 30.9mm

TypeRigid

Pedals

Alloy Platform

Grips

Rocky Mountain Lock On Light

Groupset
Rear Derailleur

Shimano Deore 10spd

Crank

Rocky Mountain Microdrive 28T

Shifters

Shimano Deore 10spd

Cassette

Sunrace CSMS2 11-46T

Chain

KMC X10-1

Brakes

Shimano MT200 2 Piston | Organic Pads | Shimano RT10 180mm F Rotor | Shimano RT10 180mm R Rotor

TypeShimano Hydraulic Disc

Wheels
Rims

Rocky Mountain TR30 Tubeless | Tubeless Compatible - Tape | Valves | Sealant Not Incl

Spokes

2.0 Stainless

Front Hub

Shimano MT400 | 15mm Boost

Rear Hub

Shimano MT400 Boost 148mm | RMB Axle | 163mm x 12mm x 1.5m

Tires

F: Kenda Amrak 29 x 2.6 // R: Kenda Amrak 29 x 2.6

Rider Notes
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First added 11 August

Last updated 12 January

Not listed for 1,977 days