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Today’s DealsGrowler Jr 20
A 20″ aluminum frame mountain youth bike with modest components and shimano hydraulic disc brakes.
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Manufacturer Price
$729| Frame | Aluminum |
|---|---|
| Suspension | Hardtail, 60mm |
| Fork | Suntour XCT |
| Wheels | 20″ Aluminum |
| Drivetrain | 1 × 8 |
| Groupset | Altus |
| Brakes | Shimano Hydraulic Disc |
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.
Progressive geometry and plenty of kid friendly features
A bit on the heavy side

Oct 2020 · McCoy
Enduro geometry on a hardtail?

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...
Aggressive geometry
Built to last
Killer tires
May be overkill for riders/trails
Sluggish in tight spaces

Dec 2019
Rocky brings modern hardtail geometry at an entry-level price with the 1000 USD Growler 20...
Excellent frame geometry with 64° head angle
Shared frame across all Growler models (future-proof and upgrade-friendly)
Great 29x2.6" WTB Trail Boss tires
Good Shimano MT201 brakes with modulation
Affordable price at $1,000 USD
Boost 148 thru-axle rear end, tapered headtube, BSA bottom bracket
Awful hard plastic grips
Clutchless derailleur causes noise and chain drop
Basic Suntour fork with overdamped feel and blow-off issues
Short seatpost for sizing down with steep STA
Resin-only rotors and Centerlock hubs (less upgrade-friendly)
Square taper crankset flex
Altus drivetrain doesn't shift well under load

Nov 2019
Modern geometry meets affordable hardtail in the Rocky Mountain Growler 50.
| Frame | Rocky Mountain 6061 Alloy. Threaded BB. Zerostack Headtube. Dropper Post Compatible. BB Standard: BSA, Threaded |
|---|---|
| Fork | Suntour XCT JR 63mm Travel: 60mm Spring Type: Coil |
| Bottom Bracket | Sealed Cartridge Bearing |
| Headset | FSA No. 10P | 5/32" X 20 Retainer Bearings |
| Stem | Rocky Mountain XC | 7° Rise | All Sizes = 40mm |
| Handlebar | Rocky Mountain XC | 600mm Width | 25mm Rise | 9° Backsweep | 5° Upsweep | 31.8mm Clamp |
| Saddle | Rocky Mountain Pivotal Kids |
| Seatpost | Rocky Mountain Pivotal 30.9mm Type: Rigid |
| Pedals | Nylon Platform |
| Grips | Rocky Mountain Slide On Kids |
| Rear Derailleur | Shimano Altus |
|---|---|
| Crank | Rocky Mountain Microdrive 28T |
| Shifters | SunRace DLM403 Trigger |
| Cassette | SunRace CSM55 11-34T |
| Chain | KMC Z8.3 |
| Brakes | Shimano MT200 2 Piston | Organic Pads | Shimano RT10 160mm F Rotor | Shimano RT10 160mm R Rotor Type: Shimano Hydraulic Disc |
| Rims | Rocky Mountain JR30 Tubeless | Tubeless Compatible - Tape | Valves | Sealant Not Incl |
|---|---|
| Spokes | 2.0 Stainless |
| Front Hub | Shimano TX505 |
| Rear Hub | Shimano TX505 QR |
| Tires | F: Kenda Slant Six 20 x 2.6 // R: Kenda Amrak 20 x 2.4 |
First added August 11
Last updated January 12
Not listed for 1,977 days