Rocky Mountain Growler 40

2019 MountainTrail

Last known price: $1,359

Prices shown first for United States
Fork travel: 130 mm
Wheels: 26″, 27.5″
Drivetrain: 1 × 10 30t / 11–46t
Gear range: 418%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 156–166
SM 163–174
MD 171–182
LG 179–189
XL 185–195

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 Alloy. Threaded BB. Tapered Zerostack Headtube Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

6 parts

Brakes

1 part

Brakes
- Shimano BR-MT400
BR-MT400

Wheels and tires

5 parts

Front hub
- Shimano HB-MT400
HB-MT400MT-400
Rear hub
- Shimano FH-M3050
FH-M3050
Rims
- Alex Rims
Spokes

2.0 Stainless Not identified
Tires
- WTB

Cockpit and contact points

7 parts

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 419mm

Stack 623mm

Wheelbase 1151mm

Head angle 67.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	371	390	419	438	463
Stackmm	604	618	623	628	638
Top tube lengthmm	550	585	610	630	655
Seat tube lengthmm	356	430	457	483	521
Head tube lengthmm	100	100	105	110	120
Head tube angle	67°	67°	67°	67°	67°
Seat tube angle	73.5°	73°	73°	73°	73°
Chainstay lengthmm	435	440	440	440	440
Wheelbasemm	1098	1125	1151	1171	1198
Front centermm	666	691	717	737	764
Bottom bracket dropmm	40	58	58	58	58
Bottom bracket heightmm	303	297	297	297	297
Standover heightmm	795.5	819	827	838	854
Fork rakemm	50	56	52	51	48
Trailmm	91	90	94	95	99
Stack/reach ratio	1.63	1.59	1.49	1.43	1.38

Not published by the manufacturer: 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: 130 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 46
Lowest gear: 17.9 in
Highest gear: 75.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.8″
Wheel material: Aluminum
Wheel size: 26″, 27.5″

Technical analysis

4 measures

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

Front travel

130 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2019
Sample: 982 bicycles with this information
Coverage: 96.6% of the class

Lowest gear

17.9 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2019
Sample: 964 bicycles with this information
Coverage: 94.8% of the class

Highest gear

75.0 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2019
Sample: 964 bicycles with this information
Coverage: 94.8% of the class

Shifting

Mechanical

34 of 1,016 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2019
Sample: 1,016 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.9 km/h
Highest gear: 28.7 km/h

Total gear range 418%

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: 17.9–75.0 gear inches
Class reference (p10–p90): 16.5–92.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2019
Lowest gear: 964 bicycles with this information, 94.8% of the class
Highest gear: 964 bicycles with this information, 94.8% 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
Specification	This bicycle Rocky Mountain Growler 40	Rocky Mountain Growler 20	Rocky Mountain Growler 50	Rocky Mountain Growler Jr 26
Suspension
Front travel	130 mm	120 mm	140 mm	120 mm
Drivetrain
Smallest chainring	30	28	30	28
Largest chainring	30	28	30	28
Rear sprockets	10	9	11	Not informed
Largest sprocket	46	40	46	40
Lowest gear	17.9 in	19.3 in	17.9 in	18.2 in
Highest gear	75.0 in	70.0 in	75.0 in	66.2 in
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Dropper seatpost	Rigid seatpost
Other specifications
Fork spring	Air	Coil	Air	Coil
Wheel size	26″ / 27.5″	26″ / 27.5″	26″ / 27.5″	26″

Changes since 2018
Specification	2018 Rocky Mountain Growler 40	This bicycle Rocky Mountain Growler 40
Suspension
Front travel	120 mm	130 mm
Drivetrain
Smallest chainring	28	30
Largest chainring	28	30
Rear sprockets	11	10
Largest sprocket	42	46
Lowest gear	18.3 in	17.9 in
Highest gear	70.0 in	75.0 in
Cockpit
Seatpost	Rigid seatpost	Dropper seatpost
Other specifications
Bottom bracket standard	BB86/BB92	BSA
Wheel size	27.5″	26″ / 27.5″