Rocky Mountain Blizzard 20

2021 MountainFat bike

Last known price: $1,719

Prices shown first for United States
Suspension: Rigid
Wheels: 26″
Drivetrain: 1 × 12 30t / 10–51t
Gear range: 510%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–171
MD 168–180
LG 178–189
XL 186–199

Components

17 of 20 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 SL Series Alloy. 100mm BSA BB. Zero Stack Tapered Headtube. Internal Cable Routing. mm Dropper Post Compatible. 197mm Dropouts Not identified

Suspension

1 part

Fork
- Rocky Mountain

Drivetrain

6 parts

Bottom bracket
- Race Face
Cassette
- Shimano Deore CS-M6100-12 12 speeds 10–51t
CS-M6100-12
Chain
- Shimano Deore CN-M6100
CN-M6100
Crankset
- Race Face Ride 30t
Rear derailleur
- Shimano Deore RD-M6100 12 speeds
RD-M6100
Shifters
- Shimano Deore SL-M6100 12 speeds
SL-M6100

Brakes

1 part

Brakes
- Shimano BR-MT200
BR-MT200

Wheels and tires

5 parts

Front hub
- Rocky Mountain
Rear hub
- Sun Ringlé
Rims
- Rocky Mountain
Spokes

2.0 Stainless Not identified
Tires

F: Terrene Cake Eater Fast Rolling Tubeless Studdable 26 x 4.6 // R: Terrene Cake Eater Fast Rolling Tubeless Studdable 26 x 4.6 Not identified

Cockpit and contact points

6 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 450mm

Stack 619mm

Wheelbase 1206mm

Head angle 66.0°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 26″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	425	450	475	500
Stackmm	615	619	629	638
Top tube lengthmm	607	634	661	689
Seat tube lengthmm	380	420	445	480
Head tube lengthmm	95	100	110	120
Head tube angle	66°	66°	66°	66°
Seat tube angle	73.5°	73.5°	73.5°	73.5°
Chainstay lengthmm	455	455	455	455
Wheelbasemm	1179	1206	1235	1264
Front centermm	730	757	786	815
Bottom bracket dropmm	60	60	60	60
Bottom bracket heightmm	283	283	283	283
Standover heightmm	776	793	804	815
Fork rakemm	51	51	51	51
Trailmm	97	97	97	97
Stack/reach ratio	1.45	1.38	1.32	1.28

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
Fork material: Aluminum

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 15.3 in
Highest gear: 78.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire width: 4.6″
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 26″

Technical analysis

2 measures

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

Lowest gear

15.3 gear inches

This value is below the central range for this class.

Cohort: Mountain / Fat bike Model year: 2021
Sample: 58 bicycles with this information
Coverage: 75.3% of the class

Highest gear

78.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Fat bike Model year: 2021
Sample: 58 bicycles with this information
Coverage: 75.3% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 5.9 km/h
Highest gear: 29.9 km/h

Total gear range 510%

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: 15.3–78.0 gear inches
Class reference (p10–p90): 15.3–99.3 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Fat bike Model year: 2021
Lowest gear: 58 bicycles with this information, 75.3% of the class
Highest gear: 58 bicycles with this information, 75.3% 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 2021 builds
Specification	This bicycle Rocky Mountain Blizzard 20	Rocky Mountain Blizzard 10	Rocky Mountain Blizzard 30 (27.5")	Rocky Mountain Blizzard 50 (27.5")
Frame
Fork material	Aluminum	Aluminum	Carbon	Carbon
Drivetrain
Smallest chainring	30	26	30	30
Largest chainring	30	26	30	30
Rear sprockets	12	10	12	Not informed
Smallest sprocket	10	11	10	10
Largest sprocket	51	46	51	51
Lowest gear	15.3 in	14.7 in	16.2 in	16.2 in
Highest gear	78.0 in	61.5 in	82.5 in	82.5 in
Brakes
Brake type	Hydraulic disc	Mechanical disc	Hydraulic disc	Hydraulic disc
Cockpit
Seatpost	Rigid seatpost	Rigid seatpost	Dropper seatpost	Dropper seatpost
Other specifications
Tire width	4.6″	4.6″	4.5″	4.5″
Wheel size	26″	26″	27.5″	27.5″