Rocky Mountain Blizzard -50°

2017 MountainFat bike

Fork travel: 120 mm
Wheels: 26″
Drivetrain: 1 × 11 28t / 11–42t
Gear range: 382%
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

20 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 SL Series Custom Hydroformed Alloy. 100mm BB. 12x197mm Axle. Zero Stack Tapered Headtube. Internal Cable Routing. Reverb Stealth Compatible. Not identified

Suspension

1 part

Fork
- RockShox Bluto RL

Drivetrain

6 parts

Brakes

2 parts

Brake levers
- Shimano BL-M506
BL-M506
Brakes
- Shimano BL-M506
BL-M506

Wheels and tires

5 parts

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 414mm

Stack 626mm

Wheelbase 1147mm

Head angle 67.0°

Seat angle 73.0°

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	390	414	432	446
Stackmm	621	626	630	649
Top tube lengthmm	580	605	625	645
Seat tube lengthmm	430	457	483	521
Head tube lengthmm	100	105	110	130
Head tube angle	67°	67°	67°	67°
Seat tube angle	73°	73°	73°	73°
Chainstay lengthmm	435	435	435	435
Wheelbasemm	1122	1147	1168	1190
Front centermm	693	718	739	761
Bottom bracket dropmm	56	56	56	56
Bottom bracket heightmm	287	287	287	287
Standover heightmm	715	736	756	781
Fork rakemm	56	55	56	56
Trailmm	85	86	85	85
Stack/reach ratio	1.59	1.51	1.46	1.46

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: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 28
Largest chainring: 28
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 42
Lowest gear: 17.3 in
Highest gear: 66.2 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 4.8″
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

17.3 gear inches

This value is within the central range for this class.

Cohort: Mountain / Fat bike Model year: 2017
Sample: 65 bicycles with this information
Coverage: 95.5% of the class

Highest gear

66.2 gear inches

This value is within the central range for this class.

Cohort: Mountain / Fat bike Model year: 2017
Sample: 65 bicycles with this information
Coverage: 95.5% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.6 km/h
Highest gear: 25.3 km/h

Total gear range 382%

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: 17.3–66.2 gear inches
Class reference (p10–p90): 15.5–86.7 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Fat bike Model year: 2017
Lowest gear: 65 bicycles with this information, 95.5% of the class
Highest gear: 65 bicycles with this information, 95.5% 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 2017 builds
Specification	This bicycle Rocky Mountain Blizzard -50°	Rocky Mountain Blizzard -10°	Rocky Mountain Blizzard -20°	Rocky Mountain Blizzard -30°
Frame
Fork material	Not informed	Aluminum	Aluminum	Aluminum
Suspension
Suspension configuration	Hardtail	Rigid	Rigid	Rigid
Front travel	120 mm	Not informed	Not informed	Not informed
Drivetrain
Smallest chainring	28	24	24	28
Largest chainring	28	24	24	28
Rear sprockets	11	Not informed	10	11
Smallest sprocket	11	12	11	11
Largest sprocket	42	36	36	42
Highest gear	66.2 in	52.0 in	56.7 in	66.2 in
Brakes
Brake type	Hydraulic disc	Mechanical disc	Mechanical disc	Hydraulic disc
Other specifications
Suspension	Hardtail	Rigid	Rigid	Rigid
Tire width	4.8″	4.5″	4.8″	4.8″

Changes since 2016
Specification	2016 Rocky Mountain Blizzard -50	This bicycle Rocky Mountain Blizzard -50°
Frame
Bicycle weight	15 kg	Not informed
Drivetrain
Smallest chainring	24	28
Largest chainring	24	28
Rear sprockets	10	11
Largest sprocket	36	42
Highest gear	56.7 in	66.2 in
Other specifications
Tire width	Not informed	4.8″