Jamis roughneck

2019 MountainFat bike Manufacturer page

Last known price: $1,849

Prices shown first for United States
Suspension: Rigid
Wheels: 26″
Drivetrain: 1 × 11 30t / 11–46t
Gear range: 418%
Weight: 14.97 kg 33.0 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Mechanical disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

14 of 18 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

Triple-butted 6061 air-formed aluminum, 1.5 - 1 1/8” tapered head tube, 12x197mm rear hub spacing, post mount disc brakes, 100mm bottom bracket shell, rack mounts, internal cable routing, dropper seat post routing, replaceable derailleur hanger Not identified

Suspension

1 part

Fork

Triple-butted 6061 air-formed aluminum, suspension corrected, tapered steerer, 15x150mm hub spacing, post-mount disc, rack/bottle mounts Not identified

Drivetrain

6 parts

Bottom bracket
- Race Face
Cassette
- Shimano SLX CS-M7000-11 11–46t
CS-M7000-11
Chain
- KMC X11 11 speeds
Crankset
- Race Face Ride 30t
Rear derailleur
- Shimano SLX
Shifters
- Shimano SLX SL-M7000
SL-M7000

Brakes

1 part

Brakes
- TRP SPYKE

Wheels and tires

2 parts

Rims

Sun Ringle MuleFut 80 SL, STR Tubeless Ready, 15x150 Front hub, 12x197 Rear hub, Wheelsmith spokes, Brass nipples Not identified
Tires
- Vee Tire

Cockpit and contact points

7 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 17"

Table

Reach 418mm

Stack 596mm

Wheelbase 1139mm

Head angle 69.0°

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 Reach Stack

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	401	418	434	449
Stackmm	586	596	610	624
Top tube lengthmm	580	600	620	640
Seat tube lengthmm	381	432	483	533
Head tube lengthmm	100	110	125	140
Head tube angle	69°	69°	69°	69°
Seat tube angle	73°	73°	73°	73°
Chainstay lengthmm	457	457	457	457
Wheelbasemm	1118	1139	1160	1181
Front centermm	668	689	709	730
Bottom bracket dropmm	60	60	60	60
Bottom bracket heightmm	283	283	283	283
Standover heightmm	744	779	816	850
Fork rakemm	58	58	58	58
Trailmm	70	70	70	70
Stack/reach ratio	1.46	1.43	1.41	1.39

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
Bicycle weight: 14.97 kg

33.0 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 46
Lowest gear: 17.0 in
Highest gear: 70.9 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 4.5″
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

17.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Fat bike Model year: 2019
Sample: 82 bicycles with this information
Coverage: 95.3% of the class

Highest gear

70.9 gear inches

This value is within the central range for this class.

Cohort: Mountain / Fat bike Model year: 2019
Sample: 82 bicycles with this information
Coverage: 95.3% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.5 km/h
Highest gear: 27.2 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: 17.0–70.9 gear inches
Class reference (p10–p90): 15.6–88.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Fat bike Model year: 2019
Lowest gear: 82 bicycles with this information, 95.3% of the class
Highest gear: 82 bicycles with this information, 95.3% of the class