Specialized Hellga Expert

Name: Specialized Hellga Expert
Brand: Specialized

2017 MountainFat bike Manufacturer page

Suspension: Rigid
Wheels: 26″
Drivetrain: 1 × 11 28t / 10–42t
Gear range: 420%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–170
MD 168–179
LG 176–187

Components

12 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

Specialized M4 Aluminum, smooth welds, tapered head tube, forged post-mount disc dropouts, 190mm rear hub spacing, replaceable alloy derailleur hanger Not identified

Suspension

1 part

Fork
- Specialized

Drivetrain

6 parts

Bottom bracket

PF30 Included with crankset Not identified
Cassette
- SRAM 10–42t
Chain
- KMC
Crankset

e.13, 11-speed, PF30, 100mm spindle, 28T Not identified
Rear derailleur
- SRAM X01
Shifters
- SRAM X1 X-ACTUATION Trigger 11 speeds

Brakes

1 part

Brakes
- Shimano Deore XT

Wheels and tires

5 parts

Front hub
- Specialized
Rear hub
- Specialized
Rims

Stout XC, hookless alloy, single wall, 90mm inner width, sleeve joint, 32h Not identified
Spokes

Stainless, butted, 2.0/1.8/2.0mm, black Not identified
Tires

Front: Ground Control Fat, Control casing, 26x4.6"", 120TPI, Aramid folding bead, 2Bliss Ready, Rear: Ground Control Fat, Control casing, 26x4.6"", 120TPI, Aramid folding bead, 2Bliss Ready Not identified

Cockpit and contact points

6 parts

Grips
- Specialized
Handlebar
- Specialized
Pedals
- Specialized
Saddle

Women's Body Geometry Myth Sport, steel rails, 155mmmm Not identified
Seatpost

Alloy, 2-bolt clamp, 12.5mm offset, 30.9mm, anti-corrosion hardware Not identified
Stem
- Specialized

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 400mm

Stack 590mm

Wheelbase 1088mm

Head angle 70.5°

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 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	380	400	415
Stackmm	580	590	604
Top tube lengthmm	552	575	594
Seat tube lengthmm	381	430	470
Head tube lengthmm	100	110	125
Head tube angle	70.5°	70.5°	70.5°
Seat tube angle	73.5°	73.5°	73.5°
Chainstay lengthmm	455	455	455
Wheelbasemm	1065	1088	1108
Front centermm	617	640	660
Bottom bracket dropmm	60	60	60
Bottom bracket heightmm	316	316	316
Standover heightmm	676	702	728
Fork rakemm	47	47	47
Trailmm	83	83	83
Stack/reach ratio	1.53	1.48	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: womens
Frame material: Aluminum
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 28
Largest chainring: 28
Rear sprockets: 11
Smallest sprocket: 10
Largest sprocket: 42
Lowest gear: 17.3 in
Highest gear: 72.8 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: PF30
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

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

72.8 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: 27.9 km/h

Total gear range 420%

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: 17.3–72.8 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

Differences across 2017 builds
Specification	This bicycle Specialized Hellga Expert	Specialized Hellga	Specialized Hellga Comp
Frame
Fork material	Carbon	Aluminum	Carbon
Drivetrain
Front chainrings	1	2	2
Smallest chainring	28	22	22
Largest chainring	28	36	36
Rear sprockets	11	10	10
Smallest sprocket	10	11	11
Largest sprocket	42	36	36
Lowest gear	17.3 in	15.9 in	15.9 in
Highest gear	72.8 in	85.1 in	85.1 in
Brakes
Brake type	Hydraulic disc	Mechanical disc	Hydraulic disc
Other specifications
Bottom bracket standard	PF30	BB30	BB30