Evil Following / I9 Hydra AXS

2021 MountainTrail Manufacturer page

Travel: 130 / 120 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 32t / 10–52t
Gear range: 520%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

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

Components

14 of 19 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

Following 120mm Travel, UD Carbon, Full Internal Cable Routing, SB+ 157, Integrated Chain Guide, Threaded BB Not identified

Suspension

2 parts

Drivetrain

7 parts

Bottom bracket

73mm Threaded Not identified
Cassette
- SRAM XG-1295 Eagle 12 speeds 10–52t
XG-1295XG-1295-B1
Chain
- SRAM XX1 Eagle 12 speeds
Crankset
- SRAM X01 Eagle DUB 11 speeds 32t
Front derailleur

Single Ring Only Not identified
Rear derailleur
- SRAM X01 Eagle AXS 12 speeds
Shifters
- SRAM

Brakes

1 part

Brakes

Post Mount 180mm Not identified

Wheels and tires

2 parts

Rims

120mm Not identified
Tires
- Maxxis Minion

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 460mm

Stack 604mm

Wheelbase 1176mm

Head angle 67.9°

Seat angle 77.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ 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	440	460	480	500
Stackmm	586	604	604	614
Top tube lengthmm	585	609	626	646
Seat tube lengthmm	381	432	470	508
Head tube lengthmm	90	110	110	120
Head tube angle	67.9°	67.9°	67.9°	67.9°
Seat tube angle	77°	77°	77°	77°
Chainstay lengthmm	430	430	430	430
Wheelbasemm	1148	1176	1196	1219
Front centermm	720	748	768	791
Bottom bracket dropmm	36	36	36	36
Bottom bracket heightmm	335	335	335	335
Standover heightmm	650	664	675	689
Fork rakemm	52	53	53	52
Trailmm	96	96	96	96
Stack/reach ratio	1.33	1.31	1.26	1.23

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: Carbon

Suspension

Suspension configuration: Full suspension
Front travel: 130 mm
Rear travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 52
Lowest gear: 17.9 in
Highest gear: 92.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.5″
Wheel material: Aluminum
Wheel size: 29″

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: 2021
Sample: 1,324 bicycles with this information
Coverage: 98.1% of the class

Lowest gear

17.9 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,137 bicycles with this information
Coverage: 84.2% of the class

Highest gear

92.8 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,137 bicycles with this information
Coverage: 84.2% of the class

Shifting

Electronic

53 of 1,346 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,346 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.8 km/h
Highest gear: 35.5 km/h

Total gear range 520%

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: 17.9–92.8 gear inches
Class reference (p10–p90): 16.9–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2021
Lowest gear: 1137 bicycles with this information, 84.2% of the class
Highest gear: 1137 bicycles with this information, 84.2% of the class