Alchemy Arktos 29 — Plus NX Eagle

2020 MountainTrail Manufacturer page

Last known price: $5,199

Prices shown first for United States
Travel: 160 / 140 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 32t / 11–50t
Gear range: 455%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–170
MD 165.1–177.8
LG 175.3–188
XL 180.3–195.6

Components

17 of 17 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.

Suspension

2 parts

Drivetrain

6 parts

Brakes

2 parts

Wheels and tires

2 parts

Cockpit and contact points

5 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 444mm

Stack 630mm

Wheelbase 1185mm

Head angle 65.5°

Seat angle 75.0°

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	418	444	452	483
Stackmm	620	630	644	658
Top tube lengthmm	580	610	630	665
Seat tube lengthmm	410	450	483	518
Head tube lengthmm	100	110	125	140
Head tube angle	65.5°	65.5°	65.5°	65.5°
Seat tube angle	75°	75°	75°	75°
Chainstay lengthmm	438.5	438.5	438.5	438.5
Wheelbasemm	1167	1185	1211	1248
Front centermm	731	749	775	812
Bottom bracket dropmm	34	34	34	34
Bottom bracket heightmm	343	343	343	343
Standover heightmm	792	794	802	830
Fork rakemm	41	29	40	40
Trailmm	126	139	127	127
Stack/reach ratio	1.48	1.42	1.43	1.36

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: 160 mm
Rear travel: 140 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 50
Lowest gear: 18.6 in
Highest gear: 84.4 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.3″
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

160 mm

This value is above the central range for this class.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,348 bicycles with this information
Coverage: 93.8% of the class

Lowest gear

18.6 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,217 bicycles with this information
Coverage: 84.6% of the class

Highest gear

84.4 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,217 bicycles with this information
Coverage: 84.6% of the class

Shifting

Mechanical

55 of 1,437 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,437 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.1 km/h
Highest gear: 32.3 km/h

Total gear range 455%

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: 18.6–84.4 gear inches
Class reference (p10–p90): 17.1–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2020
Lowest gear: 1217 bicycles with this information, 84.6% of the class
Highest gear: 1217 bicycles with this information, 84.6% 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 2020 builds

Differences across 2020 builds
Specification	This bicycle Alchemy Arktos 29 — Plus NX Eagle	Alchemy Arktos 27.5 GX Eagle	Alchemy Arktos 27.5 NX Eagle	Alchemy Arktos 27.5 X01 Eagle	Alchemy Arktos 27.5 XT 12 speed	Alchemy Arktos 27.5 XTR
Suspension
Front travel	160 mm	170 mm	170 mm	170 mm	170 mm	170 mm
Rear travel	140 mm	152 mm	152 mm	152 mm	152 mm	152 mm
Drivetrain
Smallest sprocket	11	10	11	10	10	11
Largest sprocket	50	50	50	50	51	51
Lowest gear	18.6 in	17.6 in	17.6 in	17.6 in	17.3 in	17.3 in
Highest gear	84.4 in	88.0 in	80.0 in	88.0 in	88.0 in	80.0 in
Other specifications
Tire width	2.3″	2.5″	2.5″	2.5″	2.5″	2.5″
Wheel size	29″	27.5″	27.5″	27.5″	27.5″	27.5″