NS Define AL 140 1

2026 MountainTrail Manufacturer page

Travel: 150 / 140 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 32t / 11–50t
Gear range: 455%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–170
MD 168–179
LG 176–187

Components

17 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

NS Bikes Define AL w/ 140mm travel Not identified

Suspension

2 parts

Drivetrain

6 parts

Brakes

1 part

Brakes
- SRAM G2

Wheels and tires

4 parts

Front hub
- NS Bikes
Rear hub
- NS Bikes
Rims

Octane One Solar 29”, 32h, tubeless ready Not identified
Tires
- Maxxis Rekon

Cockpit and contact points

6 parts

Grips
- NS Bikes
Handlebar
- NS Bikes
Headset

GW integrated tapered IS42/IS52, sealed bearings Not identified
Saddle
- WTB Volt
Seatpost
- Race Face Aeffect R Dropper Post
Stem
- NS Bikes

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 463mm

Stack 636mm

Wheelbase 1233mm

Head angle 65.0°

Seat angle 76.0°

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 3 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	433	463	492
Stackmm	628	636	646
Top tube lengthmm	585	618	651
Seat tube lengthmm	396	432	483
Head tube lengthmm	110	120	130
Head tube angle	65°	65°	65°
Seat tube angle	76°	76°	76°
Chainstay lengthmm	440	440	440
Wheelbasemm	1198	1233	1267
Front centermm	761	795	829
Bottom bracket dropmm	37	37	37
Bottom bracket heightmm	333	333	333
Standover heightmm	742	738	735
Fork rakemm	46	47	48
Trailmm	124	123	122
Stack/reach ratio	1.45	1.37	1.31
Suspension and parts
Front travelmm	150	150	150

Not published by the manufacturer: 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: Full suspension
Front travel: 150 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: 2.4″
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

150 mm

This value is above the central range for this class.

Cohort: Mountain / Trail Model year: 2026
Sample: 1,644 bicycles with this information
Coverage: 96.3% of the class

Lowest gear

18.6 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2026
Sample: 1,229 bicycles with this information
Coverage: 72.0% of the class

Highest gear

84.4 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2026
Sample: 1,229 bicycles with this information
Coverage: 72.0% of the class

Shifting

Mechanical

389 of 1,706 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2026
Sample: 1,706 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: 2026
Lowest gear: 1229 bicycles with this information, 72.0% of the class
Highest gear: 1229 bicycles with this information, 72.0% 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 2026 builds
Specification	This bicycle NS Define AL 140 1	NS Define AL 150 0	NS Define AL 150 1	NS Define AL 150 2	NS Define AL 155 1	NS Define AL 155 2
Suspension
Front travel	150 mm	160 mm	160 mm	160 mm	170 mm	170 mm
Rear travel	140 mm	150 mm	150 mm	150 mm	155 mm	155 mm
Drivetrain
Smallest sprocket	11	Not informed	11	11	11	11
Largest sprocket	50	Not informed	50	51	50	51
Lowest gear	18.6 in	Not informed	18.6 in	18.2 in	18.6 in	18.2 in
Highest gear	84.4 in	Not informed	84.4 in	84.4 in	84.4 in	84.4 in
Cockpit
Seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Rigid seatpost	Dropper seatpost	Dropper seatpost
Other specifications
Tire width	2.4″	2.35″	2.5″	2.4″	2.5″	2.4″