Merida BIG Nine 40

2026 MountainTrail Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £825 Last known price
Fork travel: 120 mm
Wheels: 29″
Drivetrain: 1 × 9 32t / 11–46t
Gear range: 418%
Weight: 14.2 kg 31.3 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

19 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

BIG.NINE TFS V, material: aluminum, 29 wheelsize, 135x9mm axle standard, BSA bottom bracket standard Not identified

Suspension

1 part

Fork
- X-Fusion

Drivetrain

6 parts

Bottom bracket
- Shimano BB-UN101
BB-UN101
Cassette
- SunRace
Chain
- KMC XGlide 11 speeds
Crankset
- Shimano FC-UT400-1 11 speeds
FC-UT400
Rear derailleur
- Shimano Cues RD-U4000 9 speeds
RD-U4000
Shifters
- Shimano Cues SL-U4000
SL-U4000

Brakes

2 parts

Brakes
- Shimano BR-MT200
BR-MT200
Disc rotors
- Shimano SM-RT10
SM-RT10

Wheels and tires

4 parts

Front hub
- Shimano HB-TX505
HB-TX505
Rear hub
- Shimano FH-TX505 11 speeds
FH-TX505
Rims
- Merida
Tires
- Kenda Booster

Cockpit and contact points

6 parts

Handlebar
- Merida
Headset
- FSA
Pedals
- VP VPE-536 BMX bike pedal
VPE-536
Saddle
- Merida
Seatpost
- Merida
Stem
- Merida

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 LG

Table

Reach 430mm

Stack 633mm

Wheelbase 1182mm

Head angle 67.0°

Seat angle 74.0°

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 Reach Stack

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	410	430	450	470
Stackmm	624	633	643	652
Top tube lengthmm	581	603	630	657
Seat tube lengthmm	420	460	510	560
Head tube lengthmm	105	115	130	140
Head tube angle	67°	67°	67°	67°
Seat tube angle	74°	74°	74°	74°
Chainstay lengthmm	460	460	460	460
Wheelbasemm	1158	1182	1206	1229
Front centermm	703	727	751	774
Bottom bracket dropmm	53	53	53	53
Bottom bracket heightmm	321	321	321	321
Standover heightmm	744	773	813	852
Fork rakemm	46	46	46	46
Trailmm	110	110	110	111
Stack/reach ratio	1.52	1.47	1.43	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
Bicycle weight: 14.2 kg

31.3 lb

Suspension

Suspension configuration: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 46
Lowest gear: 20.2 in
Highest gear: 84.4 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: 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

120 mm

This value is within 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

20.2 gear inches

This value is above 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: 7.7 km/h
Highest gear: 32.3 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: 20.2–84.4 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

Differences across 2026 builds
Specification	This bicycle Merida BIG Nine 40	Merida BIG Nine 10K	Merida BIG Nine 15	Merida BIG Nine 20	Merida BIG Nine 20 SE	Merida BIG Nine 3000
Frame
Frame material	Aluminum	Carbon	Aluminum	Aluminum	Aluminum	Carbon
Bicycle weight	14.2 kg	9.1 kg	14.7 kg	Not informed	Not informed	Not informed
Suspension
Suspension configuration	Hardtail	Hardtail	Hardtail	Hardtail	Full suspension	Hardtail
Front travel	120 mm	100 mm	100 mm	100 mm	100 mm	100 mm
Rear travel	Not informed	Not informed	Not informed	Not informed	100 mm	Not informed
Drivetrain
Front chainrings	1	1	2	1	2	1
Smallest chainring	32	30	22	32	22	32
Largest chainring	32	30	36	32	36	32
Rear sprockets	9	Not informed	7	8	8	12
Smallest sprocket	11	9	12	11	11	10
Largest sprocket	46	45	32	45	32	51
Lowest gear	20.2 in	19.3 in	19.9 in	20.6 in	19.9 in	18.2 in
Highest gear	84.4 in	96.7 in	87.0 in	84.4 in	94.9 in	92.8 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Cockpit
Shifting	Mechanical	Electronic	Mechanical	Mechanical	Mechanical	Mechanical
Other specifications
Fork spring	Air	Air	Coil	Coil	Coil	Air
Suspension	Hardtail	Hardtail	Hardtail	Hardtail	Full suspension	Hardtail
Tire width	2.4″	2.4″	2.2″	2.2″	2.2″	2.4″
Wheel material	Aluminum	Carbon	Aluminum	Aluminum	Aluminum	Aluminum