Merida BIG.Nine 400

2027 MountainTrail Manufacturer page

Fork travel: 120 mm
Wheels: 29″
Drivetrain: 1 × 11 32t / 10–50t
Gear range: 500%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

18 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, Smooth welding Not identified

Suspension

1 part

Fork
- RockShox Judy Gold RL

Drivetrain

6 parts

Bottom bracket
- Shimano BB-MT501
BB-MT501MT-501
Cassette
- SunRace 10–50t
CS-UX700
Chain
- KMC XGlide 11 speeds
Crankset
- Shimano Cues FC-U6000 11 speeds
FC-U6000
Rear derailleur
- Shimano Cues RD-U6000 11 speeds
RD-U6000
Shifters
- Shimano SL-MT500-IL
SL-MT500-IL

Brakes

2 parts

Wheels and tires

5 parts

Front hub
- Shimano HB-QC300
HB-QC300
Rear hub
- Shimano FH-QC300-HM 11 speeds
FH-QC300-HM
Rims
- Merida
Spokes

Black stainless Not identified
Tires
- Maxxis Rekon Race

Cockpit and contact points

5 parts

Sizes and geometry

5 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 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	390	410	430	450	470
Stackmm	619	624	633	643	652
Top tube lengthmm	559	581	603	630	657
Seat tube lengthmm	370	420	460	510	560
Head tube lengthmm	100	105	115	130	140
Head tube angle	67°	67°	67°	67°	67°
Seat tube angle	74°	74°	74°	74°	74°
Chainstay lengthmm	460	460	460	460	460
Wheelbasemm	1136	1158	1182	1206	1229
Front centermm	681	703	727	751	774
Bottom bracket dropmm	53	53	53	53	53
Bottom bracket heightmm	321	321	321	321	321
Standover heightmm	694	744	773	813	852
Fork rakemm	46	46	46	46	46
Trailmm	110	110	110	110	111
Stack/reach ratio	1.59	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

Suspension

Suspension configuration: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 11
Smallest sprocket: 10
Largest sprocket: 50
Lowest gear: 18.6 in
Highest gear: 92.8 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

120 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2027
Sample: 334 bicycles with this information
Coverage: 95.4% of the class

Lowest gear

18.6 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2027
Sample: 274 bicycles with this information
Coverage: 78.2% of the class

Highest gear

92.8 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2027
Sample: 274 bicycles with this information
Coverage: 78.2% of the class

Shifting

Mechanical

112 of 350 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2027
Sample: 350 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.1 km/h
Highest gear: 35.5 km/h

Total gear range 500%

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: 18.6–92.8 gear inches
Class reference (p10–p90): 16.7–104.4 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2027
Lowest gear: 274 bicycles with this information, 78.2% of the class
Highest gear: 274 bicycles with this information, 78.2% 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 2027 builds
Specification	This bicycle Merida BIG.Nine 400	Merida BIG.Nine 10k	Merida BIG.Nine 15	Merida BIG.Nine 200	Merida BIG.Nine 20	Merida BIG.Nine 3000
Frame
Frame material	Aluminum	Carbon	Aluminum	Aluminum	Aluminum	Carbon
Suspension
Front travel	120 mm	100 mm	100 mm	120 mm	120 mm	120 mm
Drivetrain
Front chainrings	1	1	2	1	1	1
Smallest chainring	32	32	22	32	32	32
Largest chainring	32	32	36	32	32	32
Rear sprockets	11	12	7	10	8	12
Smallest sprocket	10	9	12	11	11	10
Largest sprocket	50	45	32	48	45	51
Lowest gear	18.6 in	20.6 in	19.9 in	19.3 in	20.6 in	18.2 in
Highest gear	92.8 in	103.1 in	87.0 in	84.4 in	84.4 in	92.8 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost
Shifting	Mechanical	Electronic	Mechanical	Mechanical	Mechanical	Mechanical
Other specifications
Fork spring	Air	Air	Coil	Air	Coil	Air
Tire width	2.4″	2.4″	2.2″	2.4″	2.4″	2.4″
Wheel material	Aluminum	Carbon	Aluminum	Aluminum	Aluminum	Aluminum

Changes since 2026
Specification	2026 Merida BIG.Nine 400	This bicycle Merida BIG.Nine 400
Frame
Bicycle weight	13 kg	Not informed
Weight limit	135 kg	Not informed
Suspension
Front travel	100 mm	120 mm
Drivetrain
Smallest sprocket	11	10
Highest gear	84.4 in	92.8 in
Cockpit
Seatpost	Rigid seatpost	Dropper seatpost
Other specifications
Tire width	2.25″	2.4″