Merida eBIG.Nine 400 EQ

2025 MountainCross-country Electric bicycle Manufacturer page

Fork travel: 100 mm
Wheels: 29″
Drivetrain: 1 × 10 34t / 11–48t
Gear range: 436%
Battery: 630 Wh
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

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

Components

21 of 25 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

eBIG.NINE LITE III, material: aluminium, 29x2.35" without fender max./ 29"x2.25" with fender max. wheelsize, 148x12mm axle standard, intube Not identified

Electric system

3 parts

Suspension

1 part

Fork
- SR Suntour

Drivetrain

6 parts

Bottom bracket

BSA, 73mm, threaded Not identified
Cassette
- Shimano CS-LG300-10 10 speeds
CS-LG300-10
Chain
- Shimano CN-LG500
CN-LG500
Crankset
- Shimano SM-CRE70-B 1 speed
SM-CRE70
Rear derailleur
- Shimano Cues RD-U4000 9 speeds
RD-U4000
Shifters
- Shimano Cues SL-U6000
SL-U6000

Brakes

2 parts

Wheels and tires

5 parts

Front hub
- Shimano HB-TC500
HB-TC500
Rear hub
- Shimano FH-TC500-HM-B 11 speeds
FH-TC500-HM
Rims
- Merida
Spokes

Black stainless Not identified
Tires
- Kenda Booster

Cockpit and contact points

4 parts

Other components

3 parts

Fenders
- Sunny Wheel
SW-FA311-65ASW-FA311-65E1
Racks
- Merida
Kickstand

CL-KA98, 29" Not identified

CL-KA98

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 427mm

Stack 640mm

Wheelbase 1183mm

Head angle 67.5°

Seat angle 74.5°

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	411	427	445	462
Stackmm	636	640	650	659
Top tube lengthmm	588	605	625	645
Seat tube lengthmm	380	430	480	530
Head tube lengthmm	115	120	130	140
Head tube angle	67.5°	67.5°	67.5°	67.5°
Seat tube angle	74.5°	74.5°	74.5°	74.5°
Chainstay lengthmm	465	465	465	465
Wheelbasemm	1165	1183	1204	1225
Front centermm	707	725	746	767
Bottom bracket dropmm	62.5	62.5	62.5	62.5
Bottom bracket heightmm	312	312	312	312
Standover heightmm	719	750	794	835
Fork rakemm	51	52	51	51
Trailmm	100	99	100	100
Stack/reach ratio	1.55	1.50	1.46	1.43

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
Weight limit: 140 kg

308.6 lb

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 34
Largest chainring: 34
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 48
Lowest gear: 20.5 in
Highest gear: 89.6 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Electric system

Battery capacity: 630 Wh

Additional specifications

Battery: Shimano EN806 630 Wh, removeable, No Range Extender compatibility
Bottom bracket standard: BSA
Fork spring: Coil
Tire width: 2.2″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

2 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

100 mm

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2025
Sample: 1,508 bicycles with this information
Coverage: 87.8% of the class

Shifting

Mechanical

222 of 1,648 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2025
Sample: 1,648 bicycles with this information
Coverage: 95.9% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.9 km/h
Highest gear: 34.3 km/h

Total gear range 436%

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: 20.5–89.6 gear inches

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 2025 builds
Specification	This bicycle Merida eBIG.Nine 400 EQ	Merida eBIG.Nine 400	Merida eBIG.Nine 675
Frame
Bicycle weight	Not informed	24.2 kg	23.7 kg
Drivetrain
Rear sprockets	10	10	12
Smallest sprocket	11	11	10
Largest sprocket	48	48	50
Lowest gear	20.5 in	20.5 in	19.7 in
Highest gear	89.6 in	89.6 in	98.6 in
Electric bicycle systems
Battery capacity	630 Wh	630 Wh	750 Wh
Other specifications
Fork spring	Coil	Coil	Air