Merida BIG Seven 20 SE

2025 MountainCross-country Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £700 Last known price
Travel: 100 / 100 mm Fork / rear shock
Wheels: 27.5″
Drivetrain: 3 × 8 24–42t / 11–32t
Gear range: 509%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 151–164
SM 160–172
MD 166–179

Components

20 of 21 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.SEVEN TFS IV, 100mm suspension travel, material: aluminium, 27.5x2.25" max. wheelsize, 135x9mm axle standard, BSA bottom bracket standard Not identified

Suspension

1 part

Fork
- SR Suntour XCT30

Drivetrain

7 parts

Bottom bracket
- Shimano BB-UN101
BB-UN101
Cassette
- SunRace
Chain
- SunRace
Crankset
- Shimano FC-TY301 8 speeds
FC-TY301
Front derailleur
- Shimano Tourney FD-TY700
FD-TY700
Rear derailleur
- Shimano Altus RD-M370-SGS 9 speeds
RD-M370-SGSRD-M370
Shifters
- Shimano ST-EF505
ST-EF505

Brakes

2 parts

Brakes
- Shimano
ST-EF505
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
- Merida

Cockpit and contact points

6 parts

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM

Table

Reach 394mm

Stack 577mm

Wheelbase 1078mm

Head angle 69.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ 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
Reachmm	378	394	409
Stackmm	563	577	591
Top tube lengthmm	550	570	590
Seat tube lengthmm	340	380	440
Head tube lengthmm	100	115	130
Head tube angle	69°	69°	69°
Seat tube angle	73°	73°	73°
Chainstay lengthmm	430	430	430
Wheelbasemm	1056	1078	1099
Front centermm	628	650	671
Bottom bracket dropmm	30	30	30
Bottom bracket heightmm	325	325	325
Standover heightmm	649	689	740
Fork rakemm	41	42	43
Trailmm	93	91	90
Stack/reach ratio	1.49	1.46	1.45

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: Full suspension
Front travel: 100 mm
Rear travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 24
Largest chainring: 42
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 20.6 in
Highest gear: 105.0 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: Coil
Tire width: 2.2″
Wheel material: Aluminum
Wheel size: 27.5″

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: 40.2 km/h

Total gear range 509%

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: 20.6–105.0 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

Differences across 2025 builds
Specification	This bicycle Merida BIG Seven 20 SE	Merida BIG Seven 20
Suspension
Suspension configuration	Full suspension	Hardtail
Rear travel	100 mm	Not informed
Drivetrain
Front chainrings	3	1
Smallest chainring	24	32
Largest chainring	42	32
Largest sprocket	32	45
Lowest gear	20.6 in	19.6 in
Highest gear	105.0 in	80.0 in
Other specifications
Suspension	Full suspension	Hardtail