Merida BIG.Nine TR 8000

2025 MountainTrail Manufacturer page

Fork travel: 120 mm
Wheels: 29″
Drivetrain: 1 × 12 34t / 10–52t
Gear range: 520%
Weight: 10.8 kg 23.8 lb · Reference configuration not specified
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

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

Components

13 of 16 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 TR CF3 III, material: carbon, 29x2.4" max wheelsize, 148x12mm axle standard, BSA bottom bracket standard Not identified

Suspension

1 part

Fork
- RockShox SID

Drivetrain

6 parts

Bottom bracket

BSA, 73mm, threaded Not identified
Cassette
- SRAM
Chain
- SRAM GX Eagle Transmission Flattop 12 speeds
Crankset
- SRAM GX Eagle
Rear derailleur
- SRAM GX
Shifters

JD-FL MX lever Not identified

Brakes

2 parts

Wheels and tires

2 parts

Cockpit and contact points

4 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 440mm

Stack 614mm

Wheelbase 1155mm

Head angle 66.9°

Seat angle 74.2°

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	420	440	460	480
Stackmm	614	614	624	633
Top tube lengthmm	594	614	637	659
Seat tube lengthmm	380	410	440	470
Head tube lengthmm	95	95	105	115
Head tube angle	66.9°	66.9°	66.9°	66.9°
Seat tube angle	74.2°	74.2°	74.2°	74.2°
Chainstay lengthmm	430	433	436	439
Wheelbasemm	1132	1155	1182	1209
Front centermm	708	728	752	776
Bottom bracket dropmm	57	57	57	57
Bottom bracket heightmm	317	317	317	317
Standover heightmm	711	711	717	738
Fork rakemm	44	44	44	44
Trailmm	112	112	112	112
Stack/reach ratio	1.46	1.40	1.36	1.32

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: Carbon
Bicycle weight: 10.8 kg

23.8 lb
Weight limit: 135 kg

297.6 lb

Suspension

Suspension configuration: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 34
Largest chainring: 34
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 52
Lowest gear: 19.0 in
Highest gear: 98.6 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Dropper seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.4″
Wheel material: Carbon
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: 2025
Sample: 1,810 bicycles with this information
Coverage: 97.5% of the class

Lowest gear

19.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,384 bicycles with this information
Coverage: 74.6% of the class

Highest gear

98.6 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,384 bicycles with this information
Coverage: 74.6% of the class

Shifting

Electronic

388 of 1,849 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,849 bicycles with this information
Coverage: 99.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.3 km/h
Highest gear: 37.8 km/h

Total gear range 520%

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: 19.0–98.6 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: 2025
Lowest gear: 1384 bicycles with this information, 74.6% of the class
Highest gear: 1384 bicycles with this information, 74.6% 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 2025 builds
Specification	This bicycle Merida BIG.Nine TR 8000	Merida BIG.Nine 100	Merida BIG.Nine 10K	Merida BIG.Nine 15	Merida BIG.Nine 15 SE	Merida BIG.Nine 200
Frame
Frame material	Carbon	Aluminum	Carbon	Aluminum	Aluminum	Aluminum
Bicycle weight	10.8 kg	14.1 kg	Not informed	Not informed	Not informed	13.8 kg
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	2	1	3	3	1
Smallest chainring	34	22	30	24	24	32
Largest chainring	34	36	30	42	42	32
Rear sprockets	12	9	Not informed	7	8	10
Smallest sprocket	10	11	9	12	11	11
Largest sprocket	52	36	45	32	32	48
Lowest gear	19.0 in	17.7 in	19.3 in	21.8 in	21.8 in	19.3 in
Highest gear	98.6 in	94.9 in	96.7 in	101.5 in	110.7 in	84.4 in
Cockpit
Derailleur hanger	UDH	Not informed	Not informed	Not informed	Not informed	Not informed
Seatpost	Dropper seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost
Shifting	Electronic	Mechanical	Electronic	Mechanical	Mechanical	Mechanical
Other specifications
Fork spring	Air	Air	Air	Coil	Coil	Air
Suspension	Hardtail	Hardtail	Hardtail	Hardtail	Full suspension	Hardtail
Tire width	2.4″	2.25″	2.4″	2.2″	2.2″	2.25″
Wheel material	Carbon	Aluminum	Carbon	Aluminum	Aluminum	Aluminum