BIG.NINE 20
Merida
Crosscountry
BIG.NINE 20 is an alloy cross-country mountain bike (2025), from Merida, part of the Bignine family. It is a strong match for a wide range of riders thanks to its fit flexibility, with a setup that gives you a balanced riding position, while being best for smoother trails and efficient rolling. Metric-wise, it stands out for strong value-for-money versus many similar bikes, good fit flexibility for dialing in rider position, and strong speed potential on smoother terrain. Use MatchBikes.com to compare this bike with nearby cross-country options.
6.9
Rating

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Score Summary
Performance
5.8
Value
9.9
Fit
7.0
Performance
Built for speed and efficiency
Speed
6.0
Low
Climbing Efficiency
6.0
All-Rounder
Suspension
5.0
Confident trail control
Fit
Dialed-in Fit & Comfort
Riding Position
6.0
Balanced
Fit Flexibility
8.2
Adjustable
Ride Comfort
6.4
Balanced
Value
Value for Money
9.9
Exceptional Value
Surface Range
Flow TrailsSpecifications
General
Brand
Merida
Model
BIG.NINE 20
Year
2025
Price
$609
Category
Mountain
Sub Category
Crosscountry
Groupset
Shimano
Frame
Frame
BIG.NINE TFS IV, material: aluminum, 29x2.25" max. wheelsize, 135x9mm axle standard, BSA bottom bracket standard
Suspension Fork
Suntour XCT30 HLO, Coil, 100mm suspension travel, lockout, 29x2,25" max. wheelsize
Suspension Type
Hardtail
Drivetrain
Shift Levers
Shimano ESSA SL-315-8R
Rear Derailleur
Shimano ESSA RD-U2000-8, GS
Cassette
Shimano CS-HG400-8, 11-45 teeth, 8 speed
Crank
Shimano ESSA FC-U2001 32 teeth, MAT Aluminium, 170 mm-S, 175 mm-M up
Bottom Bracket
BSA, 73mm, threaded
Chain
KMC Z8.3
Wheels
Front Hub
Shimano TX505, 100x9mm width front hub, 32 spoke holes, Centerlock
Rear Hub
Shimano TX505, 135x9mm width rear hub, 32 spoke holes, Centerlock
Rims
MERIDA CC, 17mm inner width, material: aluminium
Spokes
Black steel
Tires
MERIDA K1080, 29x2.2", wire
Brakes
Brake Type
Hydraulic Disc
Brake Description
Tektro HD-M275, hydraulic brake
Cockpit
Handlebar
MERIDA CC, material: aluminium, 690mm width, 15mm rise
Seat
Saddle
MERIDA Sport comfort
Seatpost
MERIDA CC, 30.9mm diameter, 15mm setback, material: aluminium
Geometry
| Measurement | MD | LG | XL | XXL |
|---|---|---|---|---|
| Stack Reach Ratio | 1.578 mm | 1.551 mm | 1.529 mm | 1.506 mm |
| Bottom Bracket Height | 314 mm | 314 mm | 314 mm | 314 mm |
| Front Center | 657 mm | 677 mm | 698 mm | 719 mm |
| Rake | 46 mm | 45 mm | 46 mm | 46 mm |
| Trail | 87 mm | 88 mm | 87 mm | 87 mm |
| Stack | 628 mm | 642 mm | 656 mm | 670 mm |
| Reach | 398 mm | 414 mm | 429 mm | 445 mm |
| Top Tube Length | 590 mm | 610 mm | 630 mm | 650 |
| Seat Tube Angle | 73 ° | 73 ° | 73 ° | 73 ° |
| Seat Tube Length | 430 mm | 470 mm | 510 mm | 560 mm |
| Head Tube Angle | 70 ° | 70 ° | 70 ° | 70 ° |
| Head Tube Length | 115 mm | 130 mm | 145 mm | 160 mm |
| Chainstay Length | 440 mm | 440 mm | 440 mm | 440 mm |
| Wheelbase | 1090 mm | 1110 mm | 1131 mm | 1152 mm |
| Bottom Bracket Drop | 60 mm | 60 mm | 60 mm | 60 mm |
| Standover Height | 727 mm | 763 mm | 800 mm | 843 mm |
| Wheels | 29" | 29" | 29" | 29" |






















































