Merida Big.Nine 20 Hardtail Mountain Bike Black/Grey

Brand: Merida

SKU: Select a size

Other Year Models

2025

Merida Big.Nine 20 Hardtail Mountain Bike Silk Dark Grey/Black

2026

Merida Big.Nine 20 Hardtail Mountain Bike Fall Green/Silver

2026

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SM MD LG XL XXL

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$999.00 Full price

$999.00

Club price

$1,099.99 Full price

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Alloy Frame/ Suntour Alloy Fork

100mm Front Travel

29" Wheel Size

Hydraulic Disc Brake

Shimano Mixed Groupset

1 x 8 Speed

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Product Details

Description

The Merida Big.Nine 20 is a reliable do-it-all hardtail mountain bike with a quality aluminium frame, a Suntour 100mm travel fork with lockout and a dependable Shimano Essa 1x8 drivetrain. The Big.Nine 20 will tackle trails and hills whilst being equally at home as a weekday warrior on paths and roads. Powerful hydraulic disc brakes will provide stopping power in all conditions, while a more upright riding position allows for comfort and control.

Key Features

Aluminium frame
100mm travel Suntour XCT30 fork with lockout
Tektro hydraulic disc brakes
Shimano Essa 1x8 drivetrain

Specifications

Product Overview

Product

Merida Big.Nine 20 Hardtail Mountain Bike Black/Grey

Brand

Merida

Parent SKU

LYRUAOT3

Size SKUs

SM: MEHA2501037
MD: MEHA2501038
LG: MEHA2501039
XL: MEHA2501040
XXL: MEHA2501041

Year Model

2025

Product Features

Frame Material

Alloy

Colour

Black

Wheel Size

29"

Brake Type

Hydraulic Disc Brake

Gears

1 x 8

Fork Material

Alloy

Front Travel

100mm

Build

Frame

BIG.NINE TFS IV; MAT aluminum; 29x2.25" max. WHS; 135x9 AST; BSA BBR

Fork

SR Suntour XCT30 HLO; Coil; 100 STR; lockout; max. 29x2,25" WHS

Handlebars

MERIDA CC; MAT aluminium; 690 WHB; 15 RHB

Headset

MERIDA M2345

Grips

MERIDA EC

Stem

MERIDA CC; MAT aluminium; 31.8 DSH; 6 ASD 70 mm-S, 80 mm-M, 90 mm-L, 100 mm-XL, 110 mm-XXL

Bottom Bracket

Shimano BB-UN101 73-123

Saddle

MERIDA Sport comfort

Seat Post

MERIDA CC; 30.9 DSP; 15 SSB; MAT aluminium

Seat Clamp

MERIDA COMP QR

Wheels

Wheel Size

29"

Rims

MERIDA CC; 17 IWR; MAT aluminium

Hubs

F: Shimano TX505; 100x9 WHF; 32 SPH; Centerlock / R: Shimano TX505; 135x9 WHR; 32 SPH; Centerlock

Spokes

Black steel

Groupset

Crankset

Shimano ESSA FC-U2001 32 ATC; MAT Aluminium 170 mm-S, 175 mm-M up

Chain

KMC Z8.3

Brakes

Tektro HD-M275; hydraulic brake

Front Rotor

Shimano RT10; 160 mm

Rear Rotor

Shimano RT10; 160 mm

Shifters

Shimano ESSA SL-315-8R

Rear Derailleur

Shimano ESSA RD-U2000-8; GS

Cassette

8 Speed

Frequently Asked Questions

What is the Merida Big.Nine 20 Hardtail Mountain Bike used for?

The Merida Big.Nine 20 Hardtail Mountain Bike is used for recreational mountain biking, trail riding and mixed-surface commuting, handling singletrack, hills and gravel as well as weekday paths and roads.

Why choose the Merida Big.Nine 20 Hardtail Mountain Bike?

Choose the Merida Big.Nine 20 Hardtail Mountain Bike for its sturdy alloy frame, 100mm fork with lockout and reliable Shimano Essa 1x8 drivetrain—features that balance capability, low maintenance and value. Its hydraulic Tektro discs provide strong braking confidence in varied conditions.

Who is the Merida Big.Nine 20 Hardtail Mountain Bike designed for?

The Merida Big.Nine 20 Hardtail Mountain Bike is designed for riders seeking a versatile, entry-to-mid-level hardtail—commuters, weekend trail riders and anyone who wants a comfortable, low-maintenance bike for mixed-surface adventures.

Find Your Size

Step 1: Measure your height

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Step 2: Adjust your inseam

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You can measure your inseam by tucking a book between your legs so there is pressure but it isn’t uncomfortable.
Inseam typically falls with 5cm of the average.

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Your results

For the Merida Big.Nine 20 Hardtail Mountain Bike Black/Grey we suggest the following size.

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XXL

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PERFECT RIDE GUARANTEE

If you don't love it, you can swap it, up to 30 days from purchase!* Learn more »

FREE BIKE BUILD

We'll build your bike for free when you click and collect at any 99 Bikes store.

FIRST FREE TUNE-UP

Every bike comes with a complimentary free tune-up and safety check. Learn more »

All-round trail reliability

Lightweight alloy frame paired with a 100mm Suntour XCT30 fork offers confident control on local singletrack and gravel. Hydraulic disc brakes deliver consistent stopping power in wet or dry conditions.

Comfort-focused ride

A more upright geometry and 29" wheels smooth rough surfaces and reduce fatigue on longer rides. The Suntour fork’s lockout lets you switch to efficient pedalling on roads.

Simple, dependable drivetrain

Shimano Essa 1x8 gearing gives a wide range with fewer maintenance worries. Durable components like the KMC chain and Shimano cassette keep shifting reliable ride after ride.

XXL

Not sure what sized bike is best?

Answer a few short questions and we'll make a recommendation on which size is best for you.

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Legend

Available size

Current size

Unavailable size

Suggested sizing

Merida Big.Nine 20 Hardtail Mountain Bike Black/Grey geometry diagram

Legend

ST Seat Tube
STA Seat Tube Angle
R Reach
TT Top Tube
BD Bottom Bracket Drop
S Stack
CS Chain Stay Length
HT Head Tube
WB Wheel Base
HTA Head Tube Angle
FL Fork Length

Wheel Size

29"

Stack

614

628

642

656

670

Reach

382

398

414

429

445

Top Tube Length

570

590

610

630

650

Seat Tube Length

370

430

470

510

560

Seat Tube Angle

73.0

Fork Length

506

Head Tube Length

100

115

130

145

160

Head Tube Angle

100.0

115.0

130.0

145.0

160.0

Handlebar Height

Bottom Bracket Drop

Chainstay Length

Wheelbase

Standover Height

679

727

763

800

843

Minimum Seat Height

Maximum Seat Height

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