Merida Big Nine 20 SE Mountain Bike 2025 - Hardtail MTB
The Merida Big Nine 20 SE is a dependable aluminium hardtail built for comfort, control, and versatility. With Shimano 24-speed gearing, hydraulic disc brakes, and a 100mm suspension fork, it’s ready for off-road trails, fitness rides, and weekend adventures.
Key Features:
- TFS IV 6061 aluminium frame, internal cable routing
- SR Suntour XCT30 fork, 100mm travel
- Shimano 24-speed drivetrain
- Shimano ST-EF505 hydraulic disc brakes
- 29" Merida CC wheels, 2.2" Merida tyres
- Mudguard and kickstand mounts
- Tapered head tube for upgrade options
- Available with 0% APR finance
Merida has a long-standing reputation for producing tough, reliable aluminium hardtails, and the Big Nine 20 SE is no exception. Built around the TFS IV 6061 aluminium frame, it combines double-butted, technoformed tubing for strength and reduced weight, with internally routed cables for a clean, low-maintenance setup. The tapered head tube allows for future fork upgrades, while the chainstay-mounted disc brake keeps the calliper protected and enhances braking performance. Practical touches like mudguard and kickstand mounts make it adaptable for both leisure and utility use.
The SR Suntour XCT30 coil-sprung fork provides 100mm of travel to smooth out rough tracks and trail chatter, giving more control and comfort over uneven terrain. Shimano’s 24-speed drivetrain offers a wide gear range to tackle varied gradients, whether you’re climbing steep hills or cruising on the flat. Hydraulic disc brakes from Shimano ensure strong, predictable stopping power in all conditions.
Rolling on 29” Merida CC alloy wheels with 2.2” Merida K1080 tyres, the Big Nine 20 SE delivers stability, traction, and good rollover ability to keep momentum on mixed terrain. Whether you’re exploring cross-country trails, using it for fitness, or simply enjoying a weekend ride, this bike is built to give you dependable performance every time you head out.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | TFS IV - 6061 aluminium, double butted and technoformed. Tapered head tube. Chain stay mounted disc brake. Internal cable routing. Mudguard and kick stand mounts. BSA threaded BB. 135mm x 9mm axle. Max. tyre size 29" x 2.25" |
| Fork | SR Suntour XCT30; Coil; 100mm travel; Max tyre size 29" x 2.25" |
| Headset | Merida M2345 |
| Stem | Merida CC; aluminium; 31.8mm diameter; 6 degree rise - Length - 70mm (S), 80mm (M), 90mm (L), 100mm (XL), 110mm (XXL) |
| Bars | Merida CC; aluminium; 690mm wide; 15mm rise |
| Front Brake | Shimano ST-EF505; hydraulic disc brake caliper with Shimano RT10; 160mm rotor |
| Rear Brake | Shimano ST-EF505; hydraulic disc brake caliper with Shimano RT10; 160mm rotor |
| Brake Lever | Shimano EF505 |
| Front Mech | Shimano FD-M315-TS |
| Rear Mech | Shimano RD-M302-8; SGS |
| Shifters | Shimano FH-TY505 |
| Speed | 24 |
| Rims | Merida CC; 17mm inner rim width; Aluminium |
| Front Hub | Shimano TX505; 100 x 9mm; 32 spoke; Centerlock |
| Rear Hub | Shimano TX505; 135 x 9mm; 32 spoke; Centerlock |
| Spokes | Black steel |
| Front Tyre | Merida K1080; 29" x 2.2"; wire bead |
| Rear Tyre | Merida K1080; 29" x 2.2"; wire bead |
| Seat Post | Merida CC; 30.9mm diameter; 15 mm layback; Aluminium |
| Saddle | Merida Sport comfort |
| Chainset | Shimano TY301; 42-34-24 tooth chainset; Aluminium; Crank length - 170mm (S), 175mm (M and up) |
| Bottom Bracket | FSA TH-7420ST, 68-124 |
| Chain | KMC Z8.3 |
| Cassette | Sunrace CSM558AU; 11-32 teeth; 8 speed |
| Pedals | VP VPE-891 |
Merida Big Nine 2025 Size Chart
|
Frame Size |
Height cm |
Height Feet / Inches |
|
XS |
< 163 cm |
<5’4” |
|
S |
157 - 173 cm |
5’2” – 5’8” |
|
M |
167 - 183 cm |
5’6” – 6’0” |
|
L |
177 - 190 cm |
5’10” – 6’3” |
|
XL |
187 - 196 cm |
6’2” – 6’5” |
|
XXL |
> 192 cm |
>6’4” |
What size frame do I need if I am between sizes? - read here
Merida Big Nine 2025 Geometry Chart
| Size | S | M | L | XL | XXL |
|---|---|---|---|---|---|
| Stack | 606 | 606 | 615 | 624 | 634 |
| Reach | 432 | 452 | 472 | 492 | 512 |
| Head Tube Length | 95 | 95 | 105 | 115 | 125 |
| Head Tube Angle | 68 | 68 | 68 | 68 | 68 |
| Bottom Bracket Drop | 65 | 65 | 65 | 65 | 65 |
| Fork Length | 506 | 506 | 506 | 506 | 506 |
| Chainstay Length | 430 | 433 | 436 | 439 | 442 |
| Wheelbase | 1123 | 1146 | 1173 | 1199 | 1226 |
| Top Tube Length (horizontal) | 591 | 611 | 633 | 655 | 678 |
| Standover Height | 704 | 704 | 710 | 731 | 752 |
| Seat Tube Length | 380 | 410 | 440 | 470 | 500 |
| Seat Tube Angle | 75.3 | 75.3 | 75.3 | 75.3 | 75.3 |
| Tyre Size | 29" | 29" | 29" | 29" | 29" |
All measurements are in mm unless otherwise stated.
The above table shows the standard geometry for the bicycle as shipped, other geometry configurations may be available with certain bikes. Please contact us via Live Chat to find out more.
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